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Fix shifting signed values too far

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Signed shift of 31 for int and 63 for long is flagged as undefined
behavior by UBSan (-fsanitize=undefined) and seems to be indeed so
according to the standard.

The patch converts such cases to use unsigned.
This commit is contained in:
Stanislav Malyshev 2019-03-05 13:25:21 -08:00
parent 433fc322fc
commit f90a1a472a
4 changed files with 6 additions and 6 deletions
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4
Zend/zend_alloc.c
View File

@ -587,12 +587,12 @@ static zend_always_inline int zend_mm_bitset_is_set(zend_mm_bitset *bitset, int
static zend_always_inline void zend_mm_bitset_set_bit(zend_mm_bitset *bitset, int bit)
{
bitset[bit / ZEND_MM_BITSET_LEN] |= (Z_L(1) << (bit & (ZEND_MM_BITSET_LEN-1)));
bitset[bit / ZEND_MM_BITSET_LEN] |= (Z_UL(1) << (bit & (ZEND_MM_BITSET_LEN-1)));
}
static zend_always_inline void zend_mm_bitset_reset_bit(zend_mm_bitset *bitset, int bit)
{
bitset[bit / ZEND_MM_BITSET_LEN] &= ~(Z_L(1) << (bit & (ZEND_MM_BITSET_LEN-1)));
bitset[bit / ZEND_MM_BITSET_LEN] &= ~(Z_UL(1) << (bit & (ZEND_MM_BITSET_LEN-1)));
}
static zend_always_inline void zend_mm_bitset_set_range(zend_mm_bitset *bitset, int start, int len)

2
Zend/zend_compile.h
View File

@ -325,7 +325,7 @@ typedef struct _zend_oparray_context {
#define ZEND_ACC_DTOR (1 << 29) /* | X | | */
/* | | | */
/* op_array uses strict mode types | | | */
#define ZEND_ACC_STRICT_TYPES (1 << 31) /* | X | | */
#define ZEND_ACC_STRICT_TYPES (1U << 31) /* | X | | */
#define ZEND_ACC_PPP_MASK (ZEND_ACC_PUBLIC | ZEND_ACC_PROTECTED | ZEND_ACC_PRIVATE)

2
Zend/zend_cpuinfo.h
View File

@ -22,7 +22,7 @@
#include "zend.h"
#define ZEND_CPU_EBX_MASK (1<<30)
#define ZEND_CPU_EDX_MASK (1<<31)
#define ZEND_CPU_EDX_MASK (1U<<31)
typedef enum _zend_cpu_feature {
/* ECX */

4
ext/opcache/Optimizer/zend_cfg.h
View File

@ -35,7 +35,7 @@
#define ZEND_BB_LOOP_HEADER (1<<16)
#define ZEND_BB_IRREDUCIBLE_LOOP (1<<17)
#define ZEND_BB_REACHABLE (1<<31)
#define ZEND_BB_REACHABLE (1U<<31)
#define ZEND_BB_PROTECTED (ZEND_BB_ENTRY|ZEND_BB_RECV_ENTRY|ZEND_BB_TRY|ZEND_BB_CATCH|ZEND_BB_FINALLY|ZEND_BB_FINALLY_END|ZEND_BB_UNREACHABLE_FREE)
@ -92,7 +92,7 @@ typedef struct _zend_cfg {
} zend_cfg;
/* Build Flags */
#define ZEND_RT_CONSTANTS (1<<31)
#define ZEND_RT_CONSTANTS (1U<<31)
#define ZEND_CFG_STACKLESS (1<<30)
#define ZEND_SSA_DEBUG_LIVENESS (1<<29)
#define ZEND_SSA_DEBUG_PHI_PLACEMENT (1<<28)