--- /dev/null
+
+#include <stdlib.h>
+#include <limits.h>
+#include <stdio.h>
+
+#ifndef GC_IGNORE_WARN
+ /* Ignore misleading "Out of Memory!" warning (which is printed on */
+ /* every GC_MALLOC(LONG_MAX) call) by defining this macro before */
+ /* "gc.h" inclusion. */
+# define GC_IGNORE_WARN
+#endif
+
+#include "gc.h"
+
+/*
+ * Check that very large allocation requests fail. "Success" would usually
+ * indicate that the size was somehow converted to a negative
+ * number. Clients shouldn't do this, but we should fail in the
+ * expected manner.
+ */
+
+int main(void)
+{
+ GC_INIT();
+
+ GC_set_max_heap_size(100*1024*1024);
+ /* Otherwise heap expansion aborts when deallocating large block. */
+ /* That's OK. We test this corner case mostly to make sure that */
+ /* it fails predictably. */
+ GC_expand_hp(1024*1024*5);
+ if (sizeof(long) == sizeof(void *)) {
+ void *r = GC_MALLOC(LONG_MAX-1024);
+ if (0 != r) {
+ fprintf(stderr,
+ "Size LONG_MAX-1024 allocation unexpectedly succeeded\n");
+ exit(1);
+ }
+ r = GC_MALLOC(LONG_MAX);
+ if (0 != r) {
+ fprintf(stderr,
+ "Size LONG_MAX allocation unexpectedly succeeded\n");
+ exit(1);
+ }
+ r = GC_MALLOC((size_t)LONG_MAX + 1024);
+ if (0 != r) {
+ fprintf(stderr,
+ "Size LONG_MAX+1024 allocation unexpectedly succeeded\n");
+ exit(1);
+ }
+ }
+ return 0;
+}