On my Debian/unstable x86_64 machine (with GMP 6.1.2):
#include <gmp.h>
int main (void)
{
mpz_t z;
mpz_init (z);
mpz_set_ui (z, 1);
mpz_dump (z);
mpz_clear (z);
return 0;
}
compiled with: clang-7 -fsanitize=memory -o tst tst.c -lgmp
gives the following error:
cventin:~> ./tst
Uninitialized bytes in __interceptor_puts at offset 1 inside [0x701000000010, 2)
==17647==WARNING: MemorySanitizer: use-of-uninitialized-value
#0 0x7fbf03e6fe6a in __gmpz_dump
(/usr/lib/x86_64-linux-gnu/libgmp.so.10+0x18e6a)
#1 0x49518a in main (/home/vlefevre/tst+0x49518a)
#2 0x7fbf03aeb09a in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2409a)
#3 0x41e2b9 in _start (/home/vlefevre/tst+0x41e2b9)
SUMMARY: MemorySanitizer: use-of-uninitialized-value
(/usr/lib/x86_64-linux-gnu/libgmp.so.10+0x18e6a) in __gmpz_dump
Exiting
zsh: exit 77 ./tst
--
Vincent Lefèvre <vinc...@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
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