Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/compiler-rt/test/sanitizer_common/TestCases/scanf-ldbl.c

@@ -0,0 +1,13 @@
+// RUN: %clang %s -o %t && %run %t 2>&1
+
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+
+int main(int argc, char **argv) {
+  long double ld;
+  memset(&ld, 255, sizeof ld);
+  sscanf("4.0", "%Lf", &ld);
+  assert(ld == 4.0);
+  return 0;
+}