Fix GH-19666: imageconvolution() unexpected nan filter value.#22129
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devnexen wants to merge 1 commit into
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Fix GH-19666: imageconvolution() unexpected nan filter value.#22129devnexen wants to merge 1 commit into
devnexen wants to merge 1 commit into
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undefined behavior occurs during cast from float to int when the element of the filter matrix is -INF. Port the libgd clamp helper which treats non-finite accumulators as 0 (negative/NaN) or 255 (positive infinity) instead of bailing out, matching upstream libgd 81d7f2e.
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undefined behavior occurs during cast from float to int when the element of the filter matrix is -INF. Port the libgd clamp helper which treats non-finite accumulators as 0 (negative/NaN) or 255 (positive infinity) instead of bailing out, matching upstream libgd 81d7f2e.