https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106331
anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Whole array assignment of |[12/13 Regression] Whole
|empty string segfaults with |array assignment of empty
|-Og |string segfaults with -Og
Last reconfirmed| |2022-07-17
CC| |anlauf at gcc dot gnu.org
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Target Milestone|--- |12.2
Known to work| |11.3.1
Known to fail| |12.1.1
--- Comment #1 from anlauf at gcc dot gnu.org ---
Confirmed on x86_64-pc-linux-gnu with -m64 for character length 17 to 31.
For -m32 the issue does not show up, at least for the character length values
I tried.
Note however that replacing the array assignment
a = ''
by an explicit loop
do i = 1,2
a(i) = ''
end do
does not change the behavior of the reproducer.
valgrind a.out says:
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Backtrace for this error:
#0 0x5b0fd6f in ???
#1 0x4005e7 in ???
#2 0x40061f in ???
#3 0x5afa2bc in ???
#4 0x400519 in ???
#5 0xffffffffffffffff in ???
==14463==
==14463== Process terminating with default action of signal 11 (SIGSEGV):
dumping core
==14463== at 0x5B0FCB9: raise (in /lib64/libc-2.31.so)
==14463== by 0x5B0FD6F: ??? (in /lib64/libc-2.31.so)
==14463== by 0x4005E6: MAIN__ (in /home/anlauf/gcc-bugs/a.out)
==14463== by 0x40061F: main (in /home/anlauf/gcc-bugs/a.out)
I have no idea what is going on here...
