Revert "Fix GH-10008: Narrowing occurred during type inference of ZEND_ADD_ARRAY_ELEMENT"

ndossche · ndossche · commit 643c4ba41790 · 2023-09-30T01:25:48.000+02:00
Although it passes CI on 8.1, it causes CI failures in the JIT on 8.2 and higher. See https://github.com/php/php-src/actions/runs/6357716718/job/17269225001 This reverts commit e72fc12.
diff --git a/NEWS b/NEWS
@@ -8,8 +8,6 @@ PHP                                                                        NEWS
   . Fixed bug GH-12215 (Module entry being overwritten causes type errors in
     ext/dom). (nielsdos)
   . Fixed bug GH-12273 (__builtin_cpu_init check). (Freaky)
-  . Fixed bug GH-10008 (Narrowing occurred during type inference of
-    ZEND_ADD_ARRAY_ELEMENT). (nielsdos, arnaud-lb)
 
 - CType:
   . Fixed bug GH-11997 (ctype_alnum 5 times slower in PHP 8.1 or greater).
diff --git a/Zend/Optimizer/zend_inference.c b/Zend/Optimizer/zend_inference.c
@@ -1926,21 +1926,6 @@ ZEND_API uint32_t zend_array_element_type(uint32_t t1, zend_uchar op_type, int w
 	return tmp;
 }
 
-static zend_always_inline uint32_t assign_long_dim_array_result_type(uint32_t arr_type)
-{
-	/* Rules:
-	 * HASH_ONLY      -> MAY_BE_ARRAY_NUMERIC_HASH
-	 * PACKED_ONLY    -> MAY_BE_ARRAY_NUMERIC_HASH | MAY_BE_ARRAY_PACKED (== MAY_BE_ARRAY_KEY_LONG)
-	 * HASH || PACKED -> MAY_BE_ARRAY_NUMERIC_HASH | MAY_BE_ARRAY_PACKED (== MAY_BE_ARRAY_KEY_LONG)
-	 * 0              -> MAY_BE_ARRAY_NUMERIC_HASH
-	 */
-	if (MAY_BE_PACKED(arr_type)) {
-		return MAY_BE_ARRAY_KEY_LONG;
-	} else {
-		return MAY_BE_ARRAY_NUMERIC_HASH;
-	}
-}
-
 static uint32_t assign_dim_array_result_type(
 		uint32_t arr_type, uint32_t dim_type, uint32_t value_type, zend_uchar dim_op_type) {
 	uint32_t tmp = 0;
@@ -1954,13 +1939,13 @@ static uint32_t assign_dim_array_result_type(
 			if (arr_type & (MAY_BE_UNDEF|MAY_BE_NULL|MAY_BE_FALSE)) {
 				tmp |= MAY_BE_ARRAY_PACKED;
 			}
-			tmp |= assign_long_dim_array_result_type(arr_type);
+			tmp |= MAY_BE_HASH_ONLY(arr_type) ? MAY_BE_ARRAY_NUMERIC_HASH : MAY_BE_ARRAY_KEY_LONG;
 		} else {
 			if (dim_type & (MAY_BE_LONG|MAY_BE_FALSE|MAY_BE_TRUE|MAY_BE_RESOURCE|MAY_BE_DOUBLE)) {
 				if (arr_type & (MAY_BE_UNDEF|MAY_BE_NULL|MAY_BE_FALSE)) {
 					tmp |= MAY_BE_ARRAY_PACKED;
 				}
-				tmp |= assign_long_dim_array_result_type(arr_type);
+				tmp |= MAY_BE_HASH_ONLY(arr_type) ? MAY_BE_ARRAY_NUMERIC_HASH : MAY_BE_ARRAY_KEY_LONG;
 			}
 			if (dim_type & MAY_BE_STRING) {
 				tmp |= MAY_BE_ARRAY_KEY_STRING;
@@ -1969,7 +1954,7 @@ static uint32_t assign_dim_array_result_type(
 					if (arr_type & (MAY_BE_UNDEF|MAY_BE_NULL|MAY_BE_FALSE)) {
 						tmp |= MAY_BE_ARRAY_PACKED;
 					}
-					tmp |= assign_long_dim_array_result_type(arr_type);
+					tmp |= MAY_BE_HASH_ONLY(arr_type) ? MAY_BE_ARRAY_NUMERIC_HASH : MAY_BE_ARRAY_KEY_LONG;
 				}
 			}
 			if (dim_type & (MAY_BE_UNDEF|MAY_BE_NULL)) {
@@ -3269,15 +3254,17 @@ static zend_always_inline int _zend_update_type_info(
 							key_type |= MAY_BE_ARRAY_PACKED;
 						}
 						if (t1 & MAY_BE_ARRAY) {
-							key_type |= assign_long_dim_array_result_type(t1);
+							key_type |= MAY_BE_HASH_ONLY(t1) ?
+								MAY_BE_ARRAY_NUMERIC_HASH : MAY_BE_ARRAY_KEY_LONG;
 						}
 					} else {
 						if (t2 & (MAY_BE_LONG|MAY_BE_FALSE|MAY_BE_TRUE|MAY_BE_RESOURCE|MAY_BE_DOUBLE)) {
 							if (t1 & (MAY_BE_UNDEF|MAY_BE_NULL|MAY_BE_FALSE)) {
 								key_type |= MAY_BE_ARRAY_PACKED;
 							}
 							if (t1 & MAY_BE_ARRAY) {
-								key_type |= assign_long_dim_array_result_type(t1);
+								key_type |= MAY_BE_HASH_ONLY(t1) ?
+									MAY_BE_ARRAY_NUMERIC_HASH : MAY_BE_ARRAY_KEY_LONG;
 						    }
 						}
 						if (t2 & MAY_BE_STRING) {
@@ -3288,7 +3275,8 @@ static zend_always_inline int _zend_update_type_info(
 									key_type |= MAY_BE_ARRAY_PACKED;
 								}
 								if (t1 & MAY_BE_ARRAY) {
-									key_type |= assign_long_dim_array_result_type(t1);
+									key_type |= MAY_BE_HASH_ONLY(t1) ?
+										MAY_BE_ARRAY_NUMERIC_HASH : MAY_BE_ARRAY_KEY_LONG;
 							    }
 							}
 						}
diff --git a/ext/opcache/tests/opt/gh10008.phpt b/ext/opcache/tests/opt/gh10008.phpt

Original file line number	Diff line number	Diff line change
`@@ -1926,21 +1926,6 @@ ZEND_API uint32_t zend_array_element_type(uint32_t t1, zend_uchar op_type, int w`
`1926`	`1926`	`return tmp;`
`1927`	`1927`	`}`
`1928`	`1928`
`1929`		`-static zend_always_inline uint32_t assign_long_dim_array_result_type(uint32_t arr_type)`
`1930`		`-{`
`1931`		`- /* Rules:`
`1932`		`- * HASH_ONLY -> MAY_BE_ARRAY_NUMERIC_HASH`
`1933`		`- * PACKED_ONLY -> MAY_BE_ARRAY_NUMERIC_HASH \| MAY_BE_ARRAY_PACKED (== MAY_BE_ARRAY_KEY_LONG)`
`1934`		`- * HASH \|\| PACKED -> MAY_BE_ARRAY_NUMERIC_HASH \| MAY_BE_ARRAY_PACKED (== MAY_BE_ARRAY_KEY_LONG)`
`1935`		`- * 0 -> MAY_BE_ARRAY_NUMERIC_HASH`
`1936`		`- */`
`1937`		`- if (MAY_BE_PACKED(arr_type)) {`
`1938`		`- return MAY_BE_ARRAY_KEY_LONG;`
`1939`		`- } else {`
`1940`		`- return MAY_BE_ARRAY_NUMERIC_HASH;`
`1941`		`- }`
`1942`		`-}`
`1943`		`-`
`1944`	`1929`	`static uint32_t assign_dim_array_result_type(`
`1945`	`1930`	`uint32_t arr_type, uint32_t dim_type, uint32_t value_type, zend_uchar dim_op_type) {`
`1946`	`1931`	`uint32_t tmp = 0;`
`@@ -1954,13 +1939,13 @@ static uint32_t assign_dim_array_result_type(`
`1954`	`1939`	`if (arr_type & (MAY_BE_UNDEF\|MAY_BE_NULL\|MAY_BE_FALSE)) {`
`1955`	`1940`	`tmp \|= MAY_BE_ARRAY_PACKED;`
`1956`	`1941`	`}`
`1957`		`- tmp \|= assign_long_dim_array_result_type(arr_type);`
	`1942`	`+ tmp \|= MAY_BE_HASH_ONLY(arr_type) ? MAY_BE_ARRAY_NUMERIC_HASH : MAY_BE_ARRAY_KEY_LONG;`
`1958`	`1943`	`} else {`
`1959`	`1944`	`if (dim_type & (MAY_BE_LONG\|MAY_BE_FALSE\|MAY_BE_TRUE\|MAY_BE_RESOURCE\|MAY_BE_DOUBLE)) {`
`1960`	`1945`	`if (arr_type & (MAY_BE_UNDEF\|MAY_BE_NULL\|MAY_BE_FALSE)) {`
`1961`	`1946`	`tmp \|= MAY_BE_ARRAY_PACKED;`
`1962`	`1947`	`}`
`1963`		`- tmp \|= assign_long_dim_array_result_type(arr_type);`
	`1948`	`+ tmp \|= MAY_BE_HASH_ONLY(arr_type) ? MAY_BE_ARRAY_NUMERIC_HASH : MAY_BE_ARRAY_KEY_LONG;`
`1964`	`1949`	`}`
`1965`	`1950`	`if (dim_type & MAY_BE_STRING) {`
`1966`	`1951`	`tmp \|= MAY_BE_ARRAY_KEY_STRING;`
`@@ -1969,7 +1954,7 @@ static uint32_t assign_dim_array_result_type(`
`1969`	`1954`	`if (arr_type & (MAY_BE_UNDEF\|MAY_BE_NULL\|MAY_BE_FALSE)) {`
`1970`	`1955`	`tmp \|= MAY_BE_ARRAY_PACKED;`
`1971`	`1956`	`}`
`1972`		`- tmp \|= assign_long_dim_array_result_type(arr_type);`
	`1957`	`+ tmp \|= MAY_BE_HASH_ONLY(arr_type) ? MAY_BE_ARRAY_NUMERIC_HASH : MAY_BE_ARRAY_KEY_LONG;`
`1973`	`1958`	`}`
`1974`	`1959`	`}`
`1975`	`1960`	`if (dim_type & (MAY_BE_UNDEF\|MAY_BE_NULL)) {`
`@@ -3269,15 +3254,17 @@ static zend_always_inline int _zend_update_type_info(`
`3269`	`3254`	`key_type \|= MAY_BE_ARRAY_PACKED;`
`3270`	`3255`	`}`
`3271`	`3256`	`if (t1 & MAY_BE_ARRAY) {`
`3272`		`- key_type \|= assign_long_dim_array_result_type(t1);`
	`3257`	`+ key_type \|= MAY_BE_HASH_ONLY(t1) ?`
	`3258`	`+ MAY_BE_ARRAY_NUMERIC_HASH : MAY_BE_ARRAY_KEY_LONG;`
`3273`	`3259`	`}`
`3274`	`3260`	`} else {`
`3275`	`3261`	`if (t2 & (MAY_BE_LONG\|MAY_BE_FALSE\|MAY_BE_TRUE\|MAY_BE_RESOURCE\|MAY_BE_DOUBLE)) {`
`3276`	`3262`	`if (t1 & (MAY_BE_UNDEF\|MAY_BE_NULL\|MAY_BE_FALSE)) {`
`3277`	`3263`	`key_type \|= MAY_BE_ARRAY_PACKED;`
`3278`	`3264`	`}`
`3279`	`3265`	`if (t1 & MAY_BE_ARRAY) {`
`3280`		`- key_type \|= assign_long_dim_array_result_type(t1);`
	`3266`	`+ key_type \|= MAY_BE_HASH_ONLY(t1) ?`
	`3267`	`+ MAY_BE_ARRAY_NUMERIC_HASH : MAY_BE_ARRAY_KEY_LONG;`
`3281`	`3268`	`}`
`3282`	`3269`	`}`
`3283`	`3270`	`if (t2 & MAY_BE_STRING) {`
`@@ -3288,7 +3275,8 @@ static zend_always_inline int _zend_update_type_info(`
`3288`	`3275`	`key_type \|= MAY_BE_ARRAY_PACKED;`
`3289`	`3276`	`}`
`3290`	`3277`	`if (t1 & MAY_BE_ARRAY) {`
`3291`		`- key_type \|= assign_long_dim_array_result_type(t1);`
	`3278`	`+ key_type \|= MAY_BE_HASH_ONLY(t1) ?`
	`3279`	`+ MAY_BE_ARRAY_NUMERIC_HASH : MAY_BE_ARRAY_KEY_LONG;`
`3292`	`3280`	`}`
`3293`	`3281`	`}`
`3294`	`3282`	`}`