https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96743
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |9.4 Status|UNCONFIRMED |RESOLVED See Also| |https://gcc.gnu.org/bugzill | |a/show_bug.cgi?id=63707 Resolution|--- |FIXED Keywords|ice-on-valid-code |ice-on-invalid-code --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- GCC 9.4+ gives the correct error message: <source>:23:1: error: initializer for flexible array member 'BraceTest::BraceTestArrayEntries BraceTest::_entries []' 23 | BraceTest::BraceTest() : _entries { {"FirstAction", [this]( const char *data) {this->Foo( data );} } } | ^~~~~~~~~ Fixed in 9.4 and above I suspect the patch which fixes PR 63707 fixed this one.