https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67274
Bug ID: 67274
Summary: Inconsistent `this->` required when calling member
function in a lambda capturing `this` through another
function
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: vittorio.romeo at outlook dot com
Target Milestone: ---
Passing a `this`-capturing generic lambda (to a template function) that calls a
member function of `this` without an explicit `this->` results in an error:
error: cannot call member function 'void Example::foo(int)' without object
call([this](auto x){ foo(x); });`
If the lambda is not generic, or if the lambda is not passed to any other
function but called in place, it compiles without an explicit `this->`.
For reference, clang 3.6+ is cool with the code in all situations.
---
Minimal example:
http://melpon.org/wandbox/permlink/M2eH3FUOentPfieM
template<typename TF>
void call(TF&& f)
{
f(1);
}
struct Example
{
void foo(int){ }
void bar()
{
call([this](auto x){ foo(x); });
}
};
int main()
{
Example{}.bar();
return 0;
}
---
StackOverflow question with more examples:
http://stackoverflow.com/questions/32097759
