http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55509
Bug #: 55509
Summary: gcc.dg/torture/matrix-6.c failures with
-fsanitize=address
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: howa...@nitro.med.uc.edu
CC: do...@gcc.gnu.org, dvyu...@gcc.gnu.org,
ja...@gcc.gnu.org, k...@gcc.gnu.org
Using...
make -k check-gcc RUNTESTFLAGS="--target_board=unix'{-fsanitize=address}'"
on x86_64-apple-darwin12 produces execution failures in...
FAIL: gcc.dg/torture/matrix-6.c -O1 execution test
FAIL: gcc.dg/torture/matrix-6.c -O2 execution test
FAIL: gcc.dg/torture/matrix-6.c -O3 -fomit-frame-pointer execution test
FAIL: gcc.dg/torture/matrix-6.c -O3 -fomit-frame-pointer -funroll-loops
execution test
FAIL: gcc.dg/torture/matrix-6.c -O3 -fomit-frame-pointer -funroll-all-loops
-finline-functions execution test
FAIL: gcc.dg/torture/matrix-6.c -O3 -g execution test
FAIL: gcc.dg/torture/matrix-6.c -Os execution test
FAIL: gcc.dg/torture/matrix-6.c -O2 -flto -flto-partition=none execution test
FAIL: gcc.dg/torture/matrix-6.c -O2 -flto execution test
These are of the form...
Executing on host: /sw/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/gcc/xgcc
-B/sw/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/gcc/
/sw/src/fink.build/gcc48-4.8.0-1000/gcc-4.8-20121127/gcc/testsuite/gcc.dg/torture/matrix-6.c
-fno-diagnostics-show-caret -O1 -fwhole-program -lm -fsanitize=address
-o ./matrix-6.exe (timeout = 300)
PASS: gcc.dg/torture/matrix-6.c -O1 (test for excess errors)
Setting LD_LIBRARY_PATH to
:/sw/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/gcc:/sw/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/x86_64-apple-darwin12.2.0/./libsanitizer/asan/.libs::/sw/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/gcc:/sw/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/x86_64-apple-darwin12.2.0/./libsanitizer/asan/.libs
=================================================================
==61894== ERROR: AddressSanitizer: stack-buffer-overflow on address
0x7fff54070784 at pc 0x10bb8cc7d bp 0x7fff54070730 sp 0x7fff54070728
READ of size 4 at 0x7fff54070784 thread T0
#0 0x10bb8cc7c
(/sw/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/gcc/testsuite/gcc/./matrix-6.exe+0x100000c7c)
Address 0x7fff54070784 is located at offset 36 in frame <main> of T0's stack:
This frame has 1 object(s):
[32, 36) 'd'
HINT: this may be a false positive if your program uses some custom stack
unwind mechanism or swapcontext
(longjmp and C++ exceptions *are* supported)
Shadow byte and word:
0x1fffea80e0f0: 4
0x1fffea80e0f0: 04 f4 f4 f4 f3 f3 f3 f3
More shadow bytes:
0x1fffea80e0d0: 00 00 00 00 00 00 00 00
0x1fffea80e0d8: 00 00 00 00 00 00 00 00
0x1fffea80e0e0: 00 00 00 00 00 00 00 00
0x1fffea80e0e8: 00 00 00 00 f1 f1 f1 f1
=>0x1fffea80e0f0: 04 f4 f4 f4 f3 f3 f3 f3
0x1fffea80e0f8: 00 00 00 00 00 00 00 00
0x1fffea80e100: 00 00 00 00 00 00 00 00
0x1fffea80e108: 00 00 00 00 00 00 00 00
0x1fffea80e110: 00 00 00 00 00 00 00 00
Stats: 0M malloced (0M for red zones) by 10 calls
Stats: 0M realloced by 0 calls
Stats: 0M freed by 0 calls
Stats: 0M really freed by 0 calls
Stats: 1M (257 full pages) mmaped in 2 calls
mmaps by size class: 7:4095; 15:16;
mallocs by size class: 7:9; 15:1;
frees by size class:
rfrees by size class:
Stats: malloc large: 1 small slow: 1
==61894== ABORTING
Executing on host: addr2line -f -e
/sw/src/fink.build/gcc48-4.8.0-1000/darwin_objdir/gcc/testsuite/gcc/./matrix-6.exe
0x100000c7c (timeout = 300)
FAIL: gcc.dg/torture/matrix-6.c -O1 execution test
