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zend_alloc trailing 1 calculation helper ZEND_ATTRIBUTE_CONST addition. (#13874)

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David CARLIER 2024-04-03 13:46:07 +01:00 committed by GitHub
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commit 7a3516cca5
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Zend/zend_alloc.c
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@ -541,7 +541,7 @@ static void *zend_mm_mmap(size_t size)
/***********/
/* number of trailing set (1) bits */
static zend_always_inline int zend_mm_bitset_nts(zend_mm_bitset bitset)
ZEND_ATTRIBUTE_CONST static zend_always_inline int zend_mm_bitset_nts(zend_mm_bitset bitset)
{
#if (defined(__GNUC__) || __has_builtin(__builtin_ctzl)) && SIZEOF_ZEND_LONG == SIZEOF_LONG && defined(PHP_HAVE_BUILTIN_CTZL)
return __builtin_ctzl(~bitset);