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[Ada] Skip unwind-seh.c when searching first "user" frame

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On x86_64-windows with GCC 4.7 (using native SEH info), the debugger
behaves as follow:

    (gdb) catch exception unhandled
    Catchpoint 1: unhandled Ada exceptions
    (gdb) run
    Starting program: C:\[...]\b.exe

    Catchpoint 1, unhandled CONSTRAINT_ERROR at 0x000000000040cc57 in _GCC_specific_handler ([...]) at ../../../src/libgcc/unwind-seh.c:289
    [...]

This is after compiler the following code:

    procedure B is
    begin
       raise Constraint_Error;
    end B;

... using the following command:

    % gnatmake -g b

When hitting the exception catchpoint, it should have gone up the stack
all the way until finding the frame corresponding to procedure B.
But if stopped short because unwind-seh.c is compiled with debugging
information, and the debugger is also able to locate that source file.

To prevent this from happening, this patch adds unwind-seh.c to the list
of files that should be ignored, regardless of other factors.

gdb/ChangeLog:

        * ada-lang.h (ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS): Add entry for
        "unwind-seh.c".
This commit is contained in:
Joel Brobecker 2012-10-24 18:08:05 +00:00
parent 5ded533171
commit 5a04cc987f
2 changed files with 6 additions and 0 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2012-10-24 Joel Brobecker <brobecker@adacore.com>
* ada-lang.h (ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS): Add entry for
"unwind-seh.c".
2012-10-24 Joel Brobecker <brobecker@adacore.com>
* ada-lang.c (ada_template_to_fixed_record_type_1): Do not

1
gdb/ada-lang.h
View File

@ -45,6 +45,7 @@ struct inferior;
#if !defined (ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS)
#define ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS \
"^unwind-seh.c$", \
"^[agis]-.*\\.ad[bs]$",
#endif