vendor/clang/clang-r108243

1 files changed, 44 insertions, 0 deletions

diff --git a/test/Analysis/malloc.c b/test/Analysis/malloc.c
index fe24bc19e61c..b4c1314b34cf 100644
--- a/test/Analysis/malloc.c
+++ b/test/Analysis/malloc.c
@@ -75,5 +75,49 @@ void PR6123() {
 void PR7217() {
   int *buf = malloc(2); // expected-warning{{Cast a region whose size is not a multiple of the destination type size.}}
   buf[1] = 'c'; // not crash
+}
+
+void mallocCastToVoid() {
+  void *p = malloc(2);
+  const void *cp = p; // not crash
+  free(p);
+}
+
+void mallocCastToFP() {
+  void *p = malloc(2);
+  void (*fp)() = p; // not crash
+  free(p);
+}
+
+// This tests that malloc() buffers are undefined by default
+char mallocGarbage () {
+	char *buf = malloc(2);
+	char result = buf[1]; // expected-warning{{undefined}}
+	free(buf);
+	return result;
+}
+
+// This tests that calloc() buffers need to be freed
+void callocNoFree () {
+  char *buf = calloc(2,2);
+  return; // expected-warning{{never released}}
+}
+
+// These test that calloc() buffers are zeroed by default
+char callocZeroesGood () {
+	char *buf = calloc(2,2);
+	char result = buf[3]; // no-warning
+	if (buf[1] == 0) {
+	  free(buf);
+	}
+	return result; // no-warning
+}
 
+char callocZeroesBad () {
+	char *buf = calloc(2,2);
+	char result = buf[3]; // no-warning
+	if (buf[1] != 0) {
+	  free(buf);
+	}
+	return result; // expected-warning{{never released}}
 }