It turns out that realloc(ptr, 0) --> free(ptr) is not actually required by the C standard (whereas realloc(NULL, size) --> malloc(size) is).

Therefore, explicitly model the behaviour expected by our libraries (that realloc of 0 size is equivalent to free).

svn path=/trunk/netsurf/; revision=10524

1 files changed, 5 insertions, 0 deletions

diff --git a/framebuffer/gui.c b/framebuffer/gui.c
index 287652d6e..10a2b329d 100644
--- a/framebuffer/gui.c
+++ b/framebuffer/gui.c
@@ -323,6 +323,11 @@ fb_browser_window_redraw(fbtk_widget_t *root, fbtk_widget_t *widget, void *pw)
 
 static void *myrealloc(void *ptr, size_t len, void *pw)
 {
+	if (len == 0) {
+		free(ptr);
+		return NULL;
+	}
+
 	return realloc(ptr, len);
 }