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Re: -pg problem on -current

On Mon, 8 Nov 2021, Thomas Klausner wrote:

I'm trying to profile on NetBSD 9.99.92/amd64.

I do:
pkgin in libzip
git clone
cd ckmame
mkdir build
cd build
CFLAGS=-pg CXXFLAGS=-pg cmake ..

The build breaks when a binary that is built is run to generate test data.

# gdb src/ckmame
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Reading symbols from src/ckmame...
(gdb) r
Starting program: /home/wiz/Projects/nih/ckmame/a/ckmame/build/src/ckmame

Program received signal SIGSEGV, Segmentation fault.
0x0000000000495432 in dl_iterate_phdr ()
(gdb) bt
#0  0x0000000000495432 in dl_iterate_phdr ()
#1  0x0000000000496da6 in __libc_static_tls_setup ()
#2  0x0000000000586e47 in _libc_init ()
#3  0x00007f7ff5e02d2d in _rtld_call_function_void (addr=5795328, obj=0x789df0963c00) at /disk/6/archive/foreign/src/libexec/ld.elf_so/rtld.h:514
#4  _rtld_call_initfini_function (mask=0x7f7fff397980, func=5795328, obj=0x789df0963c00) at /disk/6/archive/foreign/src/libexec/ld.elf_so/rtld.c:143
#5  _rtld_call_init_function (cur_objgen=<optimized out>, mask=<optimized out>, obj=<optimized out>)
   at /disk/6/archive/foreign/src/libexec/ld.elf_so/rtld.c:258
#6  _rtld_call_init_function (obj=0x789df0963c00, mask=0x7f7fff397980, cur_objgen=1) at /disk/6/archive/foreign/src/libexec/ld.elf_so/rtld.c:232
#7  0x00007f7ff5e02fee in _rtld_call_init_functions (mask=mask@entry=0x7f7fff397980) at /disk/6/archive/foreign/src/libexec/ld.elf_so/rtld.c:316
#8  0x00007f7ff5e03a21 in _rtld (sp=<optimized out>, relocbase=<optimized out>) at /disk/6/archive/foreign/src/libexec/ld.elf_so/rtld.c:784
#9  0x00007f7ff5e00803 in rtld_start () from /usr/libexec/ld.elf_so
#10 0x0000000000000000 in ?? ()

-pg still works for me on C programs and a minimal "int main()[]" c++
program.  Am I doing something wrong here or is there a bug in the

Perhaps there are better ways to profile programs nowadays, let me
know too.

See PR #56031

Profiling needs -static.


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