Add fz_malloc_struct, and make code use it.

The new fz_malloc_struct(A,B) macro allocates sizeof(B) bytes using
fz_malloc, and then passes the resultant pointer to Memento_label
to label it with "B".

This costs nothing in non-memento builds, but gives much nicer
listings of leaked blocks when memento is enabled.

1 files changed, 3 insertions, 0 deletions

diff --git a/fitz/fitz.h b/fitz/fitz.h
index 4989b22f..b4c3cd15 100644
--- a/fitz/fitz.h
+++ b/fitz/fitz.h
@@ -189,6 +189,9 @@ void *fz_calloc_no_throw(fz_context *ctx, unsigned int count, unsigned int size)
 void *fz_resize_array_no_throw(fz_context *ctx, void *p, unsigned int count, unsigned int size);
 char *fz_strdup_no_throw(fz_context *ctx, char *s);
 
+#define fz_malloc_struct(CTX, STRUCT) \
+	Memento_label(fz_malloc(CTX,sizeof(STRUCT)), #STRUCT)
+
 
 /* runtime (hah!) test for endian-ness */
 int fz_is_big_endian(void);