https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14686
--- Comment #2 from Peter Wu <pe...@lekensteyn.nl> ---
To reproduce this, apply this patch:
diff --git a/wsutil/buffer.c b/wsutil/buffer.c
index bbe0ed11d2..317836196b 100644
--- a/wsutil/buffer.c
+++ b/wsutil/buffer.c
@@ -63,6 +63,21 @@ ws_buffer_assure_space(Buffer* buffer, gsize space)
gsize space_used;
gboolean space_at_beginning;
+#if 1
+ /* Exact-size buffer for memory debugging. */
+ if (buffer->start > 0) {
+ space_used = buffer->first_free - buffer->start;
+ memmove(buffer->data, buffer->data + buffer->start,
space_used);
+ buffer->start = 0;
+ buffer->first_free = space_used;
+ }
+ if (space != buffer->allocated) {
+ buffer->allocated = space;
+ buffer->data = (guint8*)g_realloc(buffer->data,
buffer->allocated);
+ return;
+ }
+#endif
+
/* If we've got the space already, good! */
if (space <= available_at_end) {
return;
--
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