Module Name: src
Committed By: rillig
Date: Thu Apr 28 07:10:39 UTC 2022
Modified Files:
src/tests/usr.bin/xlint/lint1: gcc_attribute_stmt.c
gcc_attribute_stmt.exp
Log Message:
tests/lint: add test for GCC unused statement
Seen in xsrc/LRGB.c:799.
Even though it looks like this lint error may have been introduced by
cgram.y 1.400 from 2022-04-24 (since LRGB.c has been unchanged for a
month), earlier versions of lint produce the same parse errors.
To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 src/tests/usr.bin/xlint/lint1/gcc_attribute_stmt.c \
src/tests/usr.bin/xlint/lint1/gcc_attribute_stmt.exp
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/gcc_attribute_stmt.c
diff -u src/tests/usr.bin/xlint/lint1/gcc_attribute_stmt.c:1.1 src/tests/usr.bin/xlint/lint1/gcc_attribute_stmt.c:1.2
--- src/tests/usr.bin/xlint/lint1/gcc_attribute_stmt.c:1.1 Tue Jul 6 17:33:07 2021
+++ src/tests/usr.bin/xlint/lint1/gcc_attribute_stmt.c Thu Apr 28 07:10:39 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: gcc_attribute_stmt.c,v 1.1 2021/07/06 17:33:07 rillig Exp $ */
+/* $NetBSD: gcc_attribute_stmt.c,v 1.2 2022/04/28 07:10:39 rillig Exp $ */
# 3 "gcc_attribute_stmt.c"
/*
@@ -34,3 +34,24 @@ attribute_fallthrough(int i)
__attribute__((__fallthrough__));
}
}
+
+/*
+ * Despite being undocumented, GCC 10 accepts __attribute__((__unused__))
+ * at the beginning of a statement.
+ */
+void
+unused_statements(int x)
+{
+ switch (x) {
+ case 3:
+ __attribute__((__unused__))
+ /* expect+1: error: syntax error 'break' [249] */
+ break;
+ case 4:
+ goto label;
+ label:
+ __attribute__((__unused__))
+ /* expect+1: error: syntax error 'return' [249] */
+ return;
+ }
+}
Index: src/tests/usr.bin/xlint/lint1/gcc_attribute_stmt.exp
diff -u src/tests/usr.bin/xlint/lint1/gcc_attribute_stmt.exp:1.1 src/tests/usr.bin/xlint/lint1/gcc_attribute_stmt.exp:1.2
--- src/tests/usr.bin/xlint/lint1/gcc_attribute_stmt.exp:1.1 Tue Jul 6 17:33:07 2021
+++ src/tests/usr.bin/xlint/lint1/gcc_attribute_stmt.exp Thu Apr 28 07:10:39 2022
@@ -1 +1,3 @@
gcc_attribute_stmt.c(34): error: syntax error '__attribute__' [249]
+gcc_attribute_stmt.c(49): error: syntax error 'break' [249]
+gcc_attribute_stmt.c(55): error: syntax error 'return' [249]
