[committed][gdb/testsuite] Handle eof in gdb_internal_error_resync

[Tom de Vries via Gdb-patches <gdb-patches@sourceware.org>]

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[ was: Re: [PATCH][gdb/testsuite] Simplify
gdb.dwarf2/locexpr-data-member-location.exp ]

On 9/5/21 8:39 AM, Tom de Vries wrote:
> Then fix the:
> ...
> ERROR: : spawn id exp9 not open
> ...
> by handling eof in gdb_internal_error_resync.

I've fixed this in a separate patch.

Thanks,
- Tom

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[gdb/testsuite] Handle eof in gdb_internal_error_resync

Before commit 5a20fadc841 the test-case
gdb.dwarf2/locexpr-data-member-location.exp fails like this:
...
FAIL: gdb.dwarf2/locexpr-data-member-location.exp: running to bar in runto \
  (GDB internal error)
ERROR: : spawn id exp9 not open
    while executing
"expect {
-i exp9 -timeout 10
            -re "Quit this debugging session\\? \\(y or n\\) $" {
                send_gdb "n\n" answer
                incr count
            }
            -re "Create ..."
    ("uplevel" body line 1)
    invoked from within
"uplevel $body" NONE : spawn id exp9 not open
ERROR: Could not resync from internal error (timeout)
...

Fix the:
...
ERROR: : spawn id exp9 not open
...
by handling eof in gdb_internal_error_resync, such that we have instead:
...
FAIL: gdb.dwarf2/locexpr-data-member-location.exp: running to bar in runto \
  (GDB internal error)
ERROR: Could not resync from internal error (eof)
...

Tested on x86_64-linux.

---
 gdb/testsuite/lib/gdb.exp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index 00336bd588e..cdda51529fb 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -770,6 +770,10 @@ proc gdb_internal_error_resync {} {
 		perror "Could not resync from internal error (timeout)"
 		return 0
 	    }
+	    eof {
+		perror "Could not resync from internal error (eof)"
+		return 0
+	    }
 	}
     }
     perror "Could not resync from internal error (resync count exceeded)"