https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116885
--- Comment #3 from Jaroslav Fojtík <JaFojtik at seznam dot cz> ---
It seems to me that this problem has something to do with memcpy optimised for
AVX, that newly requests everything to be alligned.
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<<<struct>>> (c)1998-2024 Jaroslav Fojtik
This program tests the struct.c library
***LO_ENDIAN defined***
***NATIVE access***
Testing struct manipulation
Program received signal SIGSEGV, Segmentation fault.
__memcpy_avx_unaligned ()
at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:220
warning: 220 ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S: No
such file or directory
(gdb)
(gdb)
(gdb)
(gdb)
(gdb) backtrace
#0 __memcpy_avx_unaligned () at
../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:220
#1 0x00007ffff7e41ce7 in _IO_new_file_xsputn (n=423, data=0xd,
f=0x55555555a6b0) at ./libio/fileops.c:1236
#2 _IO_new_file_xsputn (f=0x55555555a6b0, data=0xd, n=423) at
./libio/fileops.c:1197
#3 0x00007ffff7e35d6e in __GI__IO_fwrite (buf=0xd, size=size@entry=1,
count=423, fp=fp@entry=0x55555555a6b0)
at ./libio/libioP.h:1030
#4 0x000055555555608d in savestruct (F=0x55555555a6b0,
description=0x555555557767 <StructTopol+23> "3",
description@entry=0x555555557750 <StructTopol> "a20wwwdwwwqqqqqwwddba423")
at struct.c:486
#5 0x000055555555635e in SaveTopolHeader (f=<optimized out>,
SU=SU@entry=0x7fffffffe100) at mintest.c:50
#6 0x00005555555552bd in main (argc=<optimized out>, argv=<optimized out>) at
mintest.c:143
(gdb)
