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azat/test-dlsym.c

Created December 31, 2022 22:35
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different behavior of dlsym since glibc 2.36
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test-dlsym.c
#define _GNU_SOURCE
#include <dlfcn.h>
#include <stdio.h>
int main()
{
void *p = dlsym(RTLD_NEXT, "__pthread_mutex_lock");
printf("__pthread_mutex_lock: %p (via RTLD_NEXT)\n", p);
return 0;
}
Raw
test-dlsym.log
libc 2.35: __pthread_mutex_lock: 0x7ffff7e27f70 (via RTLD_NEXT)
libc 2.36: __pthread_mutex_lock: (nil) (via RTLD_NEXT)
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azat commented Dec 31, 2022

https://sourceware.org/bugzilla/show_bug.cgi?id=14932

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azat commented Dec 31, 2022

https://sourceware.org/git/?p=glibc.git;a=commit;h=efa7936e4c91b1c260d03614bb26858fbb8a0204

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