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authorEric Andersen <andersen@codepoet.org>2002-08-14 02:38:04 +0000
committerEric Andersen <andersen@codepoet.org>2002-08-14 02:38:04 +0000
commit8c2c5e549eec9eec63c85e2d21a53a71a369e557 (patch)
treea6f09ae74a425d493fbab0d4e453da7db956c9ab /test/stdlib/mallocbug.c
parent8966b4965d7d6ae29d957950d064382c79669246 (diff)
Move all malloc tests under test/malloc/
Diffstat (limited to 'test/stdlib/mallocbug.c')
-rw-r--r--test/stdlib/mallocbug.c67
1 files changed, 0 insertions, 67 deletions
diff --git a/test/stdlib/mallocbug.c b/test/stdlib/mallocbug.c
deleted file mode 100644
index 84a638795..000000000
--- a/test/stdlib/mallocbug.c
+++ /dev/null
@@ -1,67 +0,0 @@
-/* Reproduce a GNU malloc bug. */
-#include <malloc.h>
-#include <stdio.h>
-#include <string.h>
-
-#define size_t unsigned int
-
-int
-main (int argc, char *argv[])
-{
- char *dummy0;
- char *dummy1;
- char *fill_info_table1;
- char *over_top;
- size_t over_top_size = 0x3000;
- char *over_top_dup;
- size_t over_top_dup_size = 0x7000;
- char *x;
- size_t i;
-
- /* Here's what memory is supposed to look like (hex):
- size contents
- 3000 original_info_table, later fill_info_table1
- 3fa000 dummy0
- 3fa000 dummy1
- 6000 info_table_2
- 3000 over_top
-
- */
- /* mem: original_info_table */
- dummy0 = malloc (0x3fa000);
- /* mem: original_info_table, dummy0 */
- dummy1 = malloc (0x3fa000);
- /* mem: free, dummy0, dummy1, info_table_2 */
- fill_info_table1 = malloc (0x3000);
- /* mem: fill_info_table1, dummy0, dummy1, info_table_2 */
-
- x = malloc (0x1000);
- free (x);
- /* mem: fill_info_table1, dummy0, dummy1, info_table_2, freexx */
-
- /* This is what loses; info_table_2 and freexx get combined unbeknownst
- to mmalloc, and mmalloc puts over_top in a section of memory which
- is on the free list as part of another block (where info_table_2 had
- been). */
- over_top = malloc (over_top_size);
- over_top_dup = malloc (over_top_dup_size);
- memset (over_top, 0, over_top_size);
- memset (over_top_dup, 1, over_top_dup_size);
-
- for (i = 0; i < over_top_size; ++i)
- if (over_top[i] != 0)
- {
- printf ("FAIL: malloc expands info table\n");
- return 0;
- }
-
- for (i = 0; i < over_top_dup_size; ++i)
- if (over_top_dup[i] != 1)
- {
- printf ("FAIL: malloc expands info table\n");
- return 0;
- }
-
- printf ("PASS: malloc expands info table\n");
- return 0;
-}