Merge "dsp.h: add WEBP_UBSAN_IGNORE_UNDEF"
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ea24e026aa
@ -102,6 +102,19 @@ extern "C" {
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#endif
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#endif
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// This macro prevents the undefined behavior sanitizer from reporting
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// failures. This is only meant to silence unaligned loads on platforms that
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// are known to support them.
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#define WEBP_UBSAN_IGNORE_UNDEF
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#if !defined(WEBP_FORCE_ALIGNED) && defined(__clang__) && \
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defined(__has_attribute)
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#if __has_attribute(no_sanitize)
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#undef WEBP_UBSAN_IGNORE_UNDEF
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#define WEBP_UBSAN_IGNORE_UNDEF \
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__attribute__((no_sanitize("undefined")))
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#endif
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#endif
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typedef enum {
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kSSE2,
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kSSE3,
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@ -55,7 +55,8 @@ void VP8LoadFinalBytes(VP8BitReader* const br);
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// Inlined critical functions
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// makes sure br->value_ has at least BITS bits worth of data
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static WEBP_INLINE void VP8LoadNewBytes(VP8BitReader* const br) {
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static WEBP_UBSAN_IGNORE_UNDEF WEBP_INLINE
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void VP8LoadNewBytes(VP8BitReader* const br) {
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assert(br != NULL && br->buf_ != NULL);
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// Read 'BITS' bits at a time if possible.
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if (br->buf_ < br->buf_max_) {
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