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Add attribute fallthrough

This commit is contained in:
christos 2021-04-12 15:55:26 +00:00
parent 8396636f1d
commit 72ade848da
2 changed files with 12 additions and 5 deletions
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12
usr.bin/xlint/lint1/cgram.y
View File

@ -1,5 +1,5 @@
%{
/* $NetBSD: cgram.y,v 1.211 2021/04/02 12:16:50 rillig Exp $ */
/* $NetBSD: cgram.y,v 1.212 2021/04/12 15:55:26 christos Exp $ */
/*
* Copyright (c) 1996 Christopher G. Demetriou. All Rights Reserved.
@ -35,7 +35,7 @@
#include <sys/cdefs.h>
#if defined(__RCSID) && !defined(lint)
__RCSID("$NetBSD: cgram.y,v 1.211 2021/04/02 12:16:50 rillig Exp $");
__RCSID("$NetBSD: cgram.y,v 1.212 2021/04/12 15:55:26 christos Exp $");
#endif
#include <limits.h>
@ -218,6 +218,7 @@ anonymize(sym_t *s)
%token <y_type> T_AT_CONSTRUCTOR
%token <y_type> T_AT_DEPRECATED
%token <y_type> T_AT_DESTRUCTOR
%token <y_type> T_AT_FALLTHROUGH
%token <y_type> T_AT_FORMAT
%token <y_type> T_AT_FORMAT_ARG
%token <y_type> T_AT_FORMAT_GNU_PRINTF
@ -595,6 +596,9 @@ type_attribute_spec:
| T_AT_WARN_UNUSED_RESULT
| T_AT_WEAK
| T_AT_VISIBILITY T_LPAREN constant_expr T_RPAREN
| T_AT_FALLTHROUGH {
fallthru(1);
}
| T_QUAL {
if ($1 != CONST)
yyerror("Bad attribute");
@ -1490,7 +1494,8 @@ direct_abstract_decl:
;
non_expr_statement:
labeled_statement
type_attribute T_SEMI
| labeled_statement
| compound_statement
| selection_statement
| iteration_statement
@ -1498,6 +1503,7 @@ non_expr_statement:
seen_fallthrough = false;
}
| asm_statement
;
statement: /* C99 6.8 */
expr_statement

5
usr.bin/xlint/lint1/lex.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: lex.c,v 1.26 2021/04/09 15:58:43 rillig Exp $ */
/* $NetBSD: lex.c,v 1.27 2021/04/12 15:55:26 christos Exp $ */
/*
* Copyright (c) 1996 Christopher G. Demetriou. All Rights Reserved.
@ -38,7 +38,7 @@
#include <sys/cdefs.h>
#if defined(__RCSID) && !defined(lint)
__RCSID("$NetBSD: lex.c,v 1.26 2021/04/09 15:58:43 rillig Exp $");
__RCSID("$NetBSD: lex.c,v 1.27 2021/04/12 15:55:26 christos Exp $");
#endif
#include <ctype.h>
@ -169,6 +169,7 @@ static struct kwtab {
kwdef_token( "enum", T_ENUM, 0,0,0,0,1),
kwdef_token( "extension", T_EXTENSION, 0,0,1,0,4),
kwdef_sclass( "extern", EXTERN, 0,0,0,0,1),
kwdef_token( "fallthrough", T_AT_FALLTHROUGH, 0,0,1,1,5),
kwdef_type( "float", FLOAT, 0,0,0,0,1),
kwdef_token( "for", T_FOR, 0,0,0,0,1),
kwdef_token( "format", T_AT_FORMAT, 0,0,1,1,5),