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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++.dg/compat/init/elide1_main.C
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Diffstat (limited to 'gcc/testsuite/g++.dg/compat/init/elide1_main.C')
-rw-r--r--gcc/testsuite/g++.dg/compat/init/elide1_main.C25
1 files changed, 25 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/compat/init/elide1_main.C b/gcc/testsuite/g++.dg/compat/init/elide1_main.C
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index 000000000..c08d02fff
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+++ b/gcc/testsuite/g++.dg/compat/init/elide1_main.C
@@ -0,0 +1,25 @@
+// Test that the destructor for a temporary passed by value isn't run
+// until end of full-expression, as per [class.copy]:
+
+// Whenever a temporary class object is copied using a copy constructor,
+// and this object and the copy have the same cv-unqualified type, an
+// implementation is permitted to treat the original and the copy as two
+// different ways of referring to the same object and not perform a copy
+// at all, even if the class copy constructor or destructor have side
+// effects.... In these cases, the
+// object is destroyed at the later of times when the original and the
+// copy would have been destroyed without the optimization.
+
+// Here, the temporary would be destroyed later than the parm, so either we
+// must suppress the optimization in this case or destroy value parms in the
+// caller.
+
+// Split into pieces for binary compatibility testing October 2002
+
+extern void elide1_x (void);
+
+int
+main ()
+{
+ elide1_x ();
+}