https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63292
Bug ID: 63292
Summary: ASan reports global-buffer-overflow in
gcc.dg/vect/pr59594.c.
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: testsuite
Assignee: unassigned at gcc dot gnu.org
Reporter: chefmax at gcc dot gnu.org
Target: x86_64-pc-linux-gnu
Build: x86_64-pc-linux-gnu
This test fails at line 20 with global buffer overflow:
$ ~/install/master/bin/gcc ~/gcc/gcc/testsuite/gcc.dg/vect/pr59594.c
-fsanitize=address -msse2 -ftree-vectorize -fno-vect-cost-model -fno-common -O2
-fdump-tree-vect-details -lm -o ./pr59594.exe
$ ./pr59594.exe
=================================================================
==2059==ERROR: AddressSanitizer: global-buffer-overflow on address
0x000000602384 at pc 0x400a4d bp 0x7fff0d9f5300 sp 0x7fff0d9f52f8
WRITE of size 4 at 0x000000602384 thread T0
#0 0x400a4c in main
(/home/max/build/master-x86_64/gcc/testsuite/gcc/pr59594.exe+0x400a4c)
#1 0x2b523822176c in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2176c)
#2 0x400aa4
(/home/max/build/master-x86_64/gcc/testsuite/gcc/pr59594.exe+0x400aa4)
0x000000602384 is located 0 bytes to the right of global variable 'b' from
'/home/max/workspace/downloads/gcc/gcc/testsuite/gcc.dg/vect/pr59594.c'
(0x601380) of size 4100
SUMMARY: AddressSanitizer: global-buffer-overflow ??:0 main
Shadow bytes around the buggy address:
0x0000800b8420: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b8430: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b8440: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b8450: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b8460: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0000800b8470:[04]f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
0x0000800b8480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b8490: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b84a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b84b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b84c0: 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
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
ASan internal: fe
==2059==ABORTING
