1 files changed, 26 insertions, 0 deletions
diff --git a/compiler-rt/test/hwasan/TestCases/malloc_bisect.c b/compiler-rt/test/hwasan/TestCases/malloc_bisect.c
new file mode 100644
index 00000000000..51cbbfe2a13
--- /dev/null
+++ b/compiler-rt/test/hwasan/TestCases/malloc_bisect.c
@@ -0,0 +1,26 @@
+// RUN: %clang_hwasan -O0 %s -o %t
+// RUN: %env_hwasan_opts=malloc_bisect_left=0,malloc_bisect_right=0          not %run %t 2>&1 | \
+// RUN:     FileCheck %s --check-prefix=CRASH
+// RUN: %env_hwasan_opts=malloc_bisect_left=1000,malloc_bisect_right=999         %run %t 2>&1
+// RUN: %env_hwasan_opts=malloc_bisect_left=0,malloc_bisect_right=4294967295 not %run %t 2>&1 | \
+// RUN:     FileCheck %s --check-prefix=CRASH
+// RUN: %env_hwasan_opts=malloc_bisect_left=0,malloc_bisect_right=4294967295,malloc_bisect_dump=1 not %run %t 2>&1 | \
+// RUN:     FileCheck %s --check-prefixes=CRASH,DUMP
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <sanitizer/hwasan_interface.h>
+
+int main() {
+  __hwasan_enable_allocator_tagging();
+  // DUMP: [alloc] {{.*}} 10{{$}}
+  // DUMP: in main{{.*}}malloc_bisect.c
+  char * volatile p = (char*)malloc(10);
+  // CRASH: HWAddressSanitizer: tag-mismatch on address
+  // CRASH: in main{{.*}}malloc_bisect.c
+  char volatile x = p[16];
+  free(p);
+  __hwasan_disable_allocator_tagging();
+
+  return 0;
+}