ext/gd: pack imageloadfont short-read test in native byte order#22416
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iliaal wants to merge 1 commit into
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ext/gd: pack imageloadfont short-read test in native byte order#22416iliaal wants to merge 1 commit into
iliaal wants to merge 1 commit into
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@iliaal I would recommend to enable CI for PPC64 (look at the labels) since this is where the issue was from. |
imageloadfont_short_read packed the font header with pack('V4', ...)
(little-endian), but imageloadfont() reads the header as native-endian
ints. On big-endian hosts (PPC64 nightly) the byte-swapped values
overflow the INT_MAX guard before the FLIPWORD fallback runs, so the
font is rejected and the test fails. Pack the fields with 'i' to keep
the header valid regardless of host endianness.
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took a minute to figure out enabling ppc64 test, looks like fix is working there |
devnexen
approved these changes
Jun 24, 2026
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Thanks @iliaal! |
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The imageloadfont_short_read test packed the font header with
pack('V4', ...)(little-endian), butimageloadfont()reads it as native-endian ints, so on big-endian hosts the byte-swapped values trip the INT_MAX overflow guard before the FLIPWORD fallback and the font is rejected. Packing withpack('i4', ...)keeps the header valid on both, fixing the PPC64 nightly failure.