[src/trunk]: src/usr.bin/xlint/lint1 handle anonymous struct/union members.

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/0f538ca87d7d
branches:  trunk
changeset: 811135:0f538ca87d7d
user:      christos <christos%NetBSD.org@localhost>
date:      Tue Oct 13 20:25:21 2015 +0000

description:
handle anonymous struct/union members.

diffstat:

 usr.bin/xlint/lint1/cgram.y |  28 ++++++++++++++++++++++------
 usr.bin/xlint/lint1/decl.c  |   7 +++++--
 2 files changed, 27 insertions(+), 8 deletions(-)

diffs (89 lines):

diff -r 38c5f7775cf8 -r 0f538ca87d7d usr.bin/xlint/lint1/cgram.y
--- a/usr.bin/xlint/lint1/cgram.y       Tue Oct 13 20:12:03 2015 +0000
+++ b/usr.bin/xlint/lint1/cgram.y       Tue Oct 13 20:25:21 2015 +0000
@@ -1,5 +1,5 @@
 %{
-/* $NetBSD: cgram.y,v 1.72 2015/10/13 16:09:33 christos Exp $ */
+/* $NetBSD: cgram.y,v 1.73 2015/10/13 20:25:21 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 1.72 2015/10/13 16:09:33 christos Exp $");
+__RCSID("$NetBSD: cgram.y,v 1.73 2015/10/13 20:25:21 christos Exp $");
 #endif
 
 #include <stdlib.h>
@@ -105,6 +105,14 @@
 #define SAVE(f, l)     olwarn = lwarn
 #define RESTORE(f, l) (void)(olwarn == LWARN_BAD ? (clrwflgs(), 0) : (lwarn = olwarn))
 #endif
+
+/* unbind the anonymous struct members from the struct */
+static void
+anonymize(sym_t *s)
+{
+       for ( ; s; s = s->s_nxt)
+               s->s_styp = NULL;
+}
 %}
 
 %expect 80
@@ -698,14 +706,22 @@
                $$ = $4;
          }
        | noclass_declmods deftyp {
+               symtyp = FMOS;
                /* struct or union member must be named */
-               warning(49);
-               $$ = NULL;
+               if (!Sflag)
+                       warning(49);
+               /* add all the members of the anonymous struct/union */
+               $$ = dcs->d_type->t_str->memb;
+               anonymize($$);
          }
        | noclass_declspecs deftyp {
+               symtyp = FMOS;
                /* struct or union member must be named */
-               warning(49);
-               $$ = NULL;
+               if (!Sflag)
+                       warning(49);
+               $$ = dcs->d_type->t_str->memb;
+               /* add all the members of the anonymous struct/union */
+               anonymize($$);
          }
        | error {
                symtyp = FVFT;
diff -r 38c5f7775cf8 -r 0f538ca87d7d usr.bin/xlint/lint1/decl.c
--- a/usr.bin/xlint/lint1/decl.c        Tue Oct 13 20:12:03 2015 +0000
+++ b/usr.bin/xlint/lint1/decl.c        Tue Oct 13 20:25:21 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: decl.c,v 1.59 2014/04/18 00:20:37 christos Exp $ */
+/* $NetBSD: decl.c,v 1.60 2015/10/13 20:25:21 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: decl.c,v 1.59 2014/04/18 00:20:37 christos Exp $");
+__RCSID("$NetBSD: decl.c,v 1.60 2015/10/13 20:25:21 christos Exp $");
 #endif
 
 #include <sys/param.h>
@@ -1778,6 +1778,9 @@
                } else {
                        n = 0;
                        for (mem = fmem; mem != NULL; mem = mem->s_nxt) {
+                               /* bind anonymous members to the structure */
+                               if (mem->s_styp == NULL)
+                                       mem->s_styp = sp;
                                if (mem->s_name != unnamed)
                                        n++;
                        }