1 files changed, 103 insertions, 0 deletions
diff --git a/compiler-rt/test/asan/TestCases/invalid-pointer-pairs-compare-errors.cc b/compiler-rt/test/asan/TestCases/invalid-pointer-pairs-compare-errors.cc
new file mode 100644
index 00000000000..82f63359ead
--- /dev/null
+++ b/compiler-rt/test/asan/TestCases/invalid-pointer-pairs-compare-errors.cc
@@ -0,0 +1,103 @@
+// RUN: %clangxx_asan -O0 %s -o %t -mllvm -asan-detect-invalid-pointer-pair
+
+// RUN: %env_asan_opts=detect_invalid_pointer_pairs=1:halt_on_error=0 %run %t 2>&1 | FileCheck %s
+
+#include <assert.h>
+#include <stdlib.h>
+
+int foo(char *p, char *q) {
+  return p > q;
+}
+
+char global1[100] = {}, global2[100] = {};
+char small_global[7] = {};
+char large_global[5000] = {};
+
+int main() {
+  // Heap allocated memory.
+  char *heap1 = (char *)malloc(42);
+  char *heap2 = (char *)malloc(42);
+
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(heap1, heap2);
+  free(heap1);
+  free(heap2);
+
+  heap1 = (char *)malloc(1024);
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(heap1, heap1 + 1025);
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(heap1 + 1024, heap1 + 1025);
+  free(heap1);
+
+  heap1 = (char *)malloc(4096);
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(heap1, heap1 + 4097);
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(heap1, 0);
+
+  // Global variables.
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(&global1[0], &global2[10]);
+
+  char *p = &small_global[0];
+  foo(p, p); // OK
+  foo(p, p + 7); // OK
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(p, p + 8);
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(p - 1, p);
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(p, p - 1);
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(p - 1, p + 8);
+
+  p = &large_global[0];
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(p - 1, p);
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(p, p - 1);
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(p, &global1[0]);
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(p, &small_global[0]);
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(p, 0);
+
+  // Stack variables.
+  char stack1, stack2;
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(&stack1, &stack2);
+
+  // Mixtures.
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(heap1, &stack1);
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  foo(heap1, &global1[0]);
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  foo(&stack1, &global1[0]);
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
+  foo(&stack1, 0);
+
+  free(heap1);
+
+  return 0;
+}