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PR target/91441 - Turn off -fsanitize=kernel-address if TARGET_ASAN_SHADOW_OFFSET is not implemented. 

- -fsanitize=kernel-address will call targetm.asan_shadow_offset ()
   at asan_shadow_offset, so it will crash if TARGET_ASAN_SHADOW_OFFSET
   is not implemented, that's mean -fsanitize=kernel-address is not
   supported for target without TARGET_ASAN_SHADOW_OFFSET implementation.

gcc/ChangeLog:

	PR target/91441
	* toplev.c (process_options): Check TARGET_ASAN_SHADOW_OFFSET is
	implemented for -fsanitize=kernel-address, and merge check logic
	with -fsanitize=address.

testsuite/ChangeLog:

	PR target/91441
	* gcc.target/riscv/pr91441.c: New.

From-SVN: r274631
This commit is contained in:
Kito Cheng 2019-08-19 03:21:44 +00:00 committed by Kito Cheng
parent 88898d1e1e
commit 6490e2556d
4 changed files with 23 additions and 9 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2019-08-19 Kito Cheng <kito.cheng@sifive.com>
PR target/91441
* toplev.c (process_options): Check TARGET_ASAN_SHADOW_OFFSET is
implemented for -fsanitize=kernel-address, and merge check logic
with -fsanitize=address.
2019-08-18 Iain Sandoe <iain@sandoe.co.uk>
* config/rs6000/darwin.h (TARGET_OS_CPP_BUILTINS): Add asserts

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2019-08-19 Kito Cheng <kito.cheng@sifive.com>
PR target/91441
* gcc.target/riscv/pr91441.c: New.
2019-08-18 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/91485

10
gcc/testsuite/gcc.target/riscv/pr91441.c Normal file
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@ -0,0 +1,10 @@
/* PR target/91441 */
/* { dg-do compile } */
/* { dg-options "--param asan-stack=1 -fsanitize=kernel-address" } */
int *bar(int *);
int *f( int a)
{
return bar(&a);
}
/* { dg-warning ".'-fsanitize=address' and '-fsanitize=kernel-address' are not supported for this target" "" { target *-*-* } 0 } */

10
gcc/toplev.c
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@ -1744,7 +1744,7 @@ process_options (void)
/* Address Sanitizer needs porting to each target architecture. */
if ((flag_sanitize & SANITIZE_ADDRESS)
&& !FRAME_GROWS_DOWNWARD)
&& (!FRAME_GROWS_DOWNWARD || targetm.asan_shadow_offset == NULL))
{
warning_at (UNKNOWN_LOCATION, 0,
"%<-fsanitize=address%> and %<-fsanitize=kernel-address%> "
@ -1752,14 +1752,6 @@ process_options (void)
flag_sanitize &= ~SANITIZE_ADDRESS;
}
if ((flag_sanitize & SANITIZE_USER_ADDRESS)
&& targetm.asan_shadow_offset == NULL)
{
warning_at (UNKNOWN_LOCATION, 0,
"%<-fsanitize=address%> not supported for this target");
flag_sanitize &= ~SANITIZE_ADDRESS;
}
/* Do not use IPA optimizations for register allocation if profiler is active
or patchable function entries are inserted for run-time instrumentation
or port does not emit prologue and epilogue as RTL. */