Re: [PATCHv6] Fix range end handling of inlined subroutines

Bernd Edlinger
2020-04-06T19:34:30Z

On 4/6/20 7:35 PM, Andrew Burgess wrote:
> * Bernd Edlinger <bernd.edlinger@hotmail.de> [2020-04-05 04:28:54 +0200]:
>
>> Hi,
>>
>> this is it, what might fix Luis aarch64 tests hopefully, please confirm.
>>
>> It still misses a good test case, though.
>>
>> I attached both the fixed version of my inline end patch,
>> and a diff of the test results:
>>
>> + is results with 3349112e380712432d5818154d67ab4660af056f.
>> - is results with this patch applied to above version.
>>
>> I often have a hard time to tell which is a regression and which is
>> just because of transient errors, where test cases are not stable.
>>
>> I hope this also helps with the Problem that Andrew is tackling
>> in the other patch, since I keep at least some line-entries as is-stmt
>> which were previously just deleted, or converted to non-is-stmt,
>> that is what makes the issue from the patch description.
>>
>> This changes only line table entries that are at the same PC as
>> an end of inline function block. Exactly that is the information
>> that is missing in the DWARF format, therefore it is not possible
>> to just fix gcc IMHO, we must fix the DWARF format, thus create
>> a new version, implement that in gcc and in gdb, that should tell
>> us what to do with the line entries at these special places.
>>
>> Andrew, could you try this, if this patch fixes your problem,
>> or at least does not make it harder to fix?
>>
>>
>> Thanks
>> Bernd.
>
>> From 8d7b78a97daea5da74211a633f9e01bc9715d649 Mon Sep 17 00:00:00 2001
>> From: Bernd Edlinger <bernd.edlinger@hotmail.de>
>> Date: Sun, 9 Feb 2020 21:13:17 +0100
>> Subject: [PATCH] Fix range end handling of inlined subroutines
>>
>> Since the is_stmt is now handled, it becomes
>> possible to locate dubious is_stmt line entries
>> at the end of an inlined function, even if the
>> called inline function is in the same subfile.
>>
>> When there is a sequence of line entries at the
>> same address where an inline range ends, and the
>> last item has is_stmt = 0, we force all previous
>> items to have is_stmt = 0 as well.
>>
>> If the last line at that address has is_stmt = 1,
>> there is no need to change anything, since a step
>> over will always stop at that last line from the
>> same address, which is fine, since it is outside
>> the subroutine.
>>
>> With this change we lose the ability to set
>> breakpoints on some lines using file:line syntax,
>> but the data is not completely lost, as the
>> line table is still holding those lines, just
>> with the is_stmt flag reset.
>>
>> This is necessary as breakpoints on these lines
>> are problematic, as the call stack is often
>> wrong. From the block info they appear to be
>> located in the caller, but they are actually meant
>> to be part of the subroutine, therefore usually one
>> frame is missing from the callstack when the
>> execution stops there.
>>
>> This is about the best we can do at the moment,
>> unless location view information are added to the
>> block ranges debug info structure, and location
>> views are implemented in gdb in general.
>>
>> This restores the previous behavior of
>> record_line that deletes lines at the end of
>> a function.
>>
>> gdb:
>> 2020-04-05 Bernd Edlinger <bernd.edlinger@hotmail.de>
>>
>> * buildsym.c (buildsym_compunit::record_line): Delete
>> previous lines at the same PC as the end sequence marker,
>> but don't do that for a fake end sequence marker.
>> (buildsym_compunit::record_inline_range_end,
>> patch_inline_end_pos): New helper functions.
>> (buildsym_compunit::end_symtab_with_blockvector): Patch line table.
>> (buildsym_compunit::~buildsym_compunit): Cleanup m_inline_end_vector.
>> * buildsym.h (buildsym_compunit::record_inline_range_end): Declare.
>> (buildsym_compunit::m_inline_end_vector,
>> buildsym_compunit::m_inline_end_vector_length,
>> buildsym_compunit::m_inline_end_vector_nitems): New data items.
>> * dwarf2/read.c (dwarf2_rnglists_process,
>> dwarf2_ranges_process): Don't ignore empty ranges here.
>> (dwarf2_ranges_read): Ignore empty ranges here.
>> (dwarf2_record_block_ranges): Pass end of range PC to
>> record_inline_range_end for inline functions.
>> (dwarf_finish_line): Add new parameter end_sequence.
>> (lnp_state_machine::record_line): Pass end_sequence to
>> dwarf_finish_line.
>
> The objections I raised in:
>
> https://sourceware.org/pipermail/gdb-patches/2020-April/167372.html
>

Andrew, I have not asked for objections ;)
I wanted to know if this fixes the line table issue
which your patch was trying to solve in a way
that I would raise objections for.

So the question is: does it fix something for you or does it
make it worse?
I ask because I do not know, and I think the question deserves
an answer.

> I think mostly apply to this revision too. So this is still not
> approved.
>
> The primary objection is (miss-)treatment of range endings and empty
> ranges. You've expressed your position in other mail, so I wont try
> to repeat you for fear of straw-manning your position. But for me any
> solution would need to acknowledge that this is a work around for bugs
> in the DWARF generated by specific versions of GCC, and weren't
> present in much older versions of GCC, and might not be present in
> newer versions of GCC, nor might these bugs be present in other
> producers of DWARF.
>

You should not underestimate, how difficult fixing the empty range thing
in gcc can be. Also the range endings can be difficult, gcc does not
know the view number, that is magic of the assembler.

The only way I see how gcc can fix it is by disabling -gstatement-frontiers.
Everyhing else will be way too painful, I tried it and got a bloody nose
from that :-)

Then we can also revert all of the is-stmt patches completely.

But I believe our current debug-exerience did improve, there are a few
things where it might regress, but most if not all of them are fixable.

> In better news, I think my objection related to the lack of use of
> std::vector would be easy enough to work around. This patch should
> absolutely use std::vector, but a later patch can introduce
> gdb::vector.
>
> For those compilers where the performance of std::vector is good
> enough, we make gdb::vector an alias for std::vector. For those
> compiler where you are aware of a performance problem with
> std::vector, then make gdb::vector a completely new, API compatible
> implementation of std::vector. Heck, GCC code is copyright assigned
> to FSF, so if GCC's std::vector is good enough you could just copy the
> implementation from there.
>

Probably, I did not even consider anything like that.
I am not really familiar with that part of the gcc code base either.
Fact is I don't like it (C++), please don't ask me for something I
don't like to do. Just do it yourself, I do not mind if you change
that part to be how you like it the most.

Thanks
Bernd.

> Thanks,
> Andrew
>
>
>
>
>
>>
>> gdb/testsuite:
>> 2020-04-05 Bernd Edlinger <bernd.edlinger@hotmail.de>
>>
>> * gdb.cp/step-and-next-inline.exp: Adjust test.
>> ---
>> gdb/buildsym.c | 124 ++++++++++++++++++++++----
>> gdb/buildsym.h | 11 +++
>> gdb/dwarf2/read.c | 30 ++++---
>> gdb/testsuite/gdb.cp/step-and-next-inline.exp | 17 ----
>> 4 files changed, 135 insertions(+), 47 deletions(-)
>>
>> diff --git a/gdb/buildsym.c b/gdb/buildsym.c
>> index fe07103..8c67e58 100644
>> --- a/gdb/buildsym.c
>> +++ b/gdb/buildsym.c
>> @@ -113,6 +113,8 @@ struct pending_block
>> next1 = next->next;
>> xfree ((void *) next);
>> }
>> +
>> + xfree (m_inline_end_vector);
>> }
>>
>> struct macro_table *
>> @@ -691,30 +693,28 @@ struct blockvector *
>> * sizeof (struct linetable_entry))));
>> }
>>
>> - /* The end of sequence marker is special. We need to reset the
>> - is_stmt flag on previous lines at the same PC, otherwise these
>> - lines may cause problems since they might be at the same address
>> - as the following function. For instance suppose a function calls
>> - abort there is no reason to emit a ret after that point (no joke).
>> + /* The end of sequence marker is special. We need to delete any
>> + previous lines at the same PC, otherwise these lines may cause
>> + problems since they might be at the same address as the following
>> + function. For instance suppose a function calls abort there is no
>> + reason to emit a ret after that point (no joke).
>> So the label may be at the same address where the following
>> - function begins. A similar problem appears if a label is at the
>> - same address where an inline function ends we cannot reliably tell
>> - if this is considered part of the inline function or the calling
>> - program or even the next inline function, so stack traces may
>> - give surprising results. Expect gdb.cp/step-and-next-inline.exp
>> - to fail if these lines are not modified here. */
>> - if (line == 0 && subfile->line_vector->nitems > 0)
>> + function begins. There is also a fake end of sequence marker (-1)
>> + that we emit internally when switching between different CUs
>> + In this case, duplicate line table entries shall not be deleted.
>> + But the line table entry looks the same in both cases. */
>> + if (line == 0)
>> {
>> - e = subfile->line_vector->item + subfile->line_vector->nitems;
>> - do
>> + while (subfile->line_vector->nitems > 0)
>> {
>> - e--;
>> - if (e->pc != pc || e->line == 0)
>> + e = subfile->line_vector->item + subfile->line_vector->nitems - 1;
>> + if (e->pc != pc)
>> break;
>> - e->is_stmt = 0;
>> + subfile->line_vector->nitems--;
>> }
>> - while (e > subfile->line_vector->item);
>> }
>> + else if (line == -1)
>> + line = 0;
>>
>> e = subfile->line_vector->item + subfile->line_vector->nitems++;
>> e->line = line;
>> @@ -723,6 +723,90 @@ struct blockvector *
>> }
>>
>> \f
>> +/* Record a PC where a inlined subroutine ends. */
>> +
>> +void
>> +buildsym_compunit::record_inline_range_end (CORE_ADDR end)
>> +{
>> + /* The performance of this function is very important,
>> + it shall be O(n*log(n)) therefore we do not use std::vector
>> + here since some compilers, e.g. visual studio, do not
>> + guarantee that for vector::push_back. */
>> + if (m_inline_end_vector == nullptr)
>> + {
>> + m_inline_end_vector_length = INITIAL_LINE_VECTOR_LENGTH;
>> + m_inline_end_vector = (CORE_ADDR *)
>> + xmalloc (sizeof (CORE_ADDR) * m_inline_end_vector_length);
>> + m_inline_end_vector_nitems = 0;
>> + }
>> + else if (m_inline_end_vector_nitems == m_inline_end_vector_length)
>> + {
>> + m_inline_end_vector_length *= 2;
>> + m_inline_end_vector = (CORE_ADDR *)
>> + xrealloc ((char *) m_inline_end_vector,
>> + sizeof (CORE_ADDR) * m_inline_end_vector_length);
>> + }
>> +
>> + m_inline_end_vector[m_inline_end_vector_nitems++] = end;
>> +}
>> +
>> +\f
>> +/* Patch the is_stmt bits at the given inline end address.
>> + The line table has to be already sorted. */
>> +
>> +static void
>> +patch_inline_end_pos (struct linetable *table, CORE_ADDR end)
>> +{
>> + int a = 2, b = table->nitems - 1;
>> + struct linetable_entry *items = table->item;
>> +
>> + /* We need at least two items with pc = end in the table.
>> + The lowest usable items are at pos 0 and 1, the highest
>> + usable items are at pos b - 2 and b - 1. */
>> + if (a > b || end < items[1].pc || end > items[b - 2].pc)
>> + return;
>> +
>> + /* Look for the first item with pc > end in the range [a,b].
>> + The previous element has pc = end or there is no match.
>> + We set a = 2, since we need at least two consecutive elements
>> + with pc = end to do anything useful.
>> + We set b = nitems - 1, since we are not interested in the last
>> + element which should be an end of sequence marker with line = 0
>> + and is_stmt = 1. */
>> + while (a < b)
>> + {
>> + int c = (a + b) / 2;
>> +
>> + if (end < items[c].pc)
>> + b = c;
>> + else
>> + a = c + 1;
>> + }
>> +
>> + a--;
>> + if (items[a].pc != end || items[a].is_stmt)
>> + return;
>> +
>> + /* When there is a sequence of line entries at the same address
>> + where an inline range ends, and the last item has is_stmt = 0,
>> + we force all previous items to have is_stmt = 0 as well.
>> + Setting breakpoints at those addresses is currently not
>> + supported, since it is unclear if the previous addresses are
>> + part of the subroutine or the calling program. */
>> + do
>> + {
>> + /* We stop at the first line entry with a different address,
>> + or when we see an end of sequence marker. */
>> + a--;
>> + if (items[a].pc != end || items[a].line == 0)
>> + break;
>> +
>> + items[a].is_stmt = 0;
>> + }
>> + while (a > 0);
>> +}
>> +
>> +\f
>> /* Subroutine of end_symtab to simplify it. Look for a subfile that
>> matches the main source file's basename. If there is only one, and
>> if the main source file doesn't have any symbol or line number
>> @@ -956,6 +1040,10 @@ struct compunit_symtab *
>> subfile->line_vector->item
>> + subfile->line_vector->nitems,
>> lte_is_less_than);
>> +
>> + for (int i = 0; i < m_inline_end_vector_nitems; i++)
>> + patch_inline_end_pos (subfile->line_vector,
>> + m_inline_end_vector[i]);
>> }
>>
>> /* Allocate a symbol table if necessary. */
>> diff --git a/gdb/buildsym.h b/gdb/buildsym.h
>> index c768a4c..2845789 100644
>> --- a/gdb/buildsym.h
>> +++ b/gdb/buildsym.h
>> @@ -190,6 +190,8 @@ struct buildsym_compunit
>> void record_line (struct subfile *subfile, int line, CORE_ADDR pc,
>> bool is_stmt);
>>
>> + void record_inline_range_end (CORE_ADDR end);
>> +
>> struct compunit_symtab *get_compunit_symtab ()
>> {
>> return m_compunit_symtab;
>> @@ -397,6 +399,15 @@ struct buildsym_compunit
>>
>> /* Pending symbols that are local to the lexical context. */
>> struct pending *m_local_symbols = nullptr;
>> +
>> + /* Pending inline end range addresses. */
>> + CORE_ADDR * m_inline_end_vector = nullptr;
>> +
>> + /* Number of allocated inline end range addresses. */
>> + int m_inline_end_vector_length = 0;
>> +
>> + /* Number of pending inline end range addresses. */
>> + int m_inline_end_vector_nitems = 0;
>> };
>>
>> \f
>> diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
>> index bcc3116..aa32726 100644
>> --- a/gdb/dwarf2/read.c
>> +++ b/gdb/dwarf2/read.c
>> @@ -13527,10 +13527,6 @@ class process_die_scope
>> return false;
>> }
>>
>> - /* Empty range entries have no effect. */
>> - if (range_beginning == range_end)
>> - continue;
>> -
>> range_beginning += *base;
>> range_end += *base;
>>
>> @@ -13638,10 +13634,6 @@ class process_die_scope
>> return 0;
>> }
>>
>> - /* Empty range entries have no effect. */
>> - if (range_beginning == range_end)
>> - continue;
>> -
>> range_beginning += *base;
>> range_end += *base;
>>
>> @@ -13681,6 +13673,10 @@ class process_die_scope
>> retval = dwarf2_ranges_process (offset, cu,
>> [&] (CORE_ADDR range_beginning, CORE_ADDR range_end)
>> {
>> + /* Empty range entries have no effect. */
>> + if (range_beginning == range_end)
>> + return;
>> +
>> if (ranges_pst != NULL)
>> {
>> CORE_ADDR lowpc;
>> @@ -13918,6 +13914,7 @@ class process_die_scope
>> struct gdbarch *gdbarch = get_objfile_arch (objfile);
>> struct attribute *attr;
>> struct attribute *attr_high;
>> + bool inlined_subroutine = (die->tag == DW_TAG_inlined_subroutine);
>>
>> attr_high = dwarf2_attr (die, DW_AT_high_pc, cu);
>> if (attr_high)
>> @@ -13933,7 +13930,10 @@ class process_die_scope
>>
>> low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr);
>> high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr);
>> - cu->get_builder ()->record_block_range (block, low, high - 1);
>> + if (inlined_subroutine)
>> + cu->get_builder ()->record_inline_range_end (high);
>> + if (low < high)
>> + cu->get_builder ()->record_block_range (block, low, high - 1);
>> }
>> }
>>
>> @@ -13958,6 +13958,10 @@ class process_die_scope
>> end += baseaddr;
>> start = gdbarch_adjust_dwarf2_addr (gdbarch, start);
>> end = gdbarch_adjust_dwarf2_addr (gdbarch, end);
>> + if (inlined_subroutine)
>> + cu->get_builder ()->record_inline_range_end (end);
>> + if (start == end)
>> + return;
>> cu->get_builder ()->record_block_range (block, start, end - 1);
>> blockvec.emplace_back (start, end);
>> });
>> @@ -19479,7 +19483,7 @@ class lnp_state_machine
>>
>> static void
>> dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile,
>> - CORE_ADDR address, struct dwarf2_cu *cu)
>> + CORE_ADDR address, struct dwarf2_cu *cu, bool end_sequence)
>> {
>> if (subfile == NULL)
>> return;
>> @@ -19492,7 +19496,8 @@ class lnp_state_machine
>> paddress (gdbarch, address));
>> }
>>
>> - dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu);
>> + dwarf_record_line_1 (gdbarch, subfile, end_sequence ? 0 : -1, address,
>> + true, cu);
>> }
>>
>> void
>> @@ -19525,7 +19530,8 @@ class lnp_state_machine
>> || end_sequence)
>> {
>> dwarf_finish_line (m_gdbarch, m_last_subfile, m_address,
>> - m_currently_recording_lines ? m_cu : nullptr);
>> + m_currently_recording_lines ? m_cu : nullptr,
>> + end_sequence);
>> }
>>
>> if (!end_sequence)
>> diff --git a/gdb/testsuite/gdb.cp/step-and-next-inline.exp b/gdb/testsuite/gdb.cp/step-and-next-inline.exp
>> index 3733fa7..e3a5793 100644
>> --- a/gdb/testsuite/gdb.cp/step-and-next-inline.exp
>> +++ b/gdb/testsuite/gdb.cp/step-and-next-inline.exp
>> @@ -52,37 +52,20 @@ proc do_test { use_header } {
>> gdb_test "step" ".*" "step into get_alias_set"
>> gdb_test "bt" "\\s*\\#0\\s+get_alias_set\[^\r\]*${srcfile}:.*" \
>> "not in inline 1"
>> - # It's possible that this first failure (when not using a header
>> - # file) is GCC's fault, though the remaining failures would best
>> - # be fixed by adding location views support (though it could be
>> - # that some easier heuristic could be figured out). Still, it is
>> - # not certain that the first failure wouldn't also be fixed by
>> - # having location view support, so for now it is tagged as such.
>> - if {!$use_header} { setup_kfail "*-*-*" symtab/25507 }
>> gdb_test "next" ".*TREE_TYPE.*" "next step 1"
>> gdb_test "bt" "\\s*\\#0\\s+get_alias_set\[^\r\]*${srcfile}:.*" \
>> "not in inline 2"
>> gdb_test "next" ".*TREE_TYPE.*" "next step 2"
>> gdb_test "bt" "\\s*\\#0\\s+get_alias_set\[^\r\]*${srcfile}:.*" \
>> "not in inline 3"
>> - if {!$use_header} { setup_kfail "*-*-*" symtab/25507 }
>> gdb_test "next" ".*TREE_TYPE.*" "next step 3"
>> gdb_test "bt" "\\s*\\#0\\s+get_alias_set\[^\r\]*${srcfile}:.*" \
>> "not in inline 4"
>> - if {!$use_header} { setup_kfail "*-*-*" symtab/25507 }
>> gdb_test "next" "return 0.*" "next step 4"
>> gdb_test "bt" \
>> "\\s*\\#0\\s+(main|get_alias_set)\[^\r\]*${srcfile}:.*" \
>> "not in inline 5"
>>
>> - if {!$use_header} {
>> - # With the debug from GCC 10.x (and earlier) GDB is currently
>> - # unable to successfully complete the following tests when we
>> - # are not using a header file.
>> - kfail symtab/25507 "stepping tests"
>> - return
>> - }
>> -
>> clean_restart ${executable}
>>
>> if ![runto_main] {
>> --
>> 1.9.1
>>
>
>> --- /dev/fd/63 2020-04-05 04:14:05.929697173 +0200
>> +++ /dev/fd/62 2020-04-05 04:14:05.929697173 +0200
>> @@ -1,4 +1,4 @@
>> -Test Run By ed on Sun Apr 5 03:07:53 2020
>> +Test Run By ed on Sun Apr 5 03:45:11 2020
>> Native configuration is x86_64-pc-linux-gnu
>>
>> === gdb tests ===
>> @@ -42091,7 +42091,7 @@
>> PASS: gdb.btrace/multi-thread-step.exp: schedlock-on: cont: thread 1
>> PASS: gdb.btrace/multi-thread-step.exp: schedlock-on: cont: thread 1: continue
>> FAIL: gdb.btrace/multi-thread-step.exp: schedlock-on: cont: thread 1: thread 1 not replaying
>> -PASS: gdb.btrace/multi-thread-step.exp: schedlock-on: cont: thread 1: thread apply 2 info record
>> +FAIL: gdb.btrace/multi-thread-step.exp: schedlock-on: cont: thread 1: thread apply 2 info record
>> PASS: gdb.btrace/multi-thread-step.exp: schedlock-on: cont: thread 2
>> PASS: gdb.btrace/multi-thread-step.exp: schedlock-on: cont: thread 2: continue
>> FAIL: gdb.btrace/multi-thread-step.exp: schedlock-on: cont: thread 2: thread 1 not replaying
>> @@ -42132,7 +42132,7 @@
>> PASS: gdb.btrace/multi-thread-step.exp: schedlock-replay: cont: thread 2
>> PASS: gdb.btrace/multi-thread-step.exp: schedlock-replay: cont: thread 2: continue
>> FAIL: gdb.btrace/multi-thread-step.exp: schedlock-replay: cont: thread 2: thread 1 not replaying
>> -PASS: gdb.btrace/multi-thread-step.exp: schedlock-replay: cont: thread 2: thread 2 not replaying
>> +FAIL: gdb.btrace/multi-thread-step.exp: schedlock-replay: cont: thread 2: thread 2 not replaying
>> PASS: gdb.btrace/multi-thread-step.exp: schedlock-replay: goto-end: thread 1 not replaying
>> PASS: gdb.btrace/multi-thread-step.exp: schedlock-replay: goto-end: thread 2 not replaying
>> PASS: gdb.btrace/multi-thread-step.exp: schedlock-replay: goto-end: thread apply all record goto end
>> @@ -42432,78 +42432,77 @@
>> PASS: gdb.btrace/vdso.exp: replay: info record
>> PASS: gdb.btrace/vdso.exp: replay: record goto begin
>> PASS: gdb.btrace/vdso.exp: stepi
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile code (*a.s.ptr != 'h')
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: compile code (*a.s.ptr != 'h')
>> KFAIL: gdb.compile/compile-cplus-anonymous.exp: compile code (*anon_s.ptr == 'a') (PRMS: compile/23588)
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile code A::BB
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile code ABC
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile code DEF
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile code GHI
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: compile code A::BB
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: compile code ABC
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: compile code DEF
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: compile code GHI
>> PASS: gdb.compile/compile-cplus-anonymous.exp: compile code JKL
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile code a.e
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile code a.s.len
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile code a.u.b (timeout)
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: compile code a.e
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: compile code a.s.len
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: compile code a.u.b
>> FAIL: gdb.compile/compile-cplus-anonymous.exp: compile code anon_e
>> KFAIL: gdb.compile/compile-cplus-anonymous.exp: compile code anon_s.MAGIC (PRMS: compile/23588)
>> KFAIL: gdb.compile/compile-cplus-anonymous.exp: compile code anon_s.len (PRMS: compile/23588)
>> KFAIL: gdb.compile/compile-cplus-anonymous.exp: compile code anon_s.ua (PRMS: compile/23588)
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile code anon_u.aa (timeout)
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile print (*a.s.ptr != 'h')
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: compile code anon_u.aa
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: compile print (*a.s.ptr != 'h')
>> KFAIL: gdb.compile/compile-cplus-anonymous.exp: compile print (*anon_s.ptr == 'a') (PRMS: compile/23588)
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile print A::BB
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: compile print A::BB
>> PASS: gdb.compile/compile-cplus-anonymous.exp: compile print ABC
>> PASS: gdb.compile/compile-cplus-anonymous.exp: compile print DEF
>> PASS: gdb.compile/compile-cplus-anonymous.exp: compile print GHI
>> PASS: gdb.compile/compile-cplus-anonymous.exp: compile print JKL
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile print a.e
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile print a.s.len
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile print a.u.b
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile print anon_e (timeout)
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: compile print a.e
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: compile print a.s.len
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: compile print a.u.b
>> +FAIL: gdb.compile/compile-cplus-anonymous.exp: compile print anon_e
>> KFAIL: gdb.compile/compile-cplus-anonymous.exp: compile print anon_s.MAGIC (PRMS: compile/23588)
>> KFAIL: gdb.compile/compile-cplus-anonymous.exp: compile print anon_s.len (PRMS: compile/23588)
>> KFAIL: gdb.compile/compile-cplus-anonymous.exp: compile print anon_s.ua (PRMS: compile/23588)
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: compile print anon_u.aa (timeout)
>> +FAIL: gdb.compile/compile-cplus-anonymous.exp: compile print anon_u.aa
>> PASS: gdb.compile/compile-cplus-anonymous.exp: continue to breakpoint: testing location
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: result of compile code (*a.s.ptr != 'h')
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: result of compile code (*a.s.ptr != 'h')
>> KFAIL: gdb.compile/compile-cplus-anonymous.exp: result of compile code (*anon_s.ptr == 'a') (PRMS: compile/23588)
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: result of compile code A::BB
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: result of compile code ABC
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: result of compile code A::BB
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: result of compile code ABC
>> PASS: gdb.compile/compile-cplus-anonymous.exp: result of compile code DEF
>> PASS: gdb.compile/compile-cplus-anonymous.exp: result of compile code GHI
>> PASS: gdb.compile/compile-cplus-anonymous.exp: result of compile code JKL
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: result of compile code a.e
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: result of compile code a.s.len
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: result of compile code a.u.b
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: result of compile code a.e
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: result of compile code a.s.len
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: result of compile code a.u.b
>> FAIL: gdb.compile/compile-cplus-anonymous.exp: result of compile code anon_e
>> KFAIL: gdb.compile/compile-cplus-anonymous.exp: result of compile code anon_s.MAGIC (PRMS: compile/23588)
>> KFAIL: gdb.compile/compile-cplus-anonymous.exp: result of compile code anon_s.len (PRMS: compile/23588)
>> KFAIL: gdb.compile/compile-cplus-anonymous.exp: result of compile code anon_s.ua (PRMS: compile/23588)
>> -FAIL: gdb.compile/compile-cplus-anonymous.exp: result of compile code anon_u.aa (timeout)
>> +PASS: gdb.compile/compile-cplus-anonymous.exp: result of compile code anon_u.aa
>> PASS: gdb.compile/compile-cplus-array-decay.exp: compile print integers
>> PASS: gdb.compile/compile-cplus-array-decay.exp: compile print strings
>> PASS: gdb.compile/compile-cplus-array-decay.exp: continue to breakpoint: testing location
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: check for working compile command (timeout)
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: compile code d.A::do_it (1) (timeout)
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: compile code d.B::do_it (1)
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: compile code d.C::do_it (1)
>> +PASS: gdb.compile/compile-cplus-inherit.exp: compile code d.A::do_it (1)
>> +PASS: gdb.compile/compile-cplus-inherit.exp: compile code d.B::do_it (1)
>> +PASS: gdb.compile/compile-cplus-inherit.exp: compile code d.C::do_it (1)
>> PASS: gdb.compile/compile-cplus-inherit.exp: compile code d.a_
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: compile code d.b_ (timeout)
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: compile code d.c_ (timeout)
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: compile code d.d_ (timeout)
>> +PASS: gdb.compile/compile-cplus-inherit.exp: compile code d.b_
>> +PASS: gdb.compile/compile-cplus-inherit.exp: compile code d.c_
>> +PASS: gdb.compile/compile-cplus-inherit.exp: compile code d.d_
>> FAIL: gdb.compile/compile-cplus-inherit.exp: compile print d.A::do_it (1)
>> FAIL: gdb.compile/compile-cplus-inherit.exp: compile print d.B::do_it (1)
>> FAIL: gdb.compile/compile-cplus-inherit.exp: compile print d.C::do_it (1)
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: compile print d.a_ (timeout)
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: compile print d.b_ (timeout)
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: compile print d.c_ (timeout)
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: compile print d.d_ (timeout)
>> +FAIL: gdb.compile/compile-cplus-inherit.exp: compile print d.a_
>> +FAIL: gdb.compile/compile-cplus-inherit.exp: compile print d.b_
>> +FAIL: gdb.compile/compile-cplus-inherit.exp: compile print d.c_
>> +FAIL: gdb.compile/compile-cplus-inherit.exp: compile print d.d_
>> PASS: gdb.compile/compile-cplus-inherit.exp: continue to breakpoint: testing location
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: result of compile code d.A::do_it (1)
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: result of compile code d.B::do_it (1)
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: result of compile code d.C::do_it (1)
>> +PASS: gdb.compile/compile-cplus-inherit.exp: result of compile code d.A::do_it (1)
>> +PASS: gdb.compile/compile-cplus-inherit.exp: result of compile code d.B::do_it (1)
>> +PASS: gdb.compile/compile-cplus-inherit.exp: result of compile code d.C::do_it (1)
>> PASS: gdb.compile/compile-cplus-inherit.exp: result of compile code d.a_
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: result of compile code d.b_ (timeout)
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: result of compile code d.c_ (timeout)
>> -FAIL: gdb.compile/compile-cplus-inherit.exp: result of compile code d.d_ (timeout)
>> +PASS: gdb.compile/compile-cplus-inherit.exp: result of compile code d.b_
>> +PASS: gdb.compile/compile-cplus-inherit.exp: result of compile code d.c_
>> +PASS: gdb.compile/compile-cplus-inherit.exp: result of compile code d.d_
>> FAIL: gdb.compile/compile-cplus-member.exp: compile code A::ATYPE i = 10; var = i;
>> FAIL: gdb.compile/compile-cplus-member.exp: compile code A::s_private_
>> FAIL: gdb.compile/compile-cplus-member.exp: compile code A::s_private_ = E_B; var = A::s_private_;
>> @@ -42624,21 +42623,21 @@
>> PASS: gdb.compile/compile-cplus-namespace.exp: result of compile code N1::N2::N3::N4::n4static
>> PASS: gdb.compile/compile-cplus-namespace.exp: result of compile code s4.get_var ()
>> PASS: gdb.compile/compile-cplus-namespace.exp: result of compile code s4.s4int_
>> -FAIL: gdb.compile/compile-cplus-nested.exp: compile code A::Inner1 &r1 = i1; var = r1.a_; (timeout)
>> -FAIL: gdb.compile/compile-cplus-nested.exp: compile code A::Inner1 *i1p = &i1; var = i1p->a_; (timeout)
>> +FAIL: gdb.compile/compile-cplus-nested.exp: compile code A::Inner1 &r1 = i1; var = r1.a_;
>> +FAIL: gdb.compile/compile-cplus-nested.exp: compile code A::Inner1 *i1p = &i1; var = i1p->a_;
>> FAIL: gdb.compile/compile-cplus-nested.exp: compile code A::Inner1::Inner2 &r2 = i2; var = r2.a_;
>> -FAIL: gdb.compile/compile-cplus-nested.exp: compile code A::Inner1::Inner2 *i2p = &i2; var = i2p->a_; (timeout)
>> -FAIL: gdb.compile/compile-cplus-nested.exp: compile code i1.a_ (timeout)
>> -FAIL: gdb.compile/compile-cplus-nested.exp: compile code i2.a_ (timeout)
>> -FAIL: gdb.compile/compile-cplus-nested.exp: compile print i1.a_ (timeout)
>> -FAIL: gdb.compile/compile-cplus-nested.exp: compile print i2.a_ (timeout)
>> +FAIL: gdb.compile/compile-cplus-nested.exp: compile code A::Inner1::Inner2 *i2p = &i2; var = i2p->a_;
>> +FAIL: gdb.compile/compile-cplus-nested.exp: compile code i1.a_
>> +FAIL: gdb.compile/compile-cplus-nested.exp: compile code i2.a_
>> +FAIL: gdb.compile/compile-cplus-nested.exp: compile print i1.a_
>> +FAIL: gdb.compile/compile-cplus-nested.exp: compile print i2.a_
>> PASS: gdb.compile/compile-cplus-nested.exp: continue to breakpoint: testing location
>> FAIL: gdb.compile/compile-cplus-nested.exp: result of compile code A::Inner1 &r1 = i1; var = r1.a_;
>> -FAIL: gdb.compile/compile-cplus-nested.exp: result of compile code A::Inner1 *i1p = &i1; var = i1p->a_; (timeout)
>> +FAIL: gdb.compile/compile-cplus-nested.exp: result of compile code A::Inner1 *i1p = &i1; var = i1p->a_;
>> FAIL: gdb.compile/compile-cplus-nested.exp: result of compile code A::Inner1::Inner2 &r2 = i2; var = r2.a_;
>> -FAIL: gdb.compile/compile-cplus-nested.exp: result of compile code A::Inner1::Inner2 *i2p = &i2; var = i2p->a_; (timeout)
>> -FAIL: gdb.compile/compile-cplus-nested.exp: result of compile code i1.a_ (timeout)
>> -FAIL: gdb.compile/compile-cplus-nested.exp: result of compile code i2.a_ (timeout)
>> +FAIL: gdb.compile/compile-cplus-nested.exp: result of compile code A::Inner1::Inner2 *i2p = &i2; var = i2p->a_;
>> +FAIL: gdb.compile/compile-cplus-nested.exp: result of compile code i1.a_
>> +FAIL: gdb.compile/compile-cplus-nested.exp: result of compile code i2.a_
>> PASS: gdb.compile/compile-cplus-print.exp: Set language to C++
>> KFAIL: gdb.compile/compile-cplus-print.exp: compile print *vararray@3 (PRMS: compile/23587)
>> KFAIL: gdb.compile/compile-cplus-print.exp: compile print *vararrayp@3 (PRMS: compile/23587)
>> @@ -49883,34 +49882,18 @@
>> PASS: gdb.cp/static-print-quit.exp: set pagination off
>> PASS: gdb.cp/static-print-quit.exp: set width 80
>> PASS: gdb.cp/static-typedef-print.exp: print static member
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: in get_alias_set pass 2
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: in inline 1 pass 2
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: in inline 2 pass 2
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: in inline 3 pass 2
>> PASS: gdb.cp/step-and-next-inline.exp: no_header: in main
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: in main pass 2
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: next step 1
>> +KFAIL: gdb.cp/step-and-next-inline.exp: no_header: next step 1 (PRMS: symtab/25507)
>> PASS: gdb.cp/step-and-next-inline.exp: no_header: next step 2
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: next step 3
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: next step 4
>> +KFAIL: gdb.cp/step-and-next-inline.exp: no_header: next step 3 (PRMS: symtab/25507)
>> +KFAIL: gdb.cp/step-and-next-inline.exp: no_header: next step 4 (PRMS: symtab/25507)
>> PASS: gdb.cp/step-and-next-inline.exp: no_header: not in inline 1
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: not in inline 1 pass 2
>> PASS: gdb.cp/step-and-next-inline.exp: no_header: not in inline 2
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: not in inline 2 pass 2
>> PASS: gdb.cp/step-and-next-inline.exp: no_header: not in inline 3
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: not in inline 3 pass 2
>> PASS: gdb.cp/step-and-next-inline.exp: no_header: not in inline 4
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: not in inline 4 pass 2
>> PASS: gdb.cp/step-and-next-inline.exp: no_header: not in inline 5
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: step 1
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: step 2
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: step 3
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: step 4
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: step 5
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: step 6
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: step 7
>> PASS: gdb.cp/step-and-next-inline.exp: no_header: step into get_alias_set
>> -PASS: gdb.cp/step-and-next-inline.exp: no_header: step into get_alias_set pass 2
>> +KFAIL: gdb.cp/step-and-next-inline.exp: no_header: stepping tests (PRMS: symtab/25507)
>> PASS: gdb.cp/step-and-next-inline.exp: use_header: in get_alias_set pass 2
>> PASS: gdb.cp/step-and-next-inline.exp: use_header: in inline 1 pass 2
>> PASS: gdb.cp/step-and-next-inline.exp: use_header: in inline 2 pass 2
>> @@ -66161,7 +66144,7 @@
>> PASS: gdb.multi/multi-term-settings.exp: inf1_how=attach: inf2_how=attach: info inferiors
>> PASS: gdb.multi/multi-term-settings.exp: inf1_how=attach: inf2_how=attach: info threads
>> PASS: gdb.multi/multi-term-settings.exp: inf1_how=attach: inf2_how=attach: set schedule-multiple on
>> -FAIL: gdb.multi/multi-term-settings.exp: inf1_how=attach: inf2_how=attach: stop with control-c (SIGINT)
>> +FAIL: gdb.multi/multi-term-settings.exp: inf1_how=attach: inf2_how=attach: stop with control-c (SIGINT) (the program is no longer running)
>> PASS: gdb.multi/multi-term-settings.exp: inf1_how=attach: inf2_how=attach: switch to inferior 2
>> PASS: gdb.multi/multi-term-settings.exp: inf1_how=attach: inf2_how=run: add empty inferior 2
>> PASS: gdb.multi/multi-term-settings.exp: inf1_how=attach: inf2_how=run: attach
>> @@ -66175,7 +66158,7 @@
>> PASS: gdb.multi/multi-term-settings.exp: inf1_how=attach: inf2_how=tty: info inferiors
>> PASS: gdb.multi/multi-term-settings.exp: inf1_how=attach: inf2_how=tty: info threads
>> PASS: gdb.multi/multi-term-settings.exp: inf1_how=attach: inf2_how=tty: set schedule-multiple on
>> -FAIL: gdb.multi/multi-term-settings.exp: inf1_how=attach: inf2_how=tty: stop with control-c (SIGINT)
>> +PASS: gdb.multi/multi-term-settings.exp: inf1_how=attach: inf2_how=tty: stop with control-c (SIGINT)
>> PASS: gdb.multi/multi-term-settings.exp: inf1_how=attach: inf2_how=tty: switch to inferior 2
>> PASS: gdb.multi/multi-term-settings.exp: inf1_how=attach: inf2_how=tty: tty TTY
>> PASS: gdb.multi/multi-term-settings.exp: inf1_how=run: inf2_how=attach: add empty inferior 2
>> @@ -74312,7 +74295,7 @@
>> PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: no failure to remove breakpoints
>> PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: no spurious thread stop
>> PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: no threads left
>> -PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: only inferior 1 left
>> +FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: only inferior 1 left
>> PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: set detach-on-fork off
>> PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: successfully compiled posix threads test case
>> PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=on: continue &
>> @@ -75041,7 +75024,7 @@
>> PASS: gdb.threads/non-ldr-exc-4.exp: lock-sched=on,non-stop=off: set scheduler-locking on
>> PASS: gdb.threads/non-ldr-exc-4.exp: successfully compiled posix threads test case
>> PASS: gdb.threads/non-ldr-exit.exp: continue to breakpoint: break-here
>> -PASS: gdb.threads/non-ldr-exit.exp: program exits normally
>> +KFAIL: gdb.threads/non-ldr-exit.exp: program exits normally (PRMS: gdb/18717)
>> PASS: gdb.threads/non-ldr-exit.exp: set scheduler-locking on
>> PASS: gdb.threads/non-ldr-exit.exp: successfully compiled posix threads test case
>> PASS: gdb.threads/non-stop-fair-events.exp: get num_threads
>> @@ -75553,48 +75536,48 @@
>> PASS: gdb.threads/omp-par-scope.exp: multi_scope: first thread: get valueof "thread_num"
>> PASS: gdb.threads/omp-par-scope.exp: multi_scope: first thread: print file_scope_var
>> PASS: gdb.threads/omp-par-scope.exp: multi_scope: first thread: print i01
>> -PASS: gdb.threads/omp-par-scope.exp: multi_scope: first thread: print i02
>> +KFAIL: gdb.threads/omp-par-scope.exp: multi_scope: first thread: print i02 (PRMS: gdb/22214)
>> PASS: gdb.threads/omp-par-scope.exp: multi_scope: first thread: print i11
>> -PASS: gdb.threads/omp-par-scope.exp: multi_scope: first thread: print i12
>> +KFAIL: gdb.threads/omp-par-scope.exp: multi_scope: first thread: print i12 (PRMS: gdb/22214)
>> PASS: gdb.threads/omp-par-scope.exp: multi_scope: first thread: print i21
>> -PASS: gdb.threads/omp-par-scope.exp: multi_scope: first thread: print i22
>> +KFAIL: gdb.threads/omp-par-scope.exp: multi_scope: first thread: print i22 (PRMS: gdb/22214)
>> PASS: gdb.threads/omp-par-scope.exp: multi_scope: second thread: continue to breakpoint: at printf
>> PASS: gdb.threads/omp-par-scope.exp: multi_scope: second thread: get valueof "thread_num"
>> PASS: gdb.threads/omp-par-scope.exp: multi_scope: second thread: print file_scope_var
>> PASS: gdb.threads/omp-par-scope.exp: multi_scope: second thread: print i01
>> -KFAIL: gdb.threads/omp-par-scope.exp: multi_scope: second thread: print i02 (PRMS: gdb/22214)
>> +PASS: gdb.threads/omp-par-scope.exp: multi_scope: second thread: print i02
>> PASS: gdb.threads/omp-par-scope.exp: multi_scope: second thread: print i11
>> -KFAIL: gdb.threads/omp-par-scope.exp: multi_scope: second thread: print i12 (PRMS: gdb/22214)
>> +PASS: gdb.threads/omp-par-scope.exp: multi_scope: second thread: print i12
>> PASS: gdb.threads/omp-par-scope.exp: multi_scope: second thread: print i21
>> -KFAIL: gdb.threads/omp-par-scope.exp: multi_scope: second thread: print i22 (PRMS: gdb/22214)
>> +PASS: gdb.threads/omp-par-scope.exp: multi_scope: second thread: print i22
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: continue to breakpoint: at printf
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: get valueof "tn"
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: print file_scope_var
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: print i
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: print j
>> -PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: print k
>> +KFAIL: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: print k (PRMS: gdb/22214)
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: print p
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: print q
>> -PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: print r
>> +KFAIL: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: print r (PRMS: gdb/22214)
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: print s1
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: print tn
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: print x
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: print y
>> -PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: print z
>> +KFAIL: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 1st thread: print z (PRMS: gdb/22214)
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: continue to breakpoint: at printf
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: get valueof "tn"
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: print file_scope_var
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: print i
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: print j
>> -KFAIL: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: print k (PRMS: gdb/22214)
>> +PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: print k
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: print p
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: print q
>> -KFAIL: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: print r (PRMS: gdb/22214)
>> +PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: print r
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: print s1
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: print tn
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: print x
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: print y
>> -KFAIL: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: print z (PRMS: gdb/22214)
>> +PASS: gdb.threads/omp-par-scope.exp: nested_func: 1st call: 2nd thread: print z
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 2nd call: 1st thread: continue to breakpoint: at printf
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 2nd call: 1st thread: get valueof "tn"
>> PASS: gdb.threads/omp-par-scope.exp: nested_func: 2nd call: 1st thread: print file_scope_var
>> @@ -75638,8 +75621,8 @@
>> PASS: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 2nd stop: print file_scope_var
>> KFAIL: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 2nd stop: print i (PRMS: gdb/22214)
>> KFAIL: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 2nd stop: print j (PRMS: gdb/22214)
>> -PASS: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 2nd stop: print k
>> -PASS: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 2nd stop: print l
>> +XFAIL: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 2nd stop: print k
>> +XFAIL: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 2nd stop: print l
>> PASS: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 2nd stop: print num
>> PASS: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 3rd stop: continue to breakpoint: at printf
>> PASS: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 3rd stop: get valueof "inner_num"
>> @@ -75656,14 +75639,14 @@
>> PASS: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 4th stop: print file_scope_var
>> KFAIL: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 4th stop: print i (PRMS: gdb/22214)
>> KFAIL: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 4th stop: print j (PRMS: gdb/22214)
>> -XFAIL: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 4th stop: print k
>> -XFAIL: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 4th stop: print l
>> +PASS: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 4th stop: print k
>> +PASS: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 4th stop: print l
>> PASS: gdb.threads/omp-par-scope.exp: nested_parallel: inner_threads: 4th stop: print num
>> PASS: gdb.threads/omp-par-scope.exp: nested_parallel: outer_threads: outer stop: continue to breakpoint: at printf
>> PASS: gdb.threads/omp-par-scope.exp: nested_parallel: outer_threads: outer stop: get local valueof "num"
>> PASS: gdb.threads/omp-par-scope.exp: nested_parallel: outer_threads: outer stop: print file_scope_var
>> -KFAIL: gdb.threads/omp-par-scope.exp: nested_parallel: outer_threads: outer stop: print i (PRMS: gdb/22214)
>> -KFAIL: gdb.threads/omp-par-scope.exp: nested_parallel: outer_threads: outer stop: print j (PRMS: gdb/22214)
>> +PASS: gdb.threads/omp-par-scope.exp: nested_parallel: outer_threads: outer stop: print i
>> +PASS: gdb.threads/omp-par-scope.exp: nested_parallel: outer_threads: outer stop: print j
>> PASS: gdb.threads/omp-par-scope.exp: nested_parallel: outer_threads: outer stop: print k
>> PASS: gdb.threads/omp-par-scope.exp: nested_parallel: outer_threads: outer stop: print l
>> PASS: gdb.threads/omp-par-scope.exp: nested_parallel: outer_threads: outer stop: print num
>> @@ -75678,7 +75661,7 @@
>> PASS: gdb.threads/omp-par-scope.exp: single_scope: first thread: get valueof "thread_num"
>> PASS: gdb.threads/omp-par-scope.exp: single_scope: first thread: print i1
>> PASS: gdb.threads/omp-par-scope.exp: single_scope: first thread: print i2
>> -KFAIL: gdb.threads/omp-par-scope.exp: single_scope: first thread: print i3 (PRMS: gdb/22214)
>> +PASS: gdb.threads/omp-par-scope.exp: single_scope: first thread: print i3
>> PASS: gdb.threads/omp-par-scope.exp: single_scope: first thread: print s1
>> PASS: gdb.threads/omp-par-scope.exp: single_scope: first thread: print s2
>> PASS: gdb.threads/omp-par-scope.exp: single_scope: first thread: print s3
>> @@ -75686,7 +75669,7 @@
>> PASS: gdb.threads/omp-par-scope.exp: single_scope: second thread: get valueof "thread_num"
>> PASS: gdb.threads/omp-par-scope.exp: single_scope: second thread: print i1
>> PASS: gdb.threads/omp-par-scope.exp: single_scope: second thread: print i2
>> -PASS: gdb.threads/omp-par-scope.exp: single_scope: second thread: print i3
>> +KFAIL: gdb.threads/omp-par-scope.exp: single_scope: second thread: print i3 (PRMS: gdb/22214)
>> PASS: gdb.threads/omp-par-scope.exp: single_scope: second thread: print s1
>> PASS: gdb.threads/omp-par-scope.exp: single_scope: second thread: print s2
>> PASS: gdb.threads/omp-par-scope.exp: single_scope: second thread: print s3
>> @@ -75799,7 +75782,7 @@
>> PASS: gdb.threads/process-dies-while-handling-bp.exp: non_stop=off: cond_bp_target=1: probe for target remote
>> PASS: gdb.threads/process-dies-while-handling-bp.exp: non_stop=off: cond_bp_target=1: set breakpoint that evals false
>> PASS: gdb.threads/process-dies-while-handling-bp.exp: non_stop=on: cond_bp_target=0: continue &
>> -KFAIL: gdb.threads/process-dies-while-handling-bp.exp: non_stop=on: cond_bp_target=0: inferior 1 exited (memory error) (PRMS: gdb/18749)
>> +KFAIL: gdb.threads/process-dies-while-handling-bp.exp: non_stop=on: cond_bp_target=0: inferior 1 exited (prompt) (PRMS: gdb/18749)
>> PASS: gdb.threads/process-dies-while-handling-bp.exp: non_stop=on: cond_bp_target=0: probe for target remote
>> PASS: gdb.threads/process-dies-while-handling-bp.exp: non_stop=on: cond_bp_target=0: set breakpoint that evals false
>> PASS: gdb.threads/process-dies-while-handling-bp.exp: non_stop=on: cond_bp_target=1: continue &
>> @@ -77532,12 +77515,12 @@
>>
>> === gdb Summary ===
>>
>> -# of expected passes 76351
>> -# of unexpected failures 828
>> +# of expected passes 76363
>> +# of unexpected failures 796
>> # of expected failures 69
>> -# of known failures 104
>> +# of known failures 107
>> # of untested testcases 44
>> # of unresolved testcases 5
>> # of unsupported tests 118
>> -/home/ed/gnu/gdb-build-1/gdb/testsuite/../../gdb/gdb version 10.0.50.20200404-git -nw -nx -data-directory /home/ed/gnu/gdb-build-1/gdb/testsuite/../data-directory
>> +/home/ed/gnu/gdb-build-2/gdb/testsuite/../../gdb/gdb version 10.0.50.20200404-git -nw -nx -data-directory /home/ed/gnu/gdb-build-2/gdb/testsuite/../data-directory
>>
>