X-Git-Url: http://wien.tomnetworks.com/gitweb/?p=hs-boehmgc.git;a=blobdiff_plain;f=gc-7.2%2Ftests%2Fhuge_test.c;fp=gc-7.2%2Ftests%2Fhuge_test.c;h=bde9836d5a8c48c02f9c68c925932739cdd1e255;hp=0000000000000000000000000000000000000000;hb=324587ba93dc77f37406d41fd2a20d0e0d94fb1d;hpb=2a4ea609491b225a1ceb06da70396e93916f137a

diff --git a/gc-7.2/tests/huge_test.c b/gc-7.2/tests/huge_test.c
new file mode 100644
index 0000000..bde9836
--- /dev/null
+++ b/gc-7.2/tests/huge_test.c
@@ -0,0 +1,52 @@
+
+#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;
+}