diff -r 000000000000 -r c2f4c0285180 gclib/mem.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gclib/mem.c	Tue Jan 24 23:54:05 2012 +0000
@@ -0,0 +1,54 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <gclib/mem.h>
+
+/*
+ * A memory allocator that aborts on failure (so that the caller never
+ * needs to handle out of memory, which we assume is very unlikely to
+ * happen under normal circumstances on any modern machine).
+ */
+void *mem_alloc(size_t nmemb,size_t size)
+{
+    void *ptr=malloc(nmemb*size);
+    if (!ptr)
+    {
+	fprintf(stderr,
+	  "Not enough memory to allocate %lu elements of %lu bytes.\n",
+	  (unsigned long)nmemb,(unsigned long)size);
+	abort();
+    }
+    return ptr;
+}
+
+/*
+ * As mem_new, but new memory is cleared to zero.
+ */
+void *mem_alloc0(size_t nmemb,size_t size)
+{
+    void *ptr=calloc(nmemb,size);
+    if (!ptr)
+    {
+	fprintf(stderr,
+	  "Not enough memory to allocate %lu elements of %lu bytes.\n",
+	  (unsigned long)nmemb,(unsigned long)size);
+	abort();
+    }
+    return ptr;
+}
+
+/*
+ * Grow or shrink a memory block, aborting on failure.
+ */
+void *mem_realloc(void *ptr,size_t nmemb,size_t size)
+{
+    ptr=realloc(ptr,nmemb*size);
+    if (!ptr)
+    {
+	fprintf(stderr,
+	  "Not enough memory to allocate %lu elements of %lu bytes.\n",
+	  (unsigned long)nmemb,(unsigned long)size);
+	abort();
+    }
+    return ptr;
+}