Module Name:    src
Committed By:   rillig
Date:           Sun Aug 29 09:05:35 UTC 2021

Modified Files:
        src/tests/usr.bin/xlint/lint1: msg_220.c msg_220.exp
        src/usr.bin/xlint/lint1: lex.c

Log Message:
lint: accept keyword variant FALL THROUGH as alias to FALLTHROUGH

Seen in archive_string.c, macro WRITE_UC.

No documentation change since the canonical spelling of this keyword
stays the same.


To generate a diff of this commit:
cvs rdiff -u -r1.4 -r1.5 src/tests/usr.bin/xlint/lint1/msg_220.c
cvs rdiff -u -r1.3 -r1.4 src/tests/usr.bin/xlint/lint1/msg_220.exp
cvs rdiff -u -r1.78 -r1.79 src/usr.bin/xlint/lint1/lex.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/tests/usr.bin/xlint/lint1/msg_220.c
diff -u src/tests/usr.bin/xlint/lint1/msg_220.c:1.4 src/tests/usr.bin/xlint/lint1/msg_220.c:1.5
--- src/tests/usr.bin/xlint/lint1/msg_220.c:1.4	Sun Aug 29 08:57:50 2021
+++ src/tests/usr.bin/xlint/lint1/msg_220.c	Sun Aug 29 09:05:35 2021
@@ -1,4 +1,4 @@
-/*	$NetBSD: msg_220.c,v 1.4 2021/08/29 08:57:50 rillig Exp $	*/
+/*	$NetBSD: msg_220.c,v 1.5 2021/08/29 09:05:35 rillig Exp $	*/
 # 3 "msg_220.c"
 
 // Test for message: fallthrough on case statement [220]
@@ -53,7 +53,7 @@ annotation_comment_variations(int n)
 	case 1:
 		println("1");
 		/* FALL THROUGH */
-		/* expect+1: warning: fallthrough on case statement [220] */
+		/* Lint warned before 2021-08-29. */
 	case 2:
 		println("2");
 		/* FALLS THROUGH */

Index: src/tests/usr.bin/xlint/lint1/msg_220.exp
diff -u src/tests/usr.bin/xlint/lint1/msg_220.exp:1.3 src/tests/usr.bin/xlint/lint1/msg_220.exp:1.4
--- src/tests/usr.bin/xlint/lint1/msg_220.exp:1.3	Sun Aug 29 08:57:50 2021
+++ src/tests/usr.bin/xlint/lint1/msg_220.exp	Sun Aug 29 09:05:35 2021
@@ -1,6 +1,5 @@
 msg_220.c(19): warning: fallthrough on case statement [220]
 msg_220.c(22): warning: fallthrough on default statement [284]
-msg_220.c(57): warning: fallthrough on case statement [220]
 msg_220.c(61): warning: fallthrough on case statement [220]
 msg_220.c(65): warning: fallthrough on case statement [220]
 msg_220.c(69): warning: fallthrough on case statement [220]

Index: src/usr.bin/xlint/lint1/lex.c
diff -u src/usr.bin/xlint/lint1/lex.c:1.78 src/usr.bin/xlint/lint1/lex.c:1.79
--- src/usr.bin/xlint/lint1/lex.c:1.78	Sat Aug 28 21:52:14 2021
+++ src/usr.bin/xlint/lint1/lex.c	Sun Aug 29 09:05:35 2021
@@ -1,4 +1,4 @@
-/* $NetBSD: lex.c,v 1.78 2021/08/28 21:52:14 rillig Exp $ */
+/* $NetBSD: lex.c,v 1.79 2021/08/29 09:05:35 rillig 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 1.78 2021/08/28 21:52:14 rillig Exp $");
+__RCSID("$NetBSD: lex.c,v 1.79 2021/08/29 09:05:35 rillig Exp $");
 #endif
 
 #include <ctype.h>
@@ -1120,6 +1120,7 @@ lex_comment(void)
 		{ "CONSTANTCONDITION",	false,	constcond	},
 		{ "FALLTHRU",		false,	fallthru	},
 		{ "FALLTHROUGH",	false,	fallthru	},
+		{ "FALL THROUGH",	false,	fallthru	},
 		{ "LINTLIBRARY",	false,	lintlib		},
 		{ "LINTED",		true,	linted		},
 		{ "LONGLONG",		false,	longlong	},
@@ -1144,10 +1145,13 @@ lex_comment(void)
 
 	/* Read the potential keyword to keywd */
 	l = 0;
-	while (c != EOF && isupper(c) && l < sizeof(keywd) - 1) {
+	while (c != EOF && l < sizeof(keywd) - 1 &&
+	    (isupper(c) || isspace(c))) {
 		keywd[l++] = (char)c;
 		c = inpc();
 	}
+	while (l > 0 && ch_isspace(keywd[l - 1]))
+		l--;
 	keywd[l] = '\0';
 
 	/* look for the keyword */

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