Don't specify precedence for T_INC/T_DEC

As these do not operate on expressions, precedence is meaningless
for them.

Author: nikic

Zend/zend_language_parser.y

@@ -75,7 +75,7 @@ static YYSIZE_T zend_yytnamerr(char*, const char*);
 %left '*' '/' '%'
 %precedence '!'
 %precedence T_INSTANCEOF
-%precedence '~' T_INC T_DEC T_INT_CAST T_DOUBLE_CAST T_STRING_CAST T_ARRAY_CAST T_OBJECT_CAST T_BOOL_CAST T_UNSET_CAST '@'
+%precedence '~' T_INT_CAST T_DOUBLE_CAST T_STRING_CAST T_ARRAY_CAST T_OBJECT_CAST T_BOOL_CAST T_UNSET_CAST '@'
 %right T_POW
 %precedence T_NEW T_CLONE
 
@@ -938,8 +938,8 @@ expr:
 	|	expr '%' expr 	{ $$ = zend_ast_create_binary_op(ZEND_MOD, $1, $3); }
 	| 	expr T_SL expr	{ $$ = zend_ast_create_binary_op(ZEND_SL, $1, $3); }
 	|	expr T_SR expr	{ $$ = zend_ast_create_binary_op(ZEND_SR, $1, $3); }
-	|	'+' expr %prec T_INC { $$ = zend_ast_create(ZEND_AST_UNARY_PLUS, $2); }
-	|	'-' expr %prec T_INC { $$ = zend_ast_create(ZEND_AST_UNARY_MINUS, $2); }
+	|	'+' expr %prec '~' { $$ = zend_ast_create(ZEND_AST_UNARY_PLUS, $2); }
+	|	'-' expr %prec '~' { $$ = zend_ast_create(ZEND_AST_UNARY_MINUS, $2); }
 	|	'!' expr { $$ = zend_ast_create_ex(ZEND_AST_UNARY_OP, ZEND_BOOL_NOT, $2); }
 	|	'~' expr { $$ = zend_ast_create_ex(ZEND_AST_UNARY_OP, ZEND_BW_NOT, $2); }
 	|	expr T_IS_IDENTICAL expr

ext/tokenizer/tokenizer_data.c

@@ -64,8 +64,6 @@ void tokenizer_register_constants(INIT_FUNC_ARGS) {
 	REGISTER_LONG_CONSTANT("T_SL", T_SL, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("T_SR", T_SR, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("T_INSTANCEOF", T_INSTANCEOF, CONST_CS | CONST_PERSISTENT);
-	REGISTER_LONG_CONSTANT("T_INC", T_INC, CONST_CS | CONST_PERSISTENT);
-	REGISTER_LONG_CONSTANT("T_DEC", T_DEC, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("T_INT_CAST", T_INT_CAST, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("T_DOUBLE_CAST", T_DOUBLE_CAST, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("T_STRING_CAST", T_STRING_CAST, CONST_CS | CONST_PERSISTENT);
@@ -88,6 +86,8 @@ void tokenizer_register_constants(INIT_FUNC_ARGS) {
 	REGISTER_LONG_CONSTANT("T_STRING_VARNAME", T_STRING_VARNAME, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("T_NUM_STRING", T_NUM_STRING, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("T_EVAL", T_EVAL, CONST_CS | CONST_PERSISTENT);
+	REGISTER_LONG_CONSTANT("T_INC", T_INC, CONST_CS | CONST_PERSISTENT);
+	REGISTER_LONG_CONSTANT("T_DEC", T_DEC, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("T_EXIT", T_EXIT, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("T_IF", T_IF, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("T_ENDIF", T_ENDIF, CONST_CS | CONST_PERSISTENT);
@@ -207,8 +207,6 @@ char *get_token_type_name(int token_type)
 		case T_SL: return "T_SL";
 		case T_SR: return "T_SR";
 		case T_INSTANCEOF: return "T_INSTANCEOF";
-		case T_INC: return "T_INC";
-		case T_DEC: return "T_DEC";
 		case T_INT_CAST: return "T_INT_CAST";
 		case T_DOUBLE_CAST: return "T_DOUBLE_CAST";
 		case T_STRING_CAST: return "T_STRING_CAST";
@@ -231,6 +229,8 @@ char *get_token_type_name(int token_type)
 		case T_STRING_VARNAME: return "T_STRING_VARNAME";
 		case T_NUM_STRING: return "T_NUM_STRING";
 		case T_EVAL: return "T_EVAL";
+		case T_INC: return "T_INC";
+		case T_DEC: return "T_DEC";
 		case T_EXIT: return "T_EXIT";
 		case T_IF: return "T_IF";
 		case T_ENDIF: return "T_ENDIF";