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| author | Jason Merrill <jason@redhat.com> | 2011-06-16 18:08:57 -0400 |
|---|---|---|
| committer | Jason Merrill <jason@gcc.gnu.org> | 2011-06-16 18:08:57 -0400 |
| commit | 80390766bd24c78c10fe3a328a82a233ef46c7cb (patch) | |
| tree | 38202239f90e2ac0121457f20d26ec5b75e34473 | |
| parent | 89a27d8fa26ed41071db524875a00086fac9002a (diff) | |
| download | gcc-80390766bd24c78c10fe3a328a82a233ef46c7cb.zip gcc-80390766bd24c78c10fe3a328a82a233ef46c7cb.tar.gz gcc-80390766bd24c78c10fe3a328a82a233ef46c7cb.tar.bz2 | |
re PR c++/49251 ([C++0x][parameter pack expanding] unused parameter warning with unpacking empty tuples)
PR c++/49251
* semantics.c (finish_id_expression): Mark even dependent
variables as used.
From-SVN: r175119
| -rw-r--r-- | gcc/cp/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/cp/semantics.c | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/cpp0x/variadic113.C | 20 |
4 files changed, 31 insertions, 1 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog index 6523c94..a8baca2 100644 --- a/gcc/cp/ChangeLog +++ b/gcc/cp/ChangeLog @@ -1,5 +1,9 @@ 2011-06-16 Jason Merrill <jason@redhat.com> + PR c++/49251 + * semantics.c (finish_id_expression): Mark even dependent + variables as used. + PR c++/49420 * error.c (dump_template_argument): Don't try to omit default template args from an argument pack. diff --git a/gcc/cp/semantics.c b/gcc/cp/semantics.c index 55f9519..bad7acb 100644 --- a/gcc/cp/semantics.c +++ b/gcc/cp/semantics.c @@ -3196,7 +3196,10 @@ finish_id_expression (tree id_expression, (or an instantiation thereof). */ if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == PARM_DECL) - return convert_from_reference (decl); + { + mark_used (decl); + return convert_from_reference (decl); + } /* The same is true for FIELD_DECL, but we also need to make sure that the syntax is correct. */ else if (TREE_CODE (decl) == FIELD_DECL) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 6622a60..cc12e7b 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,8 @@ 2011-06-16 Jason Merrill <jason@redhat.com> + PR c++/49251 + * g++.dg/cpp0x/variadic113.C: New. + PR c++/49420 * g++.dg/cpp0x/variadic112.C: New. diff --git a/gcc/testsuite/g++.dg/cpp0x/variadic113.C b/gcc/testsuite/g++.dg/cpp0x/variadic113.C new file mode 100644 index 0000000..3f1bb2a --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp0x/variadic113.C @@ -0,0 +1,20 @@ +// PR c++/49251 +// { dg-options "-std=c++0x -Wunused-parameter" } + +struct A {}; +template <int> int f(A); + +template< int... Indices > +struct indices {}; + +template< class... Args > +void sink( Args&&... ) {} + +template< class T, int... Indices > +void unpack_test( T && t, indices<Indices...> ) { + sink( f<Indices>(t)... ); +} + +int main() { + unpack_test( A(), indices<>() ); +} |