Module Name:    src
Committed By:   rillig
Date:           Sun Jul 25 10:57:38 UTC 2021

Modified Files:
        src/distrib/sets/lists/tests: mi
        src/tests/usr.bin/xlint/lint1: Makefile
Added Files:
        src/tests/usr.bin/xlint/lint1: gcc_typeof.c gcc_typeof.exp

Log Message:
tests/lint: demonstrate missing support for GCC typeof


To generate a diff of this commit:
cvs rdiff -u -r1.1093 -r1.1094 src/distrib/sets/lists/tests/mi
cvs rdiff -u -r1.94 -r1.95 src/tests/usr.bin/xlint/lint1/Makefile
cvs rdiff -u -r0 -r1.1 src/tests/usr.bin/xlint/lint1/gcc_typeof.c \
    src/tests/usr.bin/xlint/lint1/gcc_typeof.exp

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

Modified files:

Index: src/distrib/sets/lists/tests/mi
diff -u src/distrib/sets/lists/tests/mi:1.1093 src/distrib/sets/lists/tests/mi:1.1094
--- src/distrib/sets/lists/tests/mi:1.1093	Sun Jul 25 09:29:20 2021
+++ src/distrib/sets/lists/tests/mi	Sun Jul 25 10:57:38 2021
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.1093 2021/07/25 09:29:20 rillig Exp $
+# $NetBSD: mi,v 1.1094 2021/07/25 10:57:38 rillig Exp $
 #
 # Note: don't delete entries from here - mark them as "obsolete" instead.
 #
@@ -6258,6 +6258,8 @@
 ./usr/tests/usr.bin/xlint/lint1/gcc_init_compound_literal.exp	tests-usr.bin-tests	compattestfile,atf
 ./usr/tests/usr.bin/xlint/lint1/gcc_stmt_asm.c			tests-usr.bin-tests	compattestfile,atf
 ./usr/tests/usr.bin/xlint/lint1/gcc_stmt_asm.exp		tests-usr.bin-tests	compattestfile,atf
+./usr/tests/usr.bin/xlint/lint1/gcc_typeof.c			tests-usr.bin-tests	compattestfile,atf
+./usr/tests/usr.bin/xlint/lint1/gcc_typeof.exp			tests-usr.bin-tests	compattestfile,atf
 ./usr/tests/usr.bin/xlint/lint1/gcc_typeof_after_statement.c	tests-usr.bin-tests	compattestfile,atf
 ./usr/tests/usr.bin/xlint/lint1/gcc_typeof_after_statement.exp	tests-usr.bin-tests	compattestfile,atf
 ./usr/tests/usr.bin/xlint/lint1/init.c				tests-usr.bin-tests	compattestfile,atf

Index: src/tests/usr.bin/xlint/lint1/Makefile
diff -u src/tests/usr.bin/xlint/lint1/Makefile:1.94 src/tests/usr.bin/xlint/lint1/Makefile:1.95
--- src/tests/usr.bin/xlint/lint1/Makefile:1.94	Sun Jul 25 09:29:20 2021
+++ src/tests/usr.bin/xlint/lint1/Makefile	Sun Jul 25 10:57:38 2021
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.94 2021/07/25 09:29:20 rillig Exp $
+# $NetBSD: Makefile,v 1.95 2021/07/25 10:57:38 rillig Exp $
 
 NOMAN=		# defined
 MAX_MESSAGE=	345		# see lint1/err.c
@@ -156,6 +156,8 @@ FILES+=		gcc_init_compound_literal.c
 FILES+=		gcc_init_compound_literal.exp
 FILES+=		gcc_stmt_asm.c
 FILES+=		gcc_stmt_asm.exp
+FILES+=		gcc_typeof.c
+FILES+=		gcc_typeof.exp
 FILES+=		gcc_typeof_after_statement.c
 FILES+=		gcc_typeof_after_statement.exp
 FILES+=		init.c

Added files:

Index: src/tests/usr.bin/xlint/lint1/gcc_typeof.c
diff -u /dev/null src/tests/usr.bin/xlint/lint1/gcc_typeof.c:1.1
--- /dev/null	Sun Jul 25 10:57:38 2021
+++ src/tests/usr.bin/xlint/lint1/gcc_typeof.c	Sun Jul 25 10:57:38 2021
@@ -0,0 +1,35 @@
+/*	$NetBSD: gcc_typeof.c,v 1.1 2021/07/25 10:57:38 rillig Exp $	*/
+# 3 "gcc_typeof.c"
+
+/*
+ * Tests for the GCC extension 'typeof'.
+ *
+ * https://gcc.gnu.org/onlinedocs/gcc/Typeof.html
+ */
+
+void take_double(typeof(0.0));
+
+void take_function_double_returning_double(
+    typeof(0.0)(
+	/* FIXME: GCC can parse this */
+	/* expect+1: error: syntax error 'typeof' [249] */
+	typeof(0.0)
+    )
+);
+
+void
+cast(double(*fn)(double))
+{
+	take_double(0.0);
+
+	/* expect+1: warning: passing 'pointer to function(double) returning double' to incompatible 'double', arg #1 [155] */
+	take_double(fn);
+
+	/* XXX: oops; GCC detects this type mismatch. probably due to the parse error. */
+	take_function_double_returning_double(0.0);
+
+	take_function_double_returning_double(fn);
+
+	/* identity cast */
+	take_function_double_returning_double((double (*)(double))fn);
+}
Index: src/tests/usr.bin/xlint/lint1/gcc_typeof.exp
diff -u /dev/null src/tests/usr.bin/xlint/lint1/gcc_typeof.exp:1.1
--- /dev/null	Sun Jul 25 10:57:38 2021
+++ src/tests/usr.bin/xlint/lint1/gcc_typeof.exp	Sun Jul 25 10:57:38 2021
@@ -0,0 +1,2 @@
+gcc_typeof.c(16): error: syntax error 'typeof' [249]
+gcc_typeof.c(26): warning: passing 'pointer to function(double) returning double' to incompatible 'double', arg #1 [155]

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