http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54293
Jiří Paleček <jpalecek at web dot de> changed:
What |Removed |Added
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CC| |jpalecek at web dot de
--- Comment #4 from Jiří Paleček <jpalecek at web dot de> 2012-08-17 14:54:50
UTC ---
Is that even a bug? In the standard (8.5.3/5), there is:
— If the initializer expression
— is an xvalue, *class prvalue*, array prvalue or function lvalue and “cv1 T1”
is reference-
compatible with “cv2 T2”, or
— has a class type (i.e., T2 is a class type), where T1 is not
reference-related to T2, and can be
implicitly converted to an xvalue, class prvalue, or function lvalue of type
“cv3 T3”, where
“cv1 T1” is reference-compatible with “cv3 T3”,
I don't think an rvalue of type int (which you have there as the initializer)
is a class prvalue, so the initialization should proceed by the next stanza,
ie. creating a temporary of type int thereby not extending the lifetime of
ValueHolder temporary.
