[src/trunk]: src/usr.bin/xlint/lint1 Avoid null pointer exception hpcmips/mip...

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

details:   https://anonhg.NetBSD.org/src/rev/6e11e3498b1d
branches:  trunk
changeset: 990630:6e11e3498b1d
user:      christos <christos%NetBSD.org@localhost>
date:      Sun Oct 31 16:42:16 2021 +0000

description:
Avoid null pointer exception hpcmips/mipsel src/lib/libperfuse/ops.c

diffstat:

 usr.bin/xlint/lint1/tree.c |  7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diffs (28 lines):

diff -r 43a24c12d8b6 -r 6e11e3498b1d usr.bin/xlint/lint1/tree.c
--- a/usr.bin/xlint/lint1/tree.c        Sun Oct 31 16:29:18 2021 +0000
+++ b/usr.bin/xlint/lint1/tree.c        Sun Oct 31 16:42:16 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: tree.c,v 1.386 2021/10/30 22:04:42 rillig Exp $        */
+/*     $NetBSD: tree.c,v 1.387 2021/10/31 16:42:16 christos Exp $      */
 
 /*
  * Copyright (c) 1994, 1995 Jochen Pohl
@@ -37,7 +37,7 @@
 
 #include <sys/cdefs.h>
 #if defined(__RCSID) && !defined(lint)
-__RCSID("$NetBSD: tree.c,v 1.386 2021/10/30 22:04:42 rillig Exp $");
+__RCSID("$NetBSD: tree.c,v 1.387 2021/10/31 16:42:16 christos Exp $");
 #endif
 
 #include <float.h>
@@ -1793,6 +1793,9 @@
                return;
        if (rn->tn_left->tn_type->t_tspec != ENUM)
                return;
+       // XXX: why?
+       if (rn->tn_type->t_enum == NULL)
+               return;
 
        max_enum_value = INT_MIN;
        ec = rn->tn_type->t_enum->en_first_enumerator;