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* [PATCH] [gdb/exp] Limit workaround in using_direct::valid_line to broken GCC versions
@ 2026-06-04 16:21 Tom de Vries
  2026-06-18  7:53 ` [PING][PATCH] " Tom de Vries
  0 siblings, 1 reply; 3+ messages in thread
From: Tom de Vries @ 2026-06-04 16:21 UTC (permalink / raw)
  To: gdb-patches

Consider test.c:
...
     1	namespace mod_a {
     2	  int xxx = 10;
     3	}
     4
     5	static void
     6	foo ()
     7	{
     8	}
     9
    10	int
    11	main ()
    12	{
    13	  {
    14	    foo ();
    15	    using namespace mod_a;
    16	  }
    17
    18	  return mod_a::xxx;
    19	}
...
compiled with "g++ test.c -g".

Attempting to print xxx at line 14 shouldn't find anything (because it's
before the "using namespace mod_a"), but it does:
...
$ gdb -q -batch a.out -ex start -ex "p xxx"
...
Temporary breakpoint 1, main () at test.c:14
14	    foo ();
$1 = 10
...

This happens because using_direct::valid_line returns true here:
...
      return (decl_line <= curr_sal.line)
	     || (decl_line >= boundary);
...

Since we have decl_line == 15 and curr_sal.line == 14,
"(decl_line <= curr_sal.line)" evaluates to false.

But boundary == 14, so "(decl_line >= boundary)" evaluates to true.

The "(decl_line >= boundary)" bit was added as a workaround for
GCC PR debug/108716.

Since I'm using GCC 15, the workaround is not needed.

Fix this by limiting the workaround to broken GCC versions.

Tested on x86_64-linux, using GCC 15.2, and 7.5.

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=34203
---
 gdb/cp-namespace.c                       | 26 +++++++++++---
 gdb/namespace.c                          |  9 +++--
 gdb/testsuite/gdb.cp/ns-before-using.c   | 37 ++++++++++++++++++++
 gdb/testsuite/gdb.cp/ns-before-using.exp | 44 ++++++++++++++++++++++++
 4 files changed, 110 insertions(+), 6 deletions(-)
 create mode 100644 gdb/testsuite/gdb.cp/ns-before-using.c
 create mode 100644 gdb/testsuite/gdb.cp/ns-before-using.exp

diff --git a/gdb/cp-namespace.c b/gdb/cp-namespace.c
index c8cd5c245aa..16fd4e2ded8 100644
--- a/gdb/cp-namespace.c
+++ b/gdb/cp-namespace.c
@@ -33,6 +33,7 @@
 #include "namespace.h"
 #include "inferior.h"
 #include "gdbsupport/unordered_map.h"
+#include "producer.h"
 #include <string>
 #include <string.h>
 
@@ -410,9 +411,26 @@ cp_lookup_symbol_via_imports (const char *scope,
 	found_symbols[sym.symbol->m_name] = sym;
     }
 
-  /* Due to a GCC bug, we need to know the boundaries of the current block
-     to know if a certain using directive is valid.  */
-  symtab_and_line boundary_sal = find_sal_for_pc (block->end () - 1, 0);
+  unsigned boundary_line = 0;
+  {
+    struct symbol *fn = block->containing_function ();
+    int major, minor;
+    if (fn != nullptr
+	&& producer_is_gcc (fn->symtab ()->compunit ()->producer (),
+			    &major, &minor)
+	&& (major <= 9
+	    || (major == 10 && minor < 5)
+	    || (major == 11 && minor < 4)
+	    || (major == 12 && minor < 3)
+	    || (major == 13 && minor < 1)))
+      {
+	/* Due to a GCC bug (PR debug/108716, fixed in 10.5, 11.4, 12.3, 13.1),
+	   we need to know the boundaries of the current block to know if a
+	   certain using directive is valid.  */
+	symtab_and_line boundary_sal = find_sal_for_pc (block->end () - 1, 0);
+	boundary_line = boundary_sal.line;
+      }
+  }
 
   /* Go through the using directives.  If any of them add new names to
      the namespace we're searching in, see if we can find a match by
@@ -423,7 +441,7 @@ cp_lookup_symbol_via_imports (const char *scope,
 
       /* If the using directive was below the place we are stopped at,
 	 do not use this directive.  */
-      if (!current->valid_line (boundary_sal.line))
+      if (!current->valid_line (boundary_line))
 	continue;
       len = strlen (current->import_dest);
       directive_match = (search_parents
diff --git a/gdb/namespace.c b/gdb/namespace.c
index 5b5749369ee..d81365a284a 100644
--- a/gdb/namespace.c
+++ b/gdb/namespace.c
@@ -113,8 +113,13 @@ using_direct::valid_line (unsigned int boundary) const
     {
       CORE_ADDR curr_pc = get_frame_pc (get_selected_frame (nullptr));
       symtab_and_line curr_sal = find_sal_for_pc (curr_pc, 0);
-      return (decl_line <= curr_sal.line)
-	     || (decl_line >= boundary);
+
+      /* Apply GCC PR debug/108716 workaround.  */
+      if (boundary != 0
+	  && decl_line >= boundary)
+	return true;
+
+      return decl_line <= curr_sal.line;
     }
   catch (const gdb_exception &ex)
     {
diff --git a/gdb/testsuite/gdb.cp/ns-before-using.c b/gdb/testsuite/gdb.cp/ns-before-using.c
new file mode 100644
index 00000000000..f74c35b0d3f
--- /dev/null
+++ b/gdb/testsuite/gdb.cp/ns-before-using.c
@@ -0,0 +1,37 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2026 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+namespace mod_a
+{
+  int xxx = 10;
+}
+
+static void
+foo ()
+{
+}
+
+int
+main ()
+{
+  {
+    foo ();
+    using namespace mod_a;
+  }
+
+  return mod_a::xxx;
+}
diff --git a/gdb/testsuite/gdb.cp/ns-before-using.exp b/gdb/testsuite/gdb.cp/ns-before-using.exp
new file mode 100644
index 00000000000..f891cf56c49
--- /dev/null
+++ b/gdb/testsuite/gdb.cp/ns-before-using.exp
@@ -0,0 +1,44 @@
+# Copyright 2026 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+standard_testfile .c
+
+if {[prepare_for_testing "failed to prepare" $testfile $srcfile \
+	 {debug c++}]} {
+    return
+}
+
+if {![runto_main]} {
+    continue
+}
+
+# Xfail for incorrect decl_line on DW_TAG_imported_module,
+# GCC PR debug/108716.
+set have_gcc108716_xfail \
+    [expr {[test_compiler_info gcc-*] && [gcc_major_version] < 13}]
+
+# Regression test for PR exp/34203.
+set re_pass [string_to_regexp {No symbol "xxx" in current context.}]
+gdb_test_multiple "print xxx" "" {
+    -re -wrap $re_pass {
+	pass $gdb_test_name
+    }
+    -re -wrap "$valnum_re = 10" {
+	if {$have_gcc108716_xfail} {
+	    setup_xfail *-*-* gcc/108716
+	}
+	fail $gdb_test_name
+    }
+}

base-commit: bd64797371d27c766d551d0bf115d9090f1d0594
-- 
2.51.0


^ permalink raw reply	[flat|nested] 3+ messages in thread

* [PING][PATCH] [gdb/exp] Limit workaround in using_direct::valid_line to broken GCC versions
  2026-06-04 16:21 [PATCH] [gdb/exp] Limit workaround in using_direct::valid_line to broken GCC versions Tom de Vries
@ 2026-06-18  7:53 ` Tom de Vries
  2026-07-13 16:17   ` Tom de Vries
  0 siblings, 1 reply; 3+ messages in thread
From: Tom de Vries @ 2026-06-18  7:53 UTC (permalink / raw)
  To: gdb-patches

On 6/4/26 6:21 PM, Tom de Vries wrote:
> Consider test.c:
> ...
>       1	namespace mod_a {
>       2	  int xxx = 10;
>       3	}
>       4
>       5	static void
>       6	foo ()
>       7	{
>       8	}
>       9
>      10	int
>      11	main ()
>      12	{
>      13	  {
>      14	    foo ();
>      15	    using namespace mod_a;
>      16	  }
>      17
>      18	  return mod_a::xxx;
>      19	}
> ...
> compiled with "g++ test.c -g".
> 
> Attempting to print xxx at line 14 shouldn't find anything (because it's
> before the "using namespace mod_a"), but it does:
> ...
> $ gdb -q -batch a.out -ex start -ex "p xxx"
> ...
> Temporary breakpoint 1, main () at test.c:14
> 14	    foo ();
> $1 = 10
> ...
> 
> This happens because using_direct::valid_line returns true here:
> ...
>        return (decl_line <= curr_sal.line)
> 	     || (decl_line >= boundary);
> ...
> 
> Since we have decl_line == 15 and curr_sal.line == 14,
> "(decl_line <= curr_sal.line)" evaluates to false.
> 
> But boundary == 14, so "(decl_line >= boundary)" evaluates to true.
> 
> The "(decl_line >= boundary)" bit was added as a workaround for
> GCC PR debug/108716.
> 
> Since I'm using GCC 15, the workaround is not needed.
> 
> Fix this by limiting the workaround to broken GCC versions.
> 

Ping.

Thanks,
- Tom

> Tested on x86_64-linux, using GCC 15.2, and 7.5.
> 
> Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=34203
> ---
>   gdb/cp-namespace.c                       | 26 +++++++++++---
>   gdb/namespace.c                          |  9 +++--
>   gdb/testsuite/gdb.cp/ns-before-using.c   | 37 ++++++++++++++++++++
>   gdb/testsuite/gdb.cp/ns-before-using.exp | 44 ++++++++++++++++++++++++
>   4 files changed, 110 insertions(+), 6 deletions(-)
>   create mode 100644 gdb/testsuite/gdb.cp/ns-before-using.c
>   create mode 100644 gdb/testsuite/gdb.cp/ns-before-using.exp
> 
> diff --git a/gdb/cp-namespace.c b/gdb/cp-namespace.c
> index c8cd5c245aa..16fd4e2ded8 100644
> --- a/gdb/cp-namespace.c
> +++ b/gdb/cp-namespace.c
> @@ -33,6 +33,7 @@
>   #include "namespace.h"
>   #include "inferior.h"
>   #include "gdbsupport/unordered_map.h"
> +#include "producer.h"
>   #include <string>
>   #include <string.h>
>   
> @@ -410,9 +411,26 @@ cp_lookup_symbol_via_imports (const char *scope,
>   	found_symbols[sym.symbol->m_name] = sym;
>       }
>   
> -  /* Due to a GCC bug, we need to know the boundaries of the current block
> -     to know if a certain using directive is valid.  */
> -  symtab_and_line boundary_sal = find_sal_for_pc (block->end () - 1, 0);
> +  unsigned boundary_line = 0;
> +  {
> +    struct symbol *fn = block->containing_function ();
> +    int major, minor;
> +    if (fn != nullptr
> +	&& producer_is_gcc (fn->symtab ()->compunit ()->producer (),
> +			    &major, &minor)
> +	&& (major <= 9
> +	    || (major == 10 && minor < 5)
> +	    || (major == 11 && minor < 4)
> +	    || (major == 12 && minor < 3)
> +	    || (major == 13 && minor < 1)))
> +      {
> +	/* Due to a GCC bug (PR debug/108716, fixed in 10.5, 11.4, 12.3, 13.1),
> +	   we need to know the boundaries of the current block to know if a
> +	   certain using directive is valid.  */
> +	symtab_and_line boundary_sal = find_sal_for_pc (block->end () - 1, 0);
> +	boundary_line = boundary_sal.line;
> +      }
> +  }
>   
>     /* Go through the using directives.  If any of them add new names to
>        the namespace we're searching in, see if we can find a match by
> @@ -423,7 +441,7 @@ cp_lookup_symbol_via_imports (const char *scope,
>   
>         /* If the using directive was below the place we are stopped at,
>   	 do not use this directive.  */
> -      if (!current->valid_line (boundary_sal.line))
> +      if (!current->valid_line (boundary_line))
>   	continue;
>         len = strlen (current->import_dest);
>         directive_match = (search_parents
> diff --git a/gdb/namespace.c b/gdb/namespace.c
> index 5b5749369ee..d81365a284a 100644
> --- a/gdb/namespace.c
> +++ b/gdb/namespace.c
> @@ -113,8 +113,13 @@ using_direct::valid_line (unsigned int boundary) const
>       {
>         CORE_ADDR curr_pc = get_frame_pc (get_selected_frame (nullptr));
>         symtab_and_line curr_sal = find_sal_for_pc (curr_pc, 0);
> -      return (decl_line <= curr_sal.line)
> -	     || (decl_line >= boundary);
> +
> +      /* Apply GCC PR debug/108716 workaround.  */
> +      if (boundary != 0
> +	  && decl_line >= boundary)
> +	return true;
> +
> +      return decl_line <= curr_sal.line;
>       }
>     catch (const gdb_exception &ex)
>       {
> diff --git a/gdb/testsuite/gdb.cp/ns-before-using.c b/gdb/testsuite/gdb.cp/ns-before-using.c
> new file mode 100644
> index 00000000000..f74c35b0d3f
> --- /dev/null
> +++ b/gdb/testsuite/gdb.cp/ns-before-using.c
> @@ -0,0 +1,37 @@
> +/* This testcase is part of GDB, the GNU debugger.
> +
> +   Copyright 2026 Free Software Foundation, Inc.
> +
> +   This program is free software; you can redistribute it and/or modify
> +   it under the terms of the GNU General Public License as published by
> +   the Free Software Foundation; either version 3 of the License, or
> +   (at your option) any later version.
> +
> +   This program is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> +   GNU General Public License for more details.
> +
> +   You should have received a copy of the GNU General Public License
> +   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
> +
> +namespace mod_a
> +{
> +  int xxx = 10;
> +}
> +
> +static void
> +foo ()
> +{
> +}
> +
> +int
> +main ()
> +{
> +  {
> +    foo ();
> +    using namespace mod_a;
> +  }
> +
> +  return mod_a::xxx;
> +}
> diff --git a/gdb/testsuite/gdb.cp/ns-before-using.exp b/gdb/testsuite/gdb.cp/ns-before-using.exp
> new file mode 100644
> index 00000000000..f891cf56c49
> --- /dev/null
> +++ b/gdb/testsuite/gdb.cp/ns-before-using.exp
> @@ -0,0 +1,44 @@
> +# Copyright 2026 Free Software Foundation, Inc.
> +
> +# This program is free software; you can redistribute it and/or modify
> +# it under the terms of the GNU General Public License as published by
> +# the Free Software Foundation; either version 3 of the License, or
> +# (at your option) any later version.
> +#
> +# This program is distributed in the hope that it will be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> +# GNU General Public License for more details.
> +#
> +# You should have received a copy of the GNU General Public License
> +# along with this program.  If not, see <http://www.gnu.org/licenses/>.
> +
> +standard_testfile .c
> +
> +if {[prepare_for_testing "failed to prepare" $testfile $srcfile \
> +	 {debug c++}]} {
> +    return
> +}
> +
> +if {![runto_main]} {
> +    continue
> +}
> +
> +# Xfail for incorrect decl_line on DW_TAG_imported_module,
> +# GCC PR debug/108716.
> +set have_gcc108716_xfail \
> +    [expr {[test_compiler_info gcc-*] && [gcc_major_version] < 13}]
> +
> +# Regression test for PR exp/34203.
> +set re_pass [string_to_regexp {No symbol "xxx" in current context.}]
> +gdb_test_multiple "print xxx" "" {
> +    -re -wrap $re_pass {
> +	pass $gdb_test_name
> +    }
> +    -re -wrap "$valnum_re = 10" {
> +	if {$have_gcc108716_xfail} {
> +	    setup_xfail *-*-* gcc/108716
> +	}
> +	fail $gdb_test_name
> +    }
> +}
> 
> base-commit: bd64797371d27c766d551d0bf115d9090f1d0594


^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PING][PATCH] [gdb/exp] Limit workaround in using_direct::valid_line to broken GCC versions
  2026-06-18  7:53 ` [PING][PATCH] " Tom de Vries
@ 2026-07-13 16:17   ` Tom de Vries
  0 siblings, 0 replies; 3+ messages in thread
From: Tom de Vries @ 2026-07-13 16:17 UTC (permalink / raw)
  To: gdb-patches

On 6/18/26 9:53 AM, Tom de Vries wrote:
> On 6/4/26 6:21 PM, Tom de Vries wrote:
>> Consider test.c:
>> ...
>>       1    namespace mod_a {
>>       2      int xxx = 10;
>>       3    }
>>       4
>>       5    static void
>>       6    foo ()
>>       7    {
>>       8    }
>>       9
>>      10    int
>>      11    main ()
>>      12    {
>>      13      {
>>      14        foo ();
>>      15        using namespace mod_a;
>>      16      }
>>      17
>>      18      return mod_a::xxx;
>>      19    }
>> ...
>> compiled with "g++ test.c -g".
>>
>> Attempting to print xxx at line 14 shouldn't find anything (because it's
>> before the "using namespace mod_a"), but it does:
>> ...
>> $ gdb -q -batch a.out -ex start -ex "p xxx"
>> ...
>> Temporary breakpoint 1, main () at test.c:14
>> 14        foo ();
>> $1 = 10
>> ...
>>
>> This happens because using_direct::valid_line returns true here:
>> ...
>>        return (decl_line <= curr_sal.line)
>>          || (decl_line >= boundary);
>> ...
>>
>> Since we have decl_line == 15 and curr_sal.line == 14,
>> "(decl_line <= curr_sal.line)" evaluates to false.
>>
>> But boundary == 14, so "(decl_line >= boundary)" evaluates to true.
>>
>> The "(decl_line >= boundary)" bit was added as a workaround for
>> GCC PR debug/108716.
>>
>> Since I'm using GCC 15, the workaround is not needed.
>>
>> Fix this by limiting the workaround to broken GCC versions.
>>
> 
> Ping.
> 

I've pushed this.

Thanks,
- Tom

> Thanks,
> - Tom
> 
>> Tested on x86_64-linux, using GCC 15.2, and 7.5.
>>
>> Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=34203
>> ---
>>   gdb/cp-namespace.c                       | 26 +++++++++++---
>>   gdb/namespace.c                          |  9 +++--
>>   gdb/testsuite/gdb.cp/ns-before-using.c   | 37 ++++++++++++++++++++
>>   gdb/testsuite/gdb.cp/ns-before-using.exp | 44 ++++++++++++++++++++++++
>>   4 files changed, 110 insertions(+), 6 deletions(-)
>>   create mode 100644 gdb/testsuite/gdb.cp/ns-before-using.c
>>   create mode 100644 gdb/testsuite/gdb.cp/ns-before-using.exp
>>
>> diff --git a/gdb/cp-namespace.c b/gdb/cp-namespace.c
>> index c8cd5c245aa..16fd4e2ded8 100644
>> --- a/gdb/cp-namespace.c
>> +++ b/gdb/cp-namespace.c
>> @@ -33,6 +33,7 @@
>>   #include "namespace.h"
>>   #include "inferior.h"
>>   #include "gdbsupport/unordered_map.h"
>> +#include "producer.h"
>>   #include <string>
>>   #include <string.h>
>> @@ -410,9 +411,26 @@ cp_lookup_symbol_via_imports (const char *scope,
>>       found_symbols[sym.symbol->m_name] = sym;
>>       }
>> -  /* Due to a GCC bug, we need to know the boundaries of the current 
>> block
>> -     to know if a certain using directive is valid.  */
>> -  symtab_and_line boundary_sal = find_sal_for_pc (block->end () - 1, 0);
>> +  unsigned boundary_line = 0;
>> +  {
>> +    struct symbol *fn = block->containing_function ();
>> +    int major, minor;
>> +    if (fn != nullptr
>> +    && producer_is_gcc (fn->symtab ()->compunit ()->producer (),
>> +                &major, &minor)
>> +    && (major <= 9
>> +        || (major == 10 && minor < 5)
>> +        || (major == 11 && minor < 4)
>> +        || (major == 12 && minor < 3)
>> +        || (major == 13 && minor < 1)))
>> +      {
>> +    /* Due to a GCC bug (PR debug/108716, fixed in 10.5, 11.4, 12.3, 
>> 13.1),
>> +       we need to know the boundaries of the current block to know if a
>> +       certain using directive is valid.  */
>> +    symtab_and_line boundary_sal = find_sal_for_pc (block->end () - 
>> 1, 0);
>> +    boundary_line = boundary_sal.line;
>> +      }
>> +  }
>>     /* Go through the using directives.  If any of them add new names to
>>        the namespace we're searching in, see if we can find a match by
>> @@ -423,7 +441,7 @@ cp_lookup_symbol_via_imports (const char *scope,
>>         /* If the using directive was below the place we are stopped at,
>>        do not use this directive.  */
>> -      if (!current->valid_line (boundary_sal.line))
>> +      if (!current->valid_line (boundary_line))
>>       continue;
>>         len = strlen (current->import_dest);
>>         directive_match = (search_parents
>> diff --git a/gdb/namespace.c b/gdb/namespace.c
>> index 5b5749369ee..d81365a284a 100644
>> --- a/gdb/namespace.c
>> +++ b/gdb/namespace.c
>> @@ -113,8 +113,13 @@ using_direct::valid_line (unsigned int boundary) 
>> const
>>       {
>>         CORE_ADDR curr_pc = get_frame_pc (get_selected_frame (nullptr));
>>         symtab_and_line curr_sal = find_sal_for_pc (curr_pc, 0);
>> -      return (decl_line <= curr_sal.line)
>> -         || (decl_line >= boundary);
>> +
>> +      /* Apply GCC PR debug/108716 workaround.  */
>> +      if (boundary != 0
>> +      && decl_line >= boundary)
>> +    return true;
>> +
>> +      return decl_line <= curr_sal.line;
>>       }
>>     catch (const gdb_exception &ex)
>>       {
>> diff --git a/gdb/testsuite/gdb.cp/ns-before-using.c b/gdb/testsuite/ 
>> gdb.cp/ns-before-using.c
>> new file mode 100644
>> index 00000000000..f74c35b0d3f
>> --- /dev/null
>> +++ b/gdb/testsuite/gdb.cp/ns-before-using.c
>> @@ -0,0 +1,37 @@
>> +/* This testcase is part of GDB, the GNU debugger.
>> +
>> +   Copyright 2026 Free Software Foundation, Inc.
>> +
>> +   This program is free software; you can redistribute it and/or modify
>> +   it under the terms of the GNU General Public License as published by
>> +   the Free Software Foundation; either version 3 of the License, or
>> +   (at your option) any later version.
>> +
>> +   This program is distributed in the hope that it will be useful,
>> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
>> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>> +   GNU General Public License for more details.
>> +
>> +   You should have received a copy of the GNU General Public License
>> +   along with this program.  If not, see <http://www.gnu.org/ 
>> licenses/>.  */
>> +
>> +namespace mod_a
>> +{
>> +  int xxx = 10;
>> +}
>> +
>> +static void
>> +foo ()
>> +{
>> +}
>> +
>> +int
>> +main ()
>> +{
>> +  {
>> +    foo ();
>> +    using namespace mod_a;
>> +  }
>> +
>> +  return mod_a::xxx;
>> +}
>> diff --git a/gdb/testsuite/gdb.cp/ns-before-using.exp b/gdb/testsuite/ 
>> gdb.cp/ns-before-using.exp
>> new file mode 100644
>> index 00000000000..f891cf56c49
>> --- /dev/null
>> +++ b/gdb/testsuite/gdb.cp/ns-before-using.exp
>> @@ -0,0 +1,44 @@
>> +# Copyright 2026 Free Software Foundation, Inc.
>> +
>> +# This program is free software; you can redistribute it and/or modify
>> +# it under the terms of the GNU General Public License as published by
>> +# the Free Software Foundation; either version 3 of the License, or
>> +# (at your option) any later version.
>> +#
>> +# This program is distributed in the hope that it will be useful,
>> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
>> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>> +# GNU General Public License for more details.
>> +#
>> +# You should have received a copy of the GNU General Public License
>> +# along with this program.  If not, see <http://www.gnu.org/licenses/>.
>> +
>> +standard_testfile .c
>> +
>> +if {[prepare_for_testing "failed to prepare" $testfile $srcfile \
>> +     {debug c++}]} {
>> +    return
>> +}
>> +
>> +if {![runto_main]} {
>> +    continue
>> +}
>> +
>> +# Xfail for incorrect decl_line on DW_TAG_imported_module,
>> +# GCC PR debug/108716.
>> +set have_gcc108716_xfail \
>> +    [expr {[test_compiler_info gcc-*] && [gcc_major_version] < 13}]
>> +
>> +# Regression test for PR exp/34203.
>> +set re_pass [string_to_regexp {No symbol "xxx" in current context.}]
>> +gdb_test_multiple "print xxx" "" {
>> +    -re -wrap $re_pass {
>> +    pass $gdb_test_name
>> +    }
>> +    -re -wrap "$valnum_re = 10" {
>> +    if {$have_gcc108716_xfail} {
>> +        setup_xfail *-*-* gcc/108716
>> +    }
>> +    fail $gdb_test_name
>> +    }
>> +}
>>
>> base-commit: bd64797371d27c766d551d0bf115d9090f1d0594
> 


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2026-06-04 16:21 [PATCH] [gdb/exp] Limit workaround in using_direct::valid_line to broken GCC versions Tom de Vries
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