[svn-r26327] Added public API functions that expose the C library's memory allocator

for use in filter functions that need to allocate or resize buffers.
Intended for use with filter plugins, particularly on Windows, where
C runtime (CRT) issues can cause problems.

Fixes: HDFFV-9100

tested on: jam (minor, localized change)

1 files changed, 68 insertions, 0 deletions

diff --git a/test/tmisc.c b/test/tmisc.c
index cac6b04..80f4fc7 100644
--- a/test/tmisc.c
+++ b/test/tmisc.c
@@ -5304,6 +5304,73 @@ test_misc31(void)
 
 
 /****************************************************************
+ *
+ *  test_misc32(): Simple test of filter memory allocation
+ *                 functions.
+ *
+ ***************************************************************/
+static void
+test_misc32(void)
+{
+    void *buffer;
+    void *resized;
+    size_t size;
+
+    /* Output message about test being performed */
+    MESSAGE(5, ("Edge case test of filter memory allocation functions\n"));
+
+    /* Test that the filter memory allocation functions behave correctly
+     * at edge cases.
+     */
+
+    /* FREE */
+
+    /* Test freeing a NULL pointer.
+     * No real confirmation check here, but Valgrind will confirm no
+     * shenanigans.
+     */
+    buffer = NULL;
+    H5free_memory(buffer);
+
+    /* ALLOCATE */
+
+    /* Size zero returns NULL.
+     * Also checks that a size of zero and setting the buffer clear flag
+     * to TRUE can be used together.
+     *
+     * Note that we have asserts in the code, so only check when NDEBUG
+     * is defined.
+     */
+#ifdef NDEBUG
+    buffer = H5allocate_memory(0, FALSE);
+    CHECK_PTR_NULL(buffer, "H5allocate_memory"); /*BAD*/
+    buffer = H5allocate_memory(0, TRUE);
+    CHECK_PTR_NULL(buffer, "H5allocate_memory"); /*BAD*/a
+#endif /* NDEBUG */
+
+    /* RESIZE */
+
+    /* Size zero returns NULL. Valgrind will confirm buffer is freed. */
+    size = 1024;
+    buffer = H5allocate_memory(size, TRUE);
+    resized = H5resize_memory(buffer, 0);
+    CHECK_PTR_NULL(resized, "H5resize_memory");
+
+    /* NULL input pointer returns new buffer */
+    resized = H5resize_memory(NULL, 1024);
+    CHECK_PTR(resized, "H5resize_memory");
+    H5free_memory(resized);
+
+    /* NULL input pointer and size zero returns NULL */
+#ifdef NDEBUG
+    resized = H5resize_memory(NULL, 0);
+    CHECK_PTR_NULL(resized, "H5resize_memory"); /*BAD*/
+#endif /* NDEBUG */
+    
+} /* end test_misc32() */
+
+
+/****************************************************************
 **
 **  test_misc(): Main misc. test routine.
 **
@@ -5349,6 +5416,7 @@ test_misc(void)
     test_misc29();      /* Test that speculative metadata reads are handled correctly */
     test_misc30();      /* Exercise local heap loading bug where free lists were getting dropped */
     test_misc31();      /* Test Reentering library through deprecated routines after H5close() */
+    test_misc32();      /* Test filter memory allocation functions */
 
 } /* test_misc() */