https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104687
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2022-02-25
CC| |marxin at gcc dot gnu.org
Ever confirmed|0 |1
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot
gnu.org
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
You are correct of course:
gcc pr104687.c pr104687-2.c -fsanitize=address -g && ./a.out
=================================================================
==3100==ERROR: AddressSanitizer: global-buffer-overflow on address
0x000000404100 at pc 0x0000004011e9 bp 0x7fffffffde10 sp 0x7fffffffde08
READ of size 8 at 0x000000404100 thread T0
#0 0x4011e8 in main /home/marxin/Programming/testcases/pr104687-2.c:8
#1 0x7ffff73ca62f in __libc_start_call_main
../sysdeps/nptl/libc_start_call_main.h:58
#2 0x7ffff73ca6ef in __libc_start_main_impl ../csu/libc-start.c:392
#3 0x4010a4 in _start (/home/marxin/Programming/testcases/a.out+0x4010a4)
0x000000404100 is located 0 bytes to the right of global variable 'table'
defined in 'pr104687.c:4:17' (0x404100) of size 0
'table' is ascii string ''
SUMMARY: AddressSanitizer: global-buffer-overflow
/home/marxin/Programming/testcases/pr104687-2.c:8 in main
Shadow bytes around the buggy address:
0x0000800787d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800787e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800787f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078810: f9 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
=>0x000080078820:[f9]f9 f9 f9 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078830: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078840: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078850: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078860: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078870: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Let me fix that.
