Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/compiler-rt/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_opts=replace_intrin=0:check_printf=1 not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
+// RUN: %env_asan_opts=replace_intrin=0:check_printf=0 %run %t 2>&1 | FileCheck --check-prefix=CHECK-OFF %s
+// RUN: %env_asan_opts=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
+}