https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66578
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-06-17
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I don't see the invalid free on x86_64-apple-darwin14, but if I compile the
code with -fsanitize=address, I get at run time
==49974==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x60f00000effc at pc 0x00010b20fa1d bp 0x7fff549f11f0 sp 0x7fff549f11e8
READ of size 4 at 0x60f00000effc thread T0
#0 0x10b20fa1c
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x100001a1c)
#1 0x10b20fb67
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x100001b67)
#2 0x7fff8ecb55c8 (/usr/lib/system/libdyld.dylib+0x35c8)
#3 0x0 (<unknown module>)
0x60f00000effc is located 0 bytes to the right of 172-byte region
[0x60f00000ef50,0x60f00000effc)
allocated by thread T0 here:
#0 0x10b24755a (/opt/gcc/gcc6w/lib/libasan.2.dylib+0x3255a)
#1 0x10b20f761
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x100001761)
#2 0x10b20fb67
(/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x100001b67)
#3 0x7fff8ecb55c8 (/usr/lib/system/libdyld.dylib+0x35c8)
#4 0x0 (<unknown module>)
SUMMARY: AddressSanitizer: heap-buffer-overflow ??:0 ??
Shadow bytes around the buggy address:
0x1c1e00001da0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c1e00001db0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c1e00001dc0: fa fa fa fa fa fa fa fa fa fa fa fa 00 00 00 00
0x1c1e00001dd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x1c1e00001de0: 00 04 fa fa fa fa fa fa fa fa 00 00 00 00 00 00
=>0x1c1e00001df0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00[04]
0x1c1e00001e00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c1e00001e10: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c1e00001e20: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c1e00001e30: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c1e00001e40: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
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
Heap right redzone: fb
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack partial redzone: f4
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
==49974==ABORTING
