Index: camlimages-3.0.2/src/pngread.c
===================================================================
--- camlimages-3.0.2.orig/src/pngread.c
+++ camlimages-3.0.2/src/pngread.c
@@ -69,7 +69,7 @@ value read_png_file_as_rgb24( name )
   }
 
   /* error handling */
-  if (setjmp(png_ptr->jmpbuf)) {
+  if (setjmp(png_jmpbuf(png_ptr))) {
     /* Free all of the memory associated with the png_ptr and info_ptr */
     png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
     fclose(fp);
@@ -134,7 +134,7 @@ value read_png_file_as_rgb24( name )
     png_set_rows(png_ptr, info_ptr, row_pointers);
 
     /* Later, we can return something */
-    if (setjmp(png_ptr->jmpbuf)) {
+    if (setjmp(png_jmpbuf(png_ptr))) {
       /* Free all of the memory associated with the png_ptr and info_ptr */
       png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
       fclose(fp);
@@ -243,7 +243,7 @@ value read_png_file( name )
   }
 
   /* error handling */
-  if (setjmp(png_ptr->jmpbuf)) {
+  if (setjmp(png_jmpbuf(png_ptr))) {
     /* Free all of the memory associated with the png_ptr and info_ptr */
     png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
     fclose(fp);
@@ -302,7 +302,7 @@ value read_png_file( name )
     png_set_rows(png_ptr, info_ptr, row_pointers);
 
     /* Later, we can return something */
-    if (setjmp(png_ptr->jmpbuf)) {
+    if (setjmp(png_jmpbuf(png_ptr))) {
       /* Free all of the memory associated with the png_ptr and info_ptr */
       png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
       fclose(fp);
Index: camlimages-3.0.2/src/pngwrite.c
===================================================================
--- camlimages-3.0.2.orig/src/pngwrite.c
+++ camlimages-3.0.2/src/pngwrite.c
@@ -62,7 +62,7 @@ value write_png_file_rgb( name, buffer,
   }
 
   /* error handling */
-  if (setjmp(png_ptr->jmpbuf)) {
+  if (setjmp(png_jmpbuf(png_ptr))) {
     /* Free all of the memory associated with the png_ptr and info_ptr */
     png_destroy_write_struct(&png_ptr, &info_ptr);
     fclose(fp);
@@ -171,7 +171,7 @@ value write_png_file_index( name, buffer
   }
 
   /* error handling */
-  if (setjmp(png_ptr->jmpbuf)) {
+  if (setjmp(png_jmpbuf(png_ptr))) {
     /* Free all of the memory associated with the png_ptr and info_ptr */
     png_destroy_write_struct(&png_ptr, &info_ptr);
     fclose(fp);