Add tests for zero-sized allocations.
POSIX lets us return null and set errno, but that would be annoying and
surprising.
Bug: http://b/27101951
Change-Id: I320a8a14884abb806a8d30e3e6cf1ede28b49335
diff --git a/tests/malloc_test.cpp b/tests/malloc_test.cpp
index 5af5a6f..d3a9d01 100644
--- a/tests/malloc_test.cpp
+++ b/tests/malloc_test.cpp
@@ -391,3 +391,42 @@
free(zero_mem);
}
}
+
+TEST(malloc, malloc_0) {
+ void* p = malloc(0);
+ ASSERT_TRUE(p != nullptr);
+ free(p);
+}
+
+TEST(malloc, calloc_0_0) {
+ void* p = calloc(0, 0);
+ ASSERT_TRUE(p != nullptr);
+ free(p);
+}
+
+TEST(malloc, calloc_0_1) {
+ void* p = calloc(0, 1);
+ ASSERT_TRUE(p != nullptr);
+ free(p);
+}
+
+TEST(malloc, calloc_1_0) {
+ void* p = calloc(1, 0);
+ ASSERT_TRUE(p != nullptr);
+ free(p);
+}
+
+TEST(malloc, realloc_nullptr_0) {
+ // realloc(nullptr, size) is actually malloc(size).
+ void* p = realloc(nullptr, 0);
+ ASSERT_TRUE(p != nullptr);
+ free(p);
+}
+
+TEST(malloc, realloc_0) {
+ void* p = malloc(1024);
+ ASSERT_TRUE(p != nullptr);
+ // realloc(p, 0) is actually free(p).
+ void* p2 = realloc(p, 0);
+ ASSERT_TRUE(p2 == nullptr);
+}