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re PR c++/18064 (gcc accepts different pointer types as covariant return types)

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cp:
	PR c++/18064
	* search.c (check_final_overrider): Deprecate gnu covariant extension.
doc:
	PR c++/18064
	* doc/extend.texi (Deprecated Features): Deprecate G++ covariant
	extension.
testsuite:
	PR c++/18064
	* g++.old-deja/g++.mike/p811.C: Avoid covariant extension.

From-SVN: r89946
This commit is contained in:
Nathan Sidwell 2004-11-01 18:24:33 +00:00 committed by Nathan Sidwell
parent 464f49d80d
commit ae209f284c
6 changed files with 29 additions and 2 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2004-11-01 Nathan Sidwell <nathan@codesourcery.com>
PR c++/18064
* doc/extend.texi (Deprecated Features): Deprecate G++ covariant
extension.
2004-10-16 Daniel Berlin <dberlin@dberlin.org>
Fix PR tree-optimization/17672

5
gcc/cp/ChangeLog
View File

@ -1,3 +1,8 @@
2004-11-01 Nathan Sidwell <nathan@codesourcery.com>
PR c++/18064
* search.c (check_final_overrider): Deprecate gnu covariant extension.
2004-10-31 Gabriel Dos Reis <gdr@integrable-solutions.net>
Convert diagnostics to use quoting flag q 9/n

6
gcc/cp/search.c
View File

@ -1830,6 +1830,12 @@ check_final_overrider (tree overrider, tree basefn)
over_return = non_reference (TREE_TYPE (over_type));
if (CLASS_TYPE_P (over_return))
fail = 2;
else
{
cp_warning_at ("deprecated covariant return type for %q#D",
overrider);
cp_warning_at (" overriding %q#D", basefn);
}
}
else
fail = 2;

5
gcc/doc/extend.texi
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@ -9711,6 +9711,11 @@ parameters, as C++ demands. This feature has been removed, except where
it is required for backwards compatibility @xref{Backwards Compatibility}.
@end table
G++ allows a virtual function returning @samp{void *} to be overridden
by one returning a different pointer type. This extension to the
covariant return type rules is now deprecated and will be removed from a
future version.
The named return value extension has been deprecated, and is now
removed from G++.

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2004-11-01 Nathan Sidwell <nathan@codesourcery.com>
PR c++/18064
* g++.old-deja/g++.mike/p811.C: Avoid covariant extension.
2004-10-31 Mark Mitchell <mark@codesourcery.com>
PR c++/15172

4
gcc/testsuite/g++.old-deja/g++.mike/p811.C
View File

@ -511,14 +511,14 @@ inline istream& WS(istream& str) { return ws(str); }
class Y {
public:
Y() {}
virtual const char *stringify() = 0;
virtual const char *stringify() = 0;
virtual char *stringify2() const = 0; // { dg-error "overriding" }
};
class X: public Y {
public:
X(): Y() {}
char *stringify(); // { dg-error "candidate" }
const char *stringify(); // { dg-error "candidate" }
const char *stringify2() const; // { dg-error "candidate|conflicting return type" }
};