Date: Sun, 26 Jan 2025 12:16:53 -0800 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: freebsd-hackers@freebsd.org Subject: gcc14 static linking ends with segfault Message-ID: <Z5aYNdVQdGdVImBG@troutmask.apl.washington.edu>
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In replacing an ancient system with new I re-installed all ports
including lang/gcc14 of FreeBSD-current. -current is 2 day old
sources.
Consider,
#include <stdio.h>
#include <stdlib.h>
#include "mpfr.h"
int
main(void)
{
mpfr_t pi;
mpfr_inits2(512, pi, NULL);
mpfr_const_pi(pi, MPFR_RNDN);
mpfr_printf("pi = %25.20Rf\n", pi);
// A conscientious programmer cleans up after themself,
// but on exit the system should take care of memory.
// mpfr_clears(pi, NULL);
return (0);
}
% gcc14 -o z -O2 -I/usr/local/include a.c -L/usr/local/lib -lmpfr -lgmp
% ./z
pi = 3.14159265358979323846
All seems to work with shared linking.
The following used to work.
% gcc14 -o z -O2 -I/usr/local/include a.c -L/usr/local/lib -lmpfr -lgmp \
-static
% ./z
pi = 3.14159265358979323846
Segmentation fault (core dumped)
% gdb151 ./z z.core
...
#0 0x0000000000427ba5 in __gmpn_mul_1 ()
(gdb) bt
#0 0x0000000000427ba5 in __gmpn_mul_1 ()
#1 0x000000000040051f in __do_global_dtors_aux ()
at /usr/src/lib/csu/common/crtbegin.c:83
#2 0x00000000004bc165 in _fini ()
#3 0x0000000000458a7f in __cxa_finalize (dso=dso@entry=0x0)
at /usr/src/lib/libc/stdlib/atexit.c:234
#4 0x0000000000458b70 in exit (status=0) at /usr/src/lib/libc/stdlib/exit.c:89
#5 0x00000000004483d9 in __libc_start1 (argc=1, argv=0x820a52900,
env=0x820a52910, cleanup=<optimized out>, mainX=0x400480 <main>)
at /usr/src/lib/libc/csu/libc_start1.c:172
#6 0x00000000004004f0 in _start () at /usr/src/lib/csu/amd64/crt1_s.S:83
So, did someone break the startup files?
--
Steve
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