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| author | Jason Merrill <jason@redhat.com> | 2013-02-13 13:17:39 -0500 |
|---|---|---|
| committer | Jason Merrill <jason@gcc.gnu.org> | 2013-02-13 13:17:39 -0500 |
| commit | 43c2d791b4380088012fe812a8be156e0f593ee5 (patch) | |
| tree | 5451de9306c729da082d70e09debb785aa97a0cf | |
| parent | 70fc7c6c3dff619348c917b619bf52ac78a6ced1 (diff) | |
| download | gcc-43c2d791b4380088012fe812a8be156e0f593ee5.zip gcc-43c2d791b4380088012fe812a8be156e0f593ee5.tar.gz gcc-43c2d791b4380088012fe812a8be156e0f593ee5.tar.bz2 | |
re PR c++/55710 ([C++11] Linkage errors with lambdas)
PR c++/55710
* semantics.c (maybe_add_lambda_conv_op): Mark static thunk
TREE_USED.
From-SVN: r196025
| -rw-r--r-- | gcc/cp/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/cp/semantics.c | 2 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/cpp0x/lambda/lambda-conv7.C | 20 |
3 files changed, 26 insertions, 0 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog index ec1e7f2..7cb0653 100644 --- a/gcc/cp/ChangeLog +++ b/gcc/cp/ChangeLog @@ -1,5 +1,9 @@ 2013-02-13 Jason Merrill <jason@redhat.com> + PR c++/55710 + * semantics.c (maybe_add_lambda_conv_op): Mark static thunk + TREE_USED. + PR c++/55879 * semantics.c (cxx_bind_parameters_in_call): Undo DECL_BY_REFERENCE. diff --git a/gcc/cp/semantics.c b/gcc/cp/semantics.c index 46c2e64..95158a5 100644 --- a/gcc/cp/semantics.c +++ b/gcc/cp/semantics.c @@ -9559,6 +9559,8 @@ maybe_add_lambda_conv_op (tree type) body = begin_function_body (); compound_stmt = begin_compound_stmt (0); + /* decl_needed_p needs to see that it's used. */ + TREE_USED (statfn) = 1; finish_return_stmt (decay_conversion (statfn, tf_warning_or_error)); finish_compound_stmt (compound_stmt); diff --git a/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-conv7.C b/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-conv7.C new file mode 100644 index 0000000..89e4e4b --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-conv7.C @@ -0,0 +1,20 @@ +// PR c++/55710 +// { dg-do link { target c++11 } } + +template <class T> +struct X { + static void (*code) (); +}; + +template <class T> +void (*X<T>::code) () = []{}; // Line 7 + +struct Y { + void (*code) () = []{} ; // Line 10 + void operator()() { code(); } +}; + +int main () { + X<int>::code(); + Y()(); +} |