Module Name:    src
Committed By:   rillig
Date:           Fri Jul 21 05:51:12 UTC 2023

Modified Files:
        src/tests/usr.bin/xlint/lint1: msg_181.c

Log Message:
tests/lint: document an example of a non-constant initializer


To generate a diff of this commit:
cvs rdiff -u -r1.5 -r1.6 src/tests/usr.bin/xlint/lint1/msg_181.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_181.c
diff -u src/tests/usr.bin/xlint/lint1/msg_181.c:1.5 src/tests/usr.bin/xlint/lint1/msg_181.c:1.6
--- src/tests/usr.bin/xlint/lint1/msg_181.c:1.5	Tue Mar 28 14:44:35 2023
+++ src/tests/usr.bin/xlint/lint1/msg_181.c	Fri Jul 21 05:51:12 2023
@@ -1,4 +1,4 @@
-/*	$NetBSD: msg_181.c,v 1.5 2023/03/28 14:44:35 rillig Exp $	*/
+/*	$NetBSD: msg_181.c,v 1.6 2023/07/21 05:51:12 rillig Exp $	*/
 # 3 "msg_181.c"
 
 // Test for message: {}-enclosed initializer required [181]
@@ -8,3 +8,16 @@
 /* expect+1: error: {}-enclosed initializer required [181] */
 struct { int x; } missing_braces = 3;
 struct { int x; } including_braces = { 3 };
+
+
+// C11 6.6p7 requires the initializer of an object with static storage duration
+// to be a constant expression or an address constant, and a compound literal
+// is neither.  C11 6.6p10 allows an implementation to accept "other forms of
+// constant expressions", and GCC accepts compound literals that contain only
+// constant expressions.
+struct number {
+	int value;
+} num = (struct number){
+    .value = 3,
+};
+/* expect-1: error: {}-enclosed initializer required [181] */

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