[src/trunk]: src/usr.bin/xlint/lint1 lint: add type details to message for en...

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

details:   https://anonhg.NetBSD.org/src/rev/8c9873642f46
branches:  trunk
changeset: 1017875:8c9873642f46
user:      rillig <rillig%NetBSD.org@localhost>
date:      Thu Jan 14 07:42:31 2021 +0000

description:
lint: add type details to message for enum type mismatch

Before December 2020, it was cumbersome to add type information to a
message since the caller had to explicitly allocate buffers for the type
names.  That's probably the reason why this crucial detail had been left
out of the warning.

diffstat:

 tests/usr.bin/xlint/lint1/msg_156.exp |  2 +-
 usr.bin/xlint/lint1/err.c             |  6 +++---
 usr.bin/xlint/lint1/tree.c            |  9 +++++----
 3 files changed, 9 insertions(+), 8 deletions(-)

diffs (63 lines):

diff -r d276521c8857 -r 8c9873642f46 tests/usr.bin/xlint/lint1/msg_156.exp
--- a/tests/usr.bin/xlint/lint1/msg_156.exp     Thu Jan 14 07:34:48 2021 +0000
+++ b/tests/usr.bin/xlint/lint1/msg_156.exp     Thu Jan 14 07:42:31 2021 +0000
@@ -1,1 +1,1 @@
-msg_156.c(24): warning: enum type mismatch, arg #1 [156]
+msg_156.c(24): warning: enum type mismatch, arg #1 (enum color != enum size) [156]
diff -r d276521c8857 -r 8c9873642f46 usr.bin/xlint/lint1/err.c
--- a/usr.bin/xlint/lint1/err.c Thu Jan 14 07:34:48 2021 +0000
+++ b/usr.bin/xlint/lint1/err.c Thu Jan 14 07:42:31 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: err.c,v 1.66 2021/01/12 20:42:01 rillig Exp $  */
+/*     $NetBSD: err.c,v 1.67 2021/01/14 07:42:31 rillig Exp $  */
 
 /*
  * Copyright (c) 1994, 1995 Jochen Pohl
@@ -37,7 +37,7 @@
 
 #include <sys/cdefs.h>
 #if defined(__RCSID) && !defined(lint)
-__RCSID("$NetBSD: err.c,v 1.66 2021/01/12 20:42:01 rillig Exp $");
+__RCSID("$NetBSD: err.c,v 1.67 2021/01/14 07:42:31 rillig Exp $");
 #endif
 
 #include <sys/types.h>
@@ -215,7 +215,7 @@
        "argument has incompatible pointer type, arg #%d (%s != %s)", /* 153 */
        "illegal combination of %s (%s) and %s (%s), arg #%d",        /* 154 */
        "argument is incompatible with prototype, arg #%d",           /* 155 */
-       "enum type mismatch, arg #%d",                                /* 156 */
+       "enum type mismatch, arg #%d (%s != %s)",                     /* 156 */
        "ANSI C treats constant as unsigned",                         /* 157 */
        "%s may be used before set",                                  /* 158 */
        "assignment in conditional context",                          /* 159 */
diff -r d276521c8857 -r 8c9873642f46 usr.bin/xlint/lint1/tree.c
--- a/usr.bin/xlint/lint1/tree.c        Thu Jan 14 07:34:48 2021 +0000
+++ b/usr.bin/xlint/lint1/tree.c        Thu Jan 14 07:42:31 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: tree.c,v 1.151 2021/01/12 20:42:01 rillig Exp $        */
+/*     $NetBSD: tree.c,v 1.152 2021/01/14 07:42:31 rillig 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 1.151 2021/01/12 20:42:01 rillig Exp $");
+__RCSID("$NetBSD: tree.c,v 1.152 2021/01/14 07:42:31 rillig Exp $");
 #endif
 
 #include <float.h>
@@ -1675,8 +1675,9 @@
                        warning(210);
                        break;
                case FARG:
-                       /* enum type mismatch, arg #%d */
-                       warning(156, arg);
+                       /* enum type mismatch, arg #%d (%s != %s) */
+                       warning(156, arg,
+                           type_name(ln->tn_type), type_name(rn->tn_type));
                        break;
                case RETURN:
                        /* return value type mismatch (%s) and (%s) */