https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106864
Bug ID: 106864
Summary: Unexpected capture of "constexpr int" variable inside
lambda
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: a.elovikov at gmail dot com
Target Milestone: ---
void bad() {
constexpr int x = 1;
auto Outer = [&]() {
auto L = [=]() {
for (int i = 0; i < x; ++i) {
}
};
static_assert(sizeof(L) == 1); // fails
};
}
void good() {
constexpr int x = 1;
auto L = [=]() {
for (int i = 0; i < x; ++i) {
}
};
static_assert(sizeof(L) == 1); // passes
}
Not sure if that's a bug from the standard conformance point of view, but I'd
expect the L not to capture constexpr variable in both cases.
Sizeof is one in both cases with clang and (MSVC v19.latest + "/std:c++latest
/c") on godbolt.
