|
 |
56d343 |
2014-10-17 Marek Polacek <polacek@redhat.com>
|
|
|
56d343 |
|
|
|
56d343 |
PR c/63567
|
|
|
56d343 |
* c-typeck.c (digest_init): Allow initializing objects with static
|
|
|
56d343 |
storage duration with compound literals even in C99 and add pedwarn
|
|
|
56d343 |
for it.
|
|
|
56d343 |
|
|
|
56d343 |
--- gcc/c/c-typeck.c
|
|
|
56d343 |
+++ gcc/c/c-typeck.c
|
|
|
56d343 |
@@ -6683,13 +6683,15 @@ digest_init (location_t init_loc, tree type, tree init, tree origtype,
|
|
|
56d343 |
inside_init = convert (type, inside_init);
|
|
|
56d343 |
|
|
|
56d343 |
if (require_constant
|
|
|
56d343 |
- && (code == VECTOR_TYPE || !flag_isoc99)
|
|
|
56d343 |
&& TREE_CODE (inside_init) == COMPOUND_LITERAL_EXPR)
|
|
|
56d343 |
{
|
|
|
56d343 |
/* As an extension, allow initializing objects with static storage
|
|
|
56d343 |
duration with compound literals (which are then treated just as
|
|
|
56d343 |
the brace enclosed list they contain). Also allow this for
|
|
|
56d343 |
vectors, as we can only assign them with compound literals. */
|
|
|
56d343 |
+ if (flag_isoc99 && code != VECTOR_TYPE)
|
|
|
56d343 |
+ pedwarn_init (init_loc, OPT_Wpedantic, "initializer element "
|
|
|
56d343 |
+ "is not constant");
|
|
|
56d343 |
tree decl = COMPOUND_LITERAL_EXPR_DECL (inside_init);
|
|
|
56d343 |
inside_init = DECL_INITIAL (decl);
|
|
|
56d343 |
}
|
|
|
56d343 |
--- /dev/null
|
|
|
56d343 |
+++ gcc/testsuite/gcc.dg/pr63567-1.c
|
|
|
56d343 |
@@ -0,0 +1,10 @@
|
|
|
56d343 |
+/* PR c/63567 */
|
|
|
56d343 |
+/* { dg-do compile } */
|
|
|
56d343 |
+/* { dg-options "" } */
|
|
|
56d343 |
+
|
|
|
56d343 |
+/* Allow initializing objects with static storage duration with
|
|
|
56d343 |
+ compound literals even. This is being used in Linux kernel. */
|
|
|
56d343 |
+
|
|
|
56d343 |
+struct T { int i; };
|
|
|
56d343 |
+struct S { struct T t; };
|
|
|
56d343 |
+static struct S s = (struct S) { .t = { 42 } };
|
|
|
56d343 |
--- /dev/null
|
|
|
56d343 |
+++ gcc/testsuite/gcc.dg/pr63567-2.c
|
|
|
56d343 |
@@ -0,0 +1,10 @@
|
|
|
56d343 |
+/* PR c/63567 */
|
|
|
56d343 |
+/* { dg-do compile } */
|
|
|
56d343 |
+/* { dg-options "-pedantic -std=gnu99" } */
|
|
|
56d343 |
+
|
|
|
56d343 |
+/* Allow initializing objects with static storage duration with
|
|
|
56d343 |
+ compound literals. This is being used in Linux kernel. */
|
|
|
56d343 |
+
|
|
|
56d343 |
+struct T { int i; };
|
|
|
56d343 |
+struct S { struct T t; };
|
|
|
56d343 |
+static struct S s = (struct S) { .t = { 42 } }; /* { dg-warning "initializer element is not constant" } */
|