diff options
| -rw-r--r-- | ext/opcache/jit/zend_jit_x86.dasc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/ext/opcache/jit/zend_jit_x86.dasc b/ext/opcache/jit/zend_jit_x86.dasc index 5c827f4b99..107e2c5de8 100644 --- a/ext/opcache/jit/zend_jit_x86.dasc +++ b/ext/opcache/jit/zend_jit_x86.dasc @@ -1613,6 +1613,7 @@ static uint32_t ones32(uint32_t x) static uint32_t floor_log2(uint32_t x) { + ZEND_ASSERT(x != 0); x |= (x >> 1); x |= (x >> 2); x |= (x >> 4); @@ -1623,7 +1624,7 @@ static uint32_t floor_log2(uint32_t x) static zend_bool is_power_of_two(uint32_t x) { - return !(x & (x - 1)); + return !(x & (x - 1)) && x != 0; } static zend_bool has_concrete_type(uint32_t value_type) |