From fffe12a95ef4b9b1d265e30772d28423c294dba6 Mon Sep 17 00:00:00 2001
From: Packit Service <user-cont-team+packit-service@redhat.com>
Date: Dec 10 2020 03:16:17 +0000
Subject: Apply patch plotutils-2.6-png15.patch


patch_name: plotutils-2.6-png15.patch
present_in_specfile: true

---

diff --git a/libplot/z_write.c b/libplot/z_write.c
index d76a7cc..6479ded 100644
--- a/libplot/z_write.c
+++ b/libplot/z_write.c
@@ -164,7 +164,11 @@ _pl_z_maybe_output_image (S___(Plotter *_plotter))
     }
 
   /* cleanup after libpng errors (error handler does a longjmp) */
+#if PNG_LIBPNG_VER_MAJOR >= 1 && PNG_LIBPNG_VER_MINOR >= 4
+  if (setjmp (png_jmpbuf(png_ptr)))
+#else
   if (setjmp (png_ptr->jmpbuf))
+#endif
     {
       png_destroy_write_struct (&png_ptr, (png_info **)NULL);
       return -1;
@@ -444,7 +448,11 @@ _our_error_fn_stdio (png_struct *png_ptr, const char *data)
 #endif
     }
 
+#if PNG_LIBPNG_VER_MAJOR >= 1 && PNG_LIBPNG_VER_MINOR >= 4
+  longjmp (png_jmpbuf(png_ptr), 1);
+#else
   longjmp (png_ptr->jmpbuf, 1);
+#endif
 }
 
 static void 
@@ -515,7 +523,11 @@ _our_error_fn_stream (png_struct *png_ptr, const char *data)
 #endif
     }
 
+#if PNG_LIBPNG_VER_MAJOR >= 1 && PNG_LIBPNG_VER_MINOR >= 4
+  longjmp (png_jmpbuf(png_ptr), 1);
+#else
   longjmp (png_ptr->jmpbuf, 1);
+#endif
 }
 
 static void