2 files changed, 25 insertions, 0 deletions
diff --git a/utils/utils.c b/utils/utils.c
index 175b33073..346fd5585 100644
--- a/utils/utils.c
+++ b/utils/utils.c
@@ -39,6 +39,19 @@
 #include "utils/utf8.h"
 #include "utils/utils.h"
 
+void *
+ns_realloc(void *ptr, size_t size, void *pw)
+{
+	(void)pw;
+	
+	if (ptr == NULL)
+		return size > 0 ? malloc(size) : NULL;
+	if (size == 0) {
+		free(ptr);
+		return NULL;
+	}
+	return realloc(ptr, size);
+}
 
 char * strip(char * const s)
 {
diff --git a/utils/utils.h b/utils/utils.h
index f58a2632b..5b06d9caa 100644
--- a/utils/utils.h
+++ b/utils/utils.h
@@ -78,6 +78,18 @@ typedef struct
 #define nsmkdir(dir, mode) mkdir((dir))
 #endif
 
+/**
+ * Private-word-capable realloc() implementation which
+ * behaves as most NS libraries expect in the face of
+ * realloc(ptr, 0) and realloc(NULL, size).
+ *
+ * \param ptr The pointer for reallocation
+ * \param size The number of bytes for the allocation
+ * \param pw A "private word" which we ignore.
+ * \return The new pointer (NULL on frees or errors)
+ */
+void *ns_realloc(void *ptr, size_t size, void *pw);
+
 char * strip(char * const s);
 int whitespace(const char * str);
 char * squash_whitespace(const char * s);