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re PR c++/71105 (lambdas with default captures improperly have function pointer conversions)

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/cp
2016-05-29  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/71105
	* lambda.c (maybe_add_lambda_conv_op): Early return also when
	LAMBDA_EXPR_DEFAULT_CAPTURE_MODE != CPLD_NONE.

/testsuite
2016-05-29  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/71105
	* g++.dg/cpp0x/lambda/lambda-conv11.C: New.
	* g++.dg/cpp1y/lambda-conv1.C: Likewise.
	* g++.dg/cpp1y/lambda-conv2.C: Likewise.

From-SVN: r236859
This commit is contained in:
Paolo Carlini 2016-05-29 08:05:30 +00:00 committed by Paolo Carlini
parent 4acc363412
commit b6d4f8e854
4 changed files with 53 additions and 0 deletions
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7
gcc/testsuite/ChangeLog
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@ -1,3 +1,10 @@
2016-05-29 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/71105
* g++.dg/cpp0x/lambda/lambda-conv11.C: New.
* g++.dg/cpp1y/lambda-conv1.C: Likewise.
* g++.dg/cpp1y/lambda-conv2.C: Likewise.
2016-05-27 Jan Hubicka <hubicka@ucw.cz>
* gcc.dg/tree-ssa/prefetch-5.c: Remove xfail.

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gcc/testsuite/g++.dg/cpp0x/lambda/lambda-conv11.C Normal file
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// PR c++/71105
// { dg-do compile { target c++11 } }
void foo()
{
int i;
static_cast<void(*)()>([i]{}); // { dg-error "invalid static_cast" }
static_cast<void(*)()>([=]{}); // { dg-error "invalid static_cast" }
static_cast<void(*)()>([&]{}); // { dg-error "invalid static_cast" }
}

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gcc/testsuite/g++.dg/cpp1y/lambda-conv1.C Normal file
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// PR c++/71105
// { dg-do compile { target c++14 } }
void foo()
{
int i;
static_cast<void(*)(int)>([i](auto){}); // { dg-error "invalid static_cast" }
static_cast<void(*)(int)>([=](auto){}); // { dg-error "invalid static_cast" }
static_cast<void(*)(int)>([&](auto){}); // { dg-error "invalid static_cast" }
static_cast<float(*)(float)>([i](auto x){ return x; }); // { dg-error "invalid static_cast" }
static_cast<float(*)(float)>([=](auto x){ return x; }); // { dg-error "invalid static_cast" }
static_cast<float(*)(float)>([&](auto x){ return x; }); // { dg-error "invalid static_cast" }
}

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gcc/testsuite/g++.dg/cpp1y/lambda-conv2.C Normal file
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// PR c++/71105
// { dg-do compile { target c++14 } }
template <typename T> T declval();
template <typename, typename> struct is_same
{ static constexpr bool value = false; };
template <typename T> struct is_same<T, T>
{ static constexpr bool value = true; };
template <class F>
struct indirected : F {
indirected(F f) : F(f) {}
template <class I>
auto operator()(I i) -> decltype(declval<F&>()(*i)) {
return static_cast<F&>(*this)(*i);
}
};
int main() {
auto f = [=](auto i) { return i + i; };
auto i = indirected<decltype(f)>{f};
static_assert(is_same<decltype(i(declval<int*>())), int>::value, "");
}