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| author | Glenn Randers-Pehrson <glennrp at users.sourceforge.net> | 2012-06-07 10:18:25 -0500 |
|---|---|---|
| committer | Glenn Randers-Pehrson <glennrp at users.sourceforge.net> | 2012-06-07 10:18:25 -0500 |
| commit | 905cc94e3dcaa11bead936f4a49d8d7f3636f05c (patch) | |
| tree | 49aacf90766bf87c8ced80a1c07d6ae30d6899f6 /pngtrans.c | |
| parent | 8f424b82701957e4ac19d4b0f84836f28bf5a6e5 (diff) | |
| download | libpng-905cc94e3dcaa11bead936f4a49d8d7f3636f05c.tar.gz | |
[libpng16] Don't check palette indexes if num_palette is 0 (as it can be in
MNG files).
Diffstat (limited to 'pngtrans.c')
| -rw-r--r-- | pngtrans.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/pngtrans.c b/pngtrans.c index 1d4bf6122..bbf97a642 100644 --- a/pngtrans.c +++ b/pngtrans.c @@ -625,7 +625,8 @@ png_do_bgr(png_row_infop row_info, png_bytep row) void /* PRIVATE */ png_do_check_palette_indexes(png_structrp png_ptr, png_row_infop row_info) { - if (png_ptr->num_palette < (1 << row_info->bit_depth)) + if (png_ptr->num_palette < (1 << row_info->bit_depth) && + png_ptr->num_palette > 0) /* num_palette can be 0 in MNG files */ { /* Calculations moved outside switch in an attempt to stop different * compiler warnings. 'padding' is in *bits* within the last byte, it is |