gcc/gcc41-pr30988.patch
Jakub Jelinek d8d9cbe2d6 4.1.2-34
2007-11-25 20:29:41 +00:00

104 lines
2.5 KiB
Diff

2007-11-18 Jakub Jelinek <jakub@redhat.com>
PR c++/30988
* semantics.c (finish_call_expr): Set
current_function_returns_abnormally if fn is noreturn FUNCTION_DECL
or OVERLOAD with all noreturn functions.
* g++.dg/warn/noreturn-4.C: New test.
* g++.dg/warn/noreturn-5.C: New test.
* g++.dg/warn/noreturn-6.C: New test.
* g++.dg/warn/noreturn-7.C: New test.
--- gcc/cp/semantics.c (revision 130279)
+++ gcc/cp/semantics.c (revision 130280)
@@ -1846,6 +1846,20 @@ finish_call_expr (tree fn, tree args, bo
{
result = build_nt_call_list (fn, args);
KOENIG_LOOKUP_P (result) = koenig_p;
+ if (cfun)
+ {
+ do
+ {
+ tree fndecl = OVL_CURRENT (fn);
+ if (TREE_CODE (fndecl) != FUNCTION_DECL
+ || !TREE_THIS_VOLATILE (fndecl))
+ break;
+ fn = OVL_NEXT (fn);
+ }
+ while (fn);
+ if (!fn)
+ current_function_returns_abnormally = 1;
+ }
return result;
}
if (!BASELINK_P (fn)
--- gcc/testsuite/g++.dg/warn/noreturn-4.C (revision 0)
+++ gcc/testsuite/g++.dg/warn/noreturn-4.C (revision 130280)
@@ -0,0 +1,13 @@
+// PR c++/30988
+// { dg-do compile }
+// { dg-options "-O2 -Wall" }
+
+void f (const char *) __attribute__ ((noreturn));
+
+template <typename T> struct A
+{
+ int g ()
+ {
+ f (__FUNCTION__);
+ }
+};
--- gcc/testsuite/g++.dg/warn/noreturn-5.C (revision 0)
+++ gcc/testsuite/g++.dg/warn/noreturn-5.C (revision 130280)
@@ -0,0 +1,15 @@
+// PR c++/30988
+// { dg-do compile }
+// { dg-options "-O2 -Wall" }
+
+void f (const char *) __attribute__ ((noreturn));
+void f (int) __attribute__ ((noreturn));
+void f (double) __attribute__ ((noreturn));
+
+template <typename T> struct A
+{
+ int g ()
+ {
+ f ((T) 0);
+ }
+};
--- gcc/testsuite/g++.dg/warn/noreturn-6.C (revision 0)
+++ gcc/testsuite/g++.dg/warn/noreturn-6.C (revision 130280)
@@ -0,0 +1,13 @@
+// PR c++/30988
+// { dg-do compile }
+// { dg-options "-O2 -Wall" }
+
+void f (const char *);
+
+template <typename T> struct A
+{
+ int g ()
+ {
+ f (__FUNCTION__);
+ } // { dg-warning "no return statement in function returning non-void" }
+};
--- gcc/testsuite/g++.dg/warn/noreturn-7.C (revision 0)
+++ gcc/testsuite/g++.dg/warn/noreturn-7.C (revision 130280)
@@ -0,0 +1,15 @@
+// PR c++/30988
+// { dg-do compile }
+// { dg-options "-O2 -Wall" }
+
+void f (const char *) __attribute__ ((noreturn));
+void f (int);
+void f (double) __attribute__ ((noreturn));
+
+template <typename T> struct A
+{
+ int g ()
+ {
+ f ((T) 0);
+ } // { dg-warning "no return statement in function returning non-void" }
+};