[PATCH] D23676: [asan] Add one more test for __asan_set_shadow_*

[Vitaly Buka via llvm-commits]

vitalybuka created this revision.
vitalybuka added reviewers: eugenis, filcab.
vitalybuka added a subscriber: llvm-commits.
Herald added a subscriber: kubabrecka.

https://reviews.llvm.org/D23676

Files:
  test/asan/TestCases/set_shadow_test.c

Index: test/asan/TestCases/set_shadow_test.c
===================================================================
--- /dev/null
+++ test/asan/TestCases/set_shadow_test.c
@@ -0,0 +1,61 @@
+// RUN: %clang_asan -O0 %s -o %t
+// RUN: %run %t 0x00 2>&1 | FileCheck %s -check-prefix=X00
+// RUN: not %run %t 0xf1 2>&1 | FileCheck %s -check-prefix=XF1
+// R1UN: not %run %t 0xf2 2>&1 | FileCheck %s -check-prefix=XF2
+// R1UN: not %run %t 0xf3 2>&1 | FileCheck %s -check-prefix=XF3
+// R1UN: not %run %t 0xf5 2>&1 | FileCheck %s -check-prefix=XF5
+// R1UN: not %run %t 0xf8 2>&1 | FileCheck %s -check-prefix=XF8
+
+#include <assert.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sanitizer/asan_interface.h>
+
+void __asan_set_shadow_00(size_t addr, size_t size);
+void __asan_set_shadow_f1(size_t addr, size_t size);
+void __asan_set_shadow_f2(size_t addr, size_t size);
+void __asan_set_shadow_f3(size_t addr, size_t size);
+void __asan_set_shadow_f5(size_t addr, size_t size);
+void __asan_set_shadow_f8(size_t addr, size_t size);
+
+char a __attribute__((aligned(8)));
+
+void f(long arg) {
+  size_t shadow_offset;
+  size_t shadow_scale;
+  __asan_get_shadow_mapping(&shadow_scale, &shadow_offset);
+  size_t addr = (((size_t)&a) >> shadow_scale) + shadow_offset;
+
+  switch (arg) {
+      // X00-NOT: AddressSanitizer
+      // X00: PASS
+      case 0x00: return __asan_set_shadow_00(addr, 1);
+      // XF1: AddressSanitizer: stack-buffer-underflow
+      // XF1: [f1]
+      case 0xf1: return __asan_set_shadow_f1(addr, 1);
+      // XF2: AddressSanitizer: stack-buffer-overflow
+      // XF2: [f2]
+      case 0xf2: return __asan_set_shadow_f2(addr, 1);
+      // XF3: AddressSanitizer: stack-buffer-overflow
+      // XF3: [f3]
+      case 0xf3: return __asan_set_shadow_f3(addr, 1);
+      // XF5: AddressSanitizer: stack-use-after-return
+      // XF5: [f5]
+      case 0xf5: return __asan_set_shadow_f5(addr, 1);
+      // XF8: AddressSanitizer: stack-use-after-scope
+      // XF8: [f8]
+      case 0xf8: return __asan_set_shadow_f8(addr, 1);
+  }
+  assert(0);
+}
+
+int main(int argc, char **argv) {
+  assert(argc > 1);
+  
+  long arg = strtol(argv[1], 0, 16);
+  f(arg);
+  a = 1;
+  printf("PASS\n");
+  return 0;
+}


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