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-rw-r--r--reallocn.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/reallocn.c b/reallocn.c
new file mode 100644
index 0000000..75860bd
--- /dev/null
+++ b/reallocn.c
@@ -0,0 +1,50 @@
+/* See LICENSE file for copyright and license details. */
+#include "libsimple.h"
+#ifndef TEST
+
+
+extern inline void *libsimple_reallocn(void *, size_t, ...);
+
+
+#else
+#include "test.h"
+
+int
+main(void)
+{
+ struct allocinfo *info;
+ void *ptr, *old;
+
+ assert(!libsimple_reallocn(NULL, 0) && errno == EINVAL);
+ errno = 0;
+
+ assert(!libsimple_reallocn(NULL, SIZE_MAX, 2, 0) && errno == ENOMEM);
+ errno = 0;
+
+ assert((ptr = libsimple_reallocn(NULL, 5, 0)));
+ if (have_custom_malloc()) {
+ assert((info = get_allocinfo(ptr)));
+ assert(info->size == 5);
+ assert(!info->zeroed);
+ info->refcount += 1;
+ assert(!((uintptr_t)ptr % (uintptr_t)(info->alignment)));
+ }
+ stpcpy(ptr, "test");
+ assert((ptr = libsimple_reallocn(old = ptr, 10, 0)));
+ assert(!strcmp(ptr, "test"));
+ if (have_custom_malloc()) {
+ assert((info = get_allocinfo(ptr)));
+ assert(info->size == 10);
+ assert(!info->zeroed);
+ assert(!((uintptr_t)ptr % (uintptr_t)(info->alignment)));
+ assert(ptr != old);
+ free(old);
+ }
+ free(ptr);
+
+ assert(!errno);
+
+ return 0;
+}
+
+#endif