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[cairo-png] Call png_set_filler() before png_read_update_info().

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Otherwise libpng gets very confused and we start scribbling over invalid
memory whilst reading in the PNG.
This commit is contained in:
Chris Wilson 2008-04-21 20:15:28 +01:00
parent 20b1b33c0f
commit 63bba7e60c
1 changed files with 2 additions and 1 deletions
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3
src/cairo-png.c
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@ -504,6 +504,8 @@ read_png (png_rw_ptr read_func,
if (interlace != PNG_INTERLACE_NONE)
png_set_interlace_handling (png);
png_set_filler (png, 0xff, PNG_FILLER_AFTER);
/* recheck header after setting EXPAND options */
png_read_update_info (png, info);
png_get_IHDR (png, info,
@ -530,7 +532,6 @@ read_png (png_rw_ptr read_func,
case PNG_COLOR_TYPE_RGB:
format = CAIRO_FORMAT_RGB24;
png_set_read_user_transform_fn (png, convert_bytes_to_data);
png_set_filler (png, 0xff, PNG_FILLER_AFTER);
break;
}