vendor/compiler-rt/compiler-rt-r224034

1 files changed, 25 insertions, 0 deletions

diff --git a/test/asan/TestCases/printf-5.c b/test/asan/TestCases/printf-5.c
new file mode 100644
index 0000000000000..ac2c1c4b29979
--- /dev/null
+++ b/test/asan/TestCases/printf-5.c
@@ -0,0 +1,25 @@
+// RUN: %clang_asan -O2 %s -o %t
+// We need replace_intrin=0 to avoid reporting errors in memcpy.
+// RUN: env ASAN_OPTIONS=replace_intrin=0:check_printf=1 not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
+// RUN: env ASAN_OPTIONS=replace_intrin=0:check_printf=0 %run %t 2>&1 | FileCheck --check-prefix=CHECK-OFF %s
+// RUN: env ASAN_OPTIONS=replace_intrin=0 not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
+
+// FIXME: printf is not intercepted on Windows yet.
+// XFAIL: win32
+
+#include <stdio.h>
+#include <string.h>
+int main() {
+  volatile char c = '0';
+  volatile int x = 12;
+  volatile float f = 1.239;
+  volatile char s[] = "34";
+  volatile char fmt[2];
+  memcpy((char *)fmt, "%c %d %f %s\n", sizeof(fmt));
+  printf((char *)fmt, c, x, f, s);
+  return 0;
+  // Check that format string is sanitized.
+  // CHECK-ON: stack-buffer-overflow
+  // CHECK-ON-NOT: 0 12 1.239 34
+  // CHECK-OFF: 0
+}