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| author | Artemiy Volkov <artemiyv@acm.org> | 2017-03-20 13:47:57 -0700 |
|---|---|---|
| committer | Keith Seitz <keiths@redhat.com> | 2017-03-20 13:47:57 -0700 |
| commit | 15c0a2a9305648095f5586a02b5a5017e1643e99 (patch) | |
| tree | bbe3190a2152bb46e3f3412041b226a1e0c1c23f /gdb/guile/lib | |
| parent | aa0061181ab00081e9907447561e589d6edee9f2 (diff) | |
| download | gdb-15c0a2a9305648095f5586a02b5a5017e1643e99.zip gdb-15c0a2a9305648095f5586a02b5a5017e1643e99.tar.gz gdb-15c0a2a9305648095f5586a02b5a5017e1643e99.tar.bz2 | |
Add rvalue references to overloading resolution
This patch introduces changes to rank_one_type() dealing with ranking an rvalue
reference type when selecting a best viable function from a set of candidate
functions. The 4 new added rules for rvalue references are:
1) An rvalue argument cannot be bound to a non-const lvalue reference parameter
and an lvalue argument cannot be bound to an rvalue reference parameter.
[C++11 13.3.3.1.4p3]
2) If a conversion to one type of reference is an identity conversion, and a
conversion to the second type of reference is a non-identity conversion, choose
the first type. [C++11 13.3.3.2p3]
3) An rvalue should be first tried to bind to an rvalue reference, and then to
an lvalue reference. [C++11 13.3.3.2p3]
4) An lvalue reference to a function gets higher priority than an rvalue
reference to a function. [C++11 13.3.3.2p3]
This patch is not exactly correct. See c++/15372 for tracking overload
resolution bugs.
gdb/ChangeLog
PR gdb/14441
* gdbtypes.c (rank_one_type): Implement overloading
resolution rules regarding rvalue references.
Diffstat (limited to 'gdb/guile/lib')
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