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fix: stbi__parse_png_file() seek to the byte just after the IEND chunk #1751

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fix: stbi__parse_png_file() seek to the byte just after the IEND chunk #1751

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6 changes: 5 additions & 1 deletion stb_image.h
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Original file line number Diff line number Diff line change
Expand Up @@ -101,7 +101,7 @@ RECENT REVISION HISTORY:
Marc LeBlanc David Woo Guillaume George Martins Mozeiko
Christpher Lloyd Jerry Jansson Joseph Thomson Blazej Dariusz Roszkowski
Phil Jordan Dave Moore Roy Eltham
Hayaki Saito Nathan Reed Won Chun
Hayaki Saito Nathan Reed Won Chun Thomas Bernard
Luke Graham Johan Duparc Nick Verigakis the Horde3D community
Thomas Ruf Ronny Chevalier github:rlyeh
Janez Zemva John Bartholomew Michal Cichon github:romigrou
Expand Down Expand Up @@ -5235,6 +5235,10 @@ static int stbi__parse_png_file(stbi__png *z, int scan, int req_comp)
STBI_FREE(z->expanded); z->expanded = NULL;
// end of PNG chunk, read and skip CRC
stbi__get32be(s);
if (s->io.skip && s->img_buffer_end > s->img_buffer) {
// rewind the additional bytes that have been read to the buffer
(s->io.skip)(s->io_user_data, (int)(s->img_buffer - s->img_buffer_end));
}
return 1;
}

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