- -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.
---
gcc/testsuite/gcc.target/riscv/pr91441.c | 10 ++
gcc/toplev.c | 10 +-
2 files changed, 11 insertions(+), 9 deletions(-)
create mode 100644 gcc/testsuite/gcc.target/riscv/pr91441.c
diff --git a/gcc/testsuite/gcc.target/riscv/pr91441.c
b/gcc/testsuite/gcc.target/riscv/pr91441.c
new file mode 100644
index 000..593a2972a0f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/pr91441.c
@@ -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();
+}
+/* { dg-warning ".'-fsanitize=address' and '-fsanitize=kernel-address' are not
supported for this target" "" { target *-*-* } 0 } */
diff --git a/gcc/toplev.c b/gcc/toplev.c
index 7e0b9216dea..ddbb8b49436 100644
--- a/gcc/toplev.c
+++ b/gcc/toplev.c
@@ -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. */
--
2.17.1
