https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83823
--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
-fsanitize=address gives:
==21482==ERROR: AddressSanitizer: global-buffer-overflow on address
0x000000402624 at pc 0x7f6d755ede76 bp 0x7ffed65778c0 sp 0x7ffed6577070
READ of size 5 at 0x000000402624 thread T0
#0 0x7f6d755ede75 in __interceptor_memmove
../../../../trunk/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:720
#1 0x40134d in gfcbug145 /tmp/foo.f90:14
#2 0x402323 in main /tmp/foo.f90:17
#3 0x7f6d745f6f49 in __libc_start_main (/lib64/libc.so.6+0x20f49)
#4 0x400c89 in _start (/tmp/a.out+0x400c89)
0x000000402624 is located 60 bytes to the left of global variable '*.LC6'
defined in 'foo.f90' (0x402660) of size 5
0x000000402624 is located 0 bytes to the right of global variable '*.LC5'
defined in 'foo.f90' (0x402620) of size 4
SUMMARY: AddressSanitizer: global-buffer-overflow
../../../../trunk/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:720
in __interceptor_memmove
Shadow bytes around the buggy address:
0x000080078470: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078490: 00 00 00 00 00 00 00 00 00 00 00 00 00 f9 f9 f9
0x0000800784a0: f9 f9 f9 f9 00 06 f9 f9 f9 f9 f9 f9 00 00 00 00
0x0000800784b0: f9 f9 f9 f9 05 f9 f9 f9 f9 f9 f9 f9 05 f9 f9 f9
=>0x0000800784c0: f9 f9 f9 f9[04]f9 f9 f9 f9 f9 f9 f9 05 f9 f9 f9
0x0000800784d0: f9 f9 f9 f9 00 00 00 00 f9 f9 f9 f9 00 00 00 00
0x0000800784e0: f9 f9 f9 f9 00 00 00 04 f9 f9 f9 f9 00 00 00 00
0x0000800784f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078510: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
This is the print *, pack (obstyp% name, mask) line.
