From 09e94a651dd8b9f205eeb626d59e3e468f2ceb7aee2a87299cc6869b2e8f1952 Mon Sep 17 00:00:00 2001
From: ADAM David Alan Martin <adam@recursive.engineer>
Date: Sat, 2 Aug 2025 02:12:52 -0400
Subject: [PATCH] PNG code uses setjmp/longjmp.  Leaving it alone for now.

---
 src/dpng.hh | 3 ++-
 src/gif.cc  | 3 ---
 src/png.cc  | 8 ++++----
 3 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/src/dpng.hh b/src/dpng.hh
index 0f35287..cd19f21 100644
--- a/src/dpng.hh
+++ b/src/dpng.hh
@@ -11,8 +11,9 @@ extern "C" {
 #include "image.hh"
 #include "cache.hh"
 
+struct DilloPng;
 
-void *a_Png_new(DilloImage *Image, DilloUrl *url, int version);
+DilloPng *a_Png_new(DilloImage *Image, DilloUrl *url, int version);
 void a_Png_callback(int Op, CacheClient_t *Client);
 const char *a_Png_version(void);
 
diff --git a/src/gif.cc b/src/gif.cc
index bf9ab40..d691153 100644
--- a/src/gif.cc
+++ b/src/gif.cc
@@ -85,8 +85,6 @@
 
 
 struct DilloGif {
-   ~DilloGif();
-
    DilloImage *Image;
    DilloUrl *url;
    int version;
@@ -182,7 +180,6 @@ DilloGif *a_Gif_new(DilloImage *Image, DilloUrl *url, int version)
 /**
  * Free the gif-decoding data structure.
  */
-DilloGif::~DilloGif() {}
 
 /**
  * This function is a cache client, it receives data from the cache
diff --git a/src/png.cc b/src/png.cc
index d52cacb..3ef0948 100644
--- a/src/png.cc
+++ b/src/png.cc
@@ -62,7 +62,7 @@ static char *prog_state_name[] =
  * png_ptr and into_ptr so the FSM is very simple - much simpler than the
  * ones for XBM and PNM are.
  */
-typedef struct {
+struct DilloPng {
    DilloImage *Image;           /**< Image meta data */
    DilloUrl *url;               /**< Primary Key for the dicache */
    int version;                 /**< Secondary Key for the dicache */
@@ -97,7 +97,7 @@ typedef struct {
 
    uchar_t *linebuf;            /**< o/p raster data */
 
-} DilloPng;
+};
 
 #define DATASIZE  (png->ipbufsize - png->ipbufstart)
 
@@ -446,7 +446,7 @@ const char *a_Png_version(void)
 /**
  * Create the image state data that must be kept between calls
  */
-void *a_Png_new(DilloImage *Image, DilloUrl *url, int version)
+DilloPng *a_Png_new(DilloImage *Image, DilloUrl *url, int version)
 {
    DilloPng *png = dNew0(DilloPng, 1);
    _MSG("a_Png_new: png=%p\n", png);
@@ -470,7 +470,7 @@ void *a_Png_new(DilloImage *Image, DilloUrl *url, int version)
 
 #else /* ENABLE_PNG */
 
-void *a_Png_new() { return 0; }
+DilloPng *a_Png_new() { return 0; }
 void a_Png_callback() { return; }
 const char *a_Png_version(void) { return 0; }