make sure this compiles with aix

[rrdtool.git] / src / pngsize.c

diff --git a/src/pngsize.c b/src/pngsize.c
index 18e89c5..59e2003 100644 (file)
--- a/src/pngsize.c
+++ b/src/pngsize.c
@@ -1,5 +1,5 @@
 /*****************************************************************************
- * RRDtool 1.2.23  Copyright by Tobi Oetiker, 1997-2007
+ * RRDtool 1.2.99907080300  Copyright by Tobi Oetiker, 1997-2007
  *****************************************************************************
  * pngsize.c  determine the size of a PNG image
  *****************************************************************************/
@@ -31,10 +31,14 @@ int PngSize(
 #undef jmpbuf
 #endif
 
-    if (setjmp(png_read_ptr->jmpbuf)) {
-        png_destroy_read_struct(&png_read_ptr, &info_ptr, (png_infopp) NULL);
-        return 0;
-    }
+#ifndef png_jmpbuf
+#  define png_jmpbuf(png_ptr)   ((png_ptr)->jmpbuf)
+#endif
+
+  if (setjmp(png_jmpbuf(png_read_ptr))){
+    png_destroy_read_struct(&png_read_ptr, &info_ptr, (png_infopp)NULL);
+    return 0;
+  }
 
     png_init_io(png_read_ptr, fd);
     png_read_info(png_read_ptr, info_ptr);