http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55844
Bug #: 55844
Summary: -fsanitize=address -Os -fno-omit-frame-pointer
-mno-omit-leaf-frame-pointer -m64 doesn't work
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: hjl.to...@gmail.com
CC: do...@gcc.gnu.org, dvyu...@gcc.gnu.org,
ja...@gcc.gnu.org, k...@gcc.gnu.org
c-c++-common/asan/null-deref-1.c fails with -m64 since
-fsanitize=address -Os -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer
-m64
still omit frame pointer:
[hjl@gnu-tools-1 gcc]$ cat /tmp/x.c
void
NullDeref(int *ptr)
{
ptr[10]++;
}
[hjl@gnu-tools-1 gcc]$
/export/build/gnu/gcc-x32-mx32/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc-x32-mx32/build-x86_64-linux/gcc/ /tmp/x.c -S -Os
-fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -m64 -fsanitize=address
[hjl@gnu-tools-1 gcc]$ cat x.s
.file "x.c"
.text
.globl NullDeref
.type NullDeref, @function
NullDeref:
.LFB0:
.cfi_startproc
movq %rdi, %rax
leaq 40(%rdi), %rdi
movabsq $17592186044416, %rdx
movq %rdi, %rcx
shrq $3, %rcx
movb (%rcx,%rdx), %dl
movq %rdi, %rcx
andl $7, %ecx
addl $3, %ecx
cmpb %dl, %cl
jl .L2
testb %dl, %dl
je .L2
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset 6, -16
movq %rsp, %rbp
.cfi_def_cfa_register 6
call __asan_report_load4
.L2:
.cfi_def_cfa 7, 8
.cfi_restore 6
incl 40(%rax)
ret
.cfi_endproc
.LFE0:
.size NullDeref, .-NullDeref
.section .text.startup,"ax",@progbits
.type _GLOBAL__sub_I_00099_0_NullDeref, @function
_GLOBAL__sub_I_00099_0_NullDeref:
.LFB1:
.cfi_startproc
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset 6, -16
movq %rsp, %rbp
.cfi_def_cfa_register 6
popq %rbp
.cfi_def_cfa 7, 8
jmp __asan_init
.cfi_endproc
.LFE1:
.size _GLOBAL__sub_I_00099_0_NullDeref,
.-_GLOBAL__sub_I_00099_0_NullDeref
.section .init_array.00099,"aw"
.align 8
.quad _GLOBAL__sub_I_00099_0_NullDeref
.ident "GCC: (GNU) 4.8.0 20130101 (experimental)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-tools-1 gcc]$
/export/build/gnu/gcc-x32-mx32/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc-x32-mx32/build-x86_64-linux/gcc/ /tmp/x.c -S -Os
-fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -m64
[hjl@gnu-tools-1 gcc]$ cat x.s
.file "x.c"
.text
.globl NullDeref
.type NullDeref, @function
NullDeref:
.LFB0:
.cfi_startproc
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset 6, -16
incl 40(%rdi)
movq %rsp, %rbp
.cfi_def_cfa_register 6
popq %rbp
.cfi_def_cfa 7, 8
ret
.cfi_endproc
.LFE0:
.size NullDeref, .-NullDeref
.ident "GCC: (GNU) 4.8.0 20130101 (experimental)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-tools-1 gcc]$
