https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66735
Bug ID: 66735
Summary: [C++14] lambda init-capture fails for const references
Product: gcc
Version: 5.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: fynjycfdby at gmail dot com
Target Milestone: ---
This code fails to compile:
int main() {
int x = 0;
auto l = [&rx = static_cast<const int&>(x)]() {};
}
The error message is:
test.cpp:3:14: error: binding 'const int' to reference of type 'int&' discards
qualifiers
auto l = [&rx = static_cast<const int&>(x)]() {
But according to [expr.prim.lambda]/11 rx should be captured as auto &rx =
static_cast<const int&>(x), that is as const int&.
Tested on MacPorts g++-mp-5:
$ g++-mp-5 -v
Using built-in specs.
COLLECT_GCC=g++-mp-5
...
gcc version 5.1.0 (MacPorts gcc5 5.1.0_1)
