ref: 5ae4a720c0f1a1b07cbb3236903a08b71fe33e00
parent: bcbe85359f6a31024317c356bcfc19ea63117ca0
author: Roberto E. Vargas Caballero <k0ga@shike2.com>
date: Fri Jul 5 04:24:39 EDT 2013
Forbid sign modifier in bool type Bool type can not be signed or unsigned. It represents the smaller data type which can hold a bit (usually a unsigned char).
--- a/decl.c
+++ b/decl.c
@@ -91,8 +91,8 @@
if (sign)
error("both 'signed' and 'unsigned' in declaration specifiers"); switch (type) {- case FLOAT: case DOUBLE: case LDOUBLE:
- goto float_sign;
+ case FLOAT: case DOUBLE: case LDOUBLE: case BOOL:
+ goto invalid_sign;
}
if (!tp)
tp = newctype();
@@ -99,11 +99,10 @@
if ((type = sign = yytoken) == UNSIGNED)
tp->c_unsigned = 1;
break;
- case FLOAT: case DOUBLE:
+ case FLOAT: case DOUBLE: case BOOL:
if (sign)
- goto float_sign;
- case VOID: case CHAR: case SHORT:
- case INT: case LONG: case BOOL:
+ goto invalid_sign;
+ case VOID: case CHAR: case SHORT: case INT: case LONG:
tp = btype(tp, yytoken);
type = tp->type;
break;
@@ -128,8 +127,8 @@
return tp;
}
}
-float_sign:
- error("floating types cannot be signed or unsigned");+invalid_sign:
+ error("invalid sign modifier");}
static void
--
⑨