Module Name: src
Committed By: rillig
Date: Sat Jan 15 22:12:35 UTC 2022
Modified Files:
src/tests/usr.bin/xlint/lint1: msg_193.c
Log Message:
tests/lint: demonstrate undetected double semicolon
In a statement-list like 'return 0;;', the second semicolon is a
separate, unreachable statement.
To generate a diff of this commit:
cvs rdiff -u -r1.14 -r1.15 src/tests/usr.bin/xlint/lint1/msg_193.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_193.c
diff -u src/tests/usr.bin/xlint/lint1/msg_193.c:1.14 src/tests/usr.bin/xlint/lint1/msg_193.c:1.15
--- src/tests/usr.bin/xlint/lint1/msg_193.c:1.14 Sun Aug 15 21:51:56 2021
+++ src/tests/usr.bin/xlint/lint1/msg_193.c Sat Jan 15 22:12:35 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: msg_193.c,v 1.14 2021/08/15 21:51:56 rillig Exp $ */
+/* $NetBSD: msg_193.c,v 1.15 2022/01/15 22:12:35 rillig Exp $ */
# 3 "msg_193.c"
// Test for message: statement not reached [193]
@@ -656,3 +656,14 @@ lint_annotation_NOTREACHED(void)
/* NOTREACHED */
suppressed();
}
+
+/*
+ * Since at least 2002, lint does not detect a double semicolon. See
+ * cgram.y, expression_statement, T_SEMI.
+ */
+int
+test_empty_statement(int x)
+{
+ /* TODO: expect+1: warning: statement not reachable [193] */
+ return x > 0 ? x : -x;;
+}
