commit 321ff05de46a7eaf967e73364dd02fa70c08518a
parent 9c8462aa2508d754ae0d9e1dcddcd7883ec0b129
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date: Fri, 10 Feb 2012 08:49:57 +0100
Added declaration of default integers
When a variable is defined without type, its default type is
integer. In C99 this rule is removed , but is common in compilers
continuing using it.
Conflicts:
types.c
Diffstat:
| M | decl.c | | | 72 | ++++++++++++++++-------------------------------------------------------- |
1 file changed, 16 insertions(+), 56 deletions(-)
diff --git a/decl.c b/decl.c
@@ -93,8 +93,10 @@ struct type *types[][2] = {{T_VOID, NULL},
struct type *specifier(void)
{
static char sign, sclass, tqlf, nt;
- struct type *t = NULL;
+ struct type *t;
+repeat:
+ t = NULL;
tqlf = sign = sclass = 0;
for (;;) {
switch (gettok()) {
@@ -126,8 +128,20 @@ struct type *specifier(void)
case STRUCT: /* TODO */
case UNION: /* TODO */
case ENUM: /* TODO */
+ case ';':
+ if (t != NULL) {
+ warning("useless type name in empty "
+ "declaration");
+ }
+ goto repeat;
case IDENTIFIER:
- /* TODO */
+ /* TODO: deal with user types */
+ if (t == NULL) {
+ warning_error(user_opt.implicit_int,
+ "type defaults to 'int' "
+ "in declaration of", yytext);
+ return T_INT;
+ }
default:
return t;
}
@@ -236,60 +250,6 @@ void declaration(void)
}
-#if 0
-void specdcl(void)
-{
- struct spec_type t = {0, 0, 0};
-
-repeat:
- parser_out_home = 1;
- switch (gettok()) {
- case TYPEDEF:
- case EXTERN:
- case STATIC:
- case AUTO:
- case REGISTER:
- case CONST:
- case VOLATILE:
- case SIGNED:
- case UNSIGNED:
- if (!(t.mods ^= MODIFIER(tok)))
- error("duplicate '%s'", yytext);
- goto repeat;
- case IDENTIFIER:
- /* This is incorrect!!! */
- t.type = TYPE(INT);
- if (user_opt.implicit_int) {
- warning_error(user_opt.c99,
- "type defaults to ‘int’ in declaration"
- " of", yytext);
- }
- if (gettok() != ';')
- goto non_end_after_id;
- return ';';
- case VOID:
- case CHAR:
- case INT:
- case LONG:
- case FLOAT:
- case DOUBLE:
- if (!(t.type ^= (1 << TYPE(tok))))
- error("duplicate '%s'", yytext);
-
- case STRUCT:
- case UNION:
- case ENUM:
- case TYPE_NAME:
- ;
- }
-
-
-non_end_after_id:
- error("';' expected");
-}
-#endif
-
-
#include <stddef.h>
