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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/g++.old-deja/g++.other/singleton.C
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Diffstat (limited to 'gcc/testsuite/g++.old-deja/g++.other/singleton.C')
-rw-r--r--gcc/testsuite/g++.old-deja/g++.other/singleton.C39
1 files changed, 39 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.old-deja/g++.other/singleton.C b/gcc/testsuite/g++.old-deja/g++.other/singleton.C
new file mode 100644
index 000000000..2a27ca3cd
--- /dev/null
+++ b/gcc/testsuite/g++.old-deja/g++.other/singleton.C
@@ -0,0 +1,39 @@
+// { dg-do run }
+// This tests two things:
+// 1. there is an annoying warning.
+// singleton.C:26: warning: `class singleton' only defines private constructors and has no friends
+// egcs fails to see that there is a public static accessor function.
+// 2. the program crashes, because apparently the static variable s in
+// singleton::instance() is considered constructed although the ctor
+// exited via an exception. (crash changed to nonzero return here)
+
+class singleton {
+public:
+ static singleton& instance() {
+ static singleton s;
+ return s;
+ }
+ int check() {return initialized;}
+
+private:
+ singleton() : initialized(1) {
+ if ( counter++ == 0 ) throw "just for the heck of it";
+ initialized = 2;
+ }
+ singleton( const singleton& rhs );
+ void operator=( const singleton& rhs );
+ int initialized;
+ static int counter;
+};
+
+int singleton::counter;
+
+int main()
+{
+ while (1) {
+ try {
+ return singleton::instance().check()-2;
+ } catch (...) { }
+ }
+}
+