Hi,

I'm in the following situation and need help understanding why
valgrind doesn't show debug symbols. First of all, I'm on Linux 4.15
x86_64, valgrind 3.13.0. I'm running valgrind on ANGLE
(angleproject.org). Normally, this library provides a .so file that I
believe gets dynamically loaded, but a few of the tests statically
link against this library.

Verification #1: I can verify that the executable I'm running is
statically linked because ldd doesn't show a dependency to the
library.

I know the debug symbols are there. The code is built with -g2.

Verification #2: Running gdb on the execution and breaking shows the
symbols. `nm -l` shows the symbols and their paths as well.

However, the stack traces I get from valgrind are of the following form:

==1199==    at 0x61F1F89: sched_setaffinity@@GLIBC_2.3.4
(sched_setaffinity.c:35)
==1199==    by 0x3B3D7F: ??? (in /path/to/angle_perftests)
==1199==    by 0x326D02: ??? (in /path/to/angle_perftests)
==1199==    by 0x38F6FC: ??? (in /path/to/angle_perftests)
==1199==    by 0x39082F: ??? (in /path/to/angle_perftests)
==1199==    by 0x390EC6: ??? (in /path/to/angle_perftests)
==1199==    by 0x39CF86: ??? (in /path/to/angle_perftests)
==1199==    by 0x39CAAB: ??? (in /path/to/angle_perftests)
==1199==    by 0x37CB0D: ??? (in /path/to/angle_perftests)
==1199==    by 0x610FB96: (below main) (libc-start.c:310)
==1199==  Address 0x1ffefff9c8 is on thread 1's stack

This doesn't match any of the possible outputs in question 4.2 of the
faq (http://valgrind.org/docs/manual/faq.html)!

If I run readelf -s, then I can see that many of the symbols are
marked as HIDDEN under the Vis column (something for which I can't
seem to find any documentation).

Can anybody make sense of what's going on, or has any idea why
valgrind is unable to give me debug symbols?

Cheers,


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