http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56699
Bug #: 56699
Summary: Failed for sizeof (non-static member) in lambda
expression
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: [email protected]
ReportedBy: [email protected]
Here are the minimal testcases:
Case 1:
struct A
{
int a;
};
struct T
{
int x;
T() : x([]{
sizeof(::A::a);
return 0;
}())
{}
};
Case 2:
struct A
{
int a;
};
void f()
{
[]{sizeof(A::a);};
}
Tested at coliru.stacked-crooked.com (g++ -v shows it's a x86-64 linux host):
Case 1:
$ g++-4.8 -fsyntax-only -std=c++11 main.cpp
main.cpp: In lambda function:
main.cpp:11:15: error: type 'A' is not a base type for type 'T'
sizeof(::A::a);
^
Case 2:
$ g++-4.8 -fsyntax-only -std=c++11 main.cpp
main.cpp: In lambda function:
main.cpp:10:15: internal compiler error: Segmentation fault
[]{sizeof(A::a);};
^
I have exactly the same errors for both cases using mingw-builds
4.8.0(i686-w64-mingw32) compiled today from sf.net on my Win7 x64 host.
>From some others, I've heard Case 1 is accepted by g++-4.8 compiled just now on
Ubuntu12.04, but the ICE still exists for Case 2.
G++ 4.7 accepts both cases.
