https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62132
Bug ID: 62132 Summary: [5.0 Regression] FAIL: c-c++-common/asan/misalign-[12].c after r213807 on x86_64-apple-darwin13 with -m32 Product: gcc Version: 5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: sanitizer Assignee: unassigned at gcc dot gnu.org Reporter: dominiq at lps dot ens.fr CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org, iains at gcc dot gnu.org, jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, ygribov at gcc dot gnu.org Host: x86_64-apple-darwin13 Target: x86_64-apple-darwin13 Build: x86_64-apple-darwin13 On x86_64-apple-darwin13 with -m32 the following tests fail after r213807: Running target unix/-m32 FAIL: c-c++-common/asan/misalign-1.c -O0 output pattern test, is ================================================================= FAIL: c-c++-common/asan/misalign-1.c -O1 output pattern test, is ================================================================= FAIL: c-c++-common/asan/misalign-1.c -O2 output pattern test, is ================================================================= FAIL: c-c++-common/asan/misalign-1.c -O3 -fomit-frame-pointer output pattern test, is ================================================================= FAIL: c-c++-common/asan/misalign-1.c -O3 -g output pattern test, is ================================================================= FAIL: c-c++-common/asan/misalign-1.c -Os output pattern test, is ================================================================= FAIL: c-c++-common/asan/misalign-1.c -O2 -flto -flto-partition=none output pattern test, is ================================================================= FAIL: c-c++-common/asan/misalign-1.c -O2 -flto output pattern test, is ================================================================= FAIL: c-c++-common/asan/misalign-2.c -O0 output pattern test, is ================================================================= FAIL: c-c++-common/asan/misalign-2.c -O1 output pattern test, is ================================================================= FAIL: c-c++-common/asan/misalign-2.c -O2 output pattern test, is ================================================================= FAIL: c-c++-common/asan/misalign-2.c -O3 -fomit-frame-pointer output pattern test, is ================================================================= FAIL: c-c++-common/asan/misalign-2.c -O3 -g output pattern test, is ================================================================= FAIL: c-c++-common/asan/misalign-2.c -Os output pattern test, is ================================================================= FAIL: c-c++-common/asan/misalign-2.c -O2 -flto -flto-partition=none output pattern test, is ================================================================= FAIL: c-c++-common/asan/misalign-2.c -O2 -flto output pattern test, is ================================================================= In 64 bit mode the output is ================================================================= ==48043==ERROR: AddressSanitizer: unknown-crash on address 0x7fff5ba3f3bf at pc 0x1041c0bf2 bp 0x7fff5ba3f2f0 sp 0x7fff5ba3f2e8 READ of size 4 at 0x7fff5ba3f3bf thread T0 #0 0x1041c0bf1 (/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x100000bf1) #1 0x1041c0e8f (/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x100000e8f) Address 0x7fff5ba3f3bf is located in stack of thread T0 at offset 175 in frame #0 0x1041c0caf (/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x100000caf) ... while in 32 bit mode, it is ================================================================= ==48035==ERROR: AddressSanitizer: unknown-crash on address 0xbffda4cf at pc 0x26b19 bp 0xbffda3d8 sp 0xbffda3cc READ of size 4 at 0xbffda4cf thread T0 #0 0x26b18 (/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x1b18) Address 0xbffda4cf is located in stack of thread T0 at offset 175 in frame #0 0x26bef (/Users/dominiq/Documents/Fortran/g95bench/win/f90/bug/a.out+0x1bef) ... i.e., the #1 line is missing. Revision r213806 is OK.