1 files changed, 59 insertions, 0 deletions
diff --git a/reallocarray.c b/reallocarray.c
new file mode 100644
index 0000000..640e84a
--- /dev/null
+++ b/reallocarray.c
@@ -0,0 +1,59 @@
+/* See LICENSE file for copyright and license details. */
+#include "libsimple.h"
+#ifndef TEST
+
+
+extern inline void *libsimple_reallocarray(void *, size_t, size_t);
+
+
+#else
+#include "test.h"
+
+int
+main(void)
+{
+	struct allocinfo *info;
+	void *ptr, *old;
+
+	assert((ptr = libsimple_reallocarray(NULL, 1, 5)));
+	if (have_custom_malloc()) {
+		assert((info = get_allocinfo(ptr)));
+		assert(info->size == 5);
+		assert(!info->zeroed);
+		assert(!((uintptr_t)ptr % (uintptr_t)(info->alignment)));
+		info->refcount += 1;
+	}
+	stpcpy(ptr, "test");
+	assert((ptr = libsimple_reallocarray(old = ptr, 10, 10)));
+	assert(!strcmp(ptr, "test"));
+	if (have_custom_malloc()) {
+		assert((info = get_allocinfo(ptr)));
+		assert(info->size == 100);
+		assert(!info->zeroed);
+		assert(!((uintptr_t)ptr % (uintptr_t)(info->alignment)));
+		assert(ptr != old);
+		free(old);
+	}
+	free(ptr);
+
+	if (have_custom_malloc()) {
+		alloc_fail_in = 1;
+		assert(!libsimple_reallocarray(NULL, 1, 1) && errno == ENOMEM);
+		assert(!alloc_fail_in);
+	}
+
+#if defined(__GNUC__) && !defined(__clang)
+# pragma GCC diagnostic push
+# pragma GCC diagnostic ignored "-Walloc-size-larger-than="
+#endif
+
+	assert(!libsimple_reallocarray(NULL, SIZE_MAX, SIZE_MAX) && errno == ENOMEM);
+
+#if defined(__GNUC__) && !defined(__clang)
+# pragma GCC diagnostic pop
+#endif
+
+	return 0;
+}
+
+#endif