commit 59a68c83f0ead9bac34afecba6989b71fb4902bd
author John Bowler <jbowler@acm.org> Tue Jan 30 14:00:45 2024 -0800
committer Cosmin Truta <ctruta@gmail.com> Wed Jan 31 15:17:49 2024 +0200
tree 6d9774930b8b79e6ba413500e15cc056b1468c87
parent 3bd304e5f456324a3fa884af6c0e6605c49630fc

Fix contrib/conftest/pngcp.dfa

This was broken by the corrections to the 'palette max' handling; if
that is disabled the test of num_palette_max must be removed in pnread.c

Signed-off-by: John Bowler <jbowler@acm.org>

pngread.c

diff --git a/pngread.c b/pngread.c
index 008a418..07a39df 100644
--- a/pngread.c
+++ b/pngread.c
@@ -568,7 +568,11 @@
 #endif
 
 #ifdef PNG_READ_TRANSFORMS_SUPPORTED
-   if (png_ptr->transformations || png_ptr->num_palette_max >= 0)
+   if (png_ptr->transformations
+#     ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
+         || png_ptr->num_palette_max >= 0
+#     endif
+      )
       png_do_read_transformations(png_ptr, &row_info);
 #endif