[PATCH] gprof: Copy a simple test from glibc

[Jan Beulich]

On 28.03.2025 16:23, H.J. Lu wrote:
> On Fri, Mar 28, 2025 at 1:46 AM Jan Beulich <jbeulich@suse.com> wrote:
>>
>> On 07.03.2025 00:00, H.J. Lu wrote:
>>> Copy a simple gprof test from glibc to test the basic gprof functionality.
>>>
>>> PR gprof/32764
>>> * Makefile.am (SUBDIRS): Add testsuite
>>> * configure.ac (AC_CONFIG_FILES): Removed.
>>> (AC_OUTPUT): Add Makefile testsuite/Makefile
>>> po/Makefile.in:po/Make-in.
>>> (AM_CONDITIONAL): Add NATIVE.
>>> * Makefile.in: Regenerated.
>>> * configure: Likewise.
>>> * testsuite/Makefile.am: New file.
>>> * testsuite/tst-gmon-gprof.sh: Likewise.
>>> * testsuite/tst-gmon.c: Likewise.
>>> * testsuite/Makefile.in: Generated.
>>
>> This and the other new test fail for me on both x86-64 systems I tried - the
>> f3 line isn't present in gprof output. I fear I don't have the time to
>> investigate from grounds up. IOW either I need pointers that make
>> investigation reasonably easy, or I'll propose to disable the tests again
>> until this is sorted. The one thing I did check is that the object file has
>> all the supposed calls to mcount(). If it matters, one system is using gcc5,
>> the other gcc7.
> 
> These tests work for me with gcc 5.4.1 and 7.4.1.  Please try
> 
> https://sourceware.org/pipermail/binutils/2025-March/140257.html

Well, tst-gmon.o clearly had debug info (incl .debug_line) already. So no
difference there. Ftaod tst-gmon similarly has debug info (incl .debug_line).
Must be something else, possibly in gprof itself.

Jan