https://bugs.llvm.org/show_bug.cgi?id=43335
Bug ID: 43335
Summary: Compiler recurses infinitely and exausts stack
Product: clang
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Frontend
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
This code exhausts the stack:
struct Foo {
template <class... T>
Foo(T... a, decltype(Foo(a...))* = nullptr) {}
} foo(1);
https://godbolt.org/z/ahHavv
I wasn't sure if I should even report this because the code is obviously
broken. I decided to do so because:
1 - Maybe it is worth looking into as it could be indication of architectural
problem
2 - The error message could be better. I guess it should be possible to detect
this scenario and avoid infinite recursion.
3 - With this slight variation, clang give a more sane error message:
struct Foo {
template <class... T>
Foo(T... a, decltype(Foo(1))* = nullptr) {}
} foo(1);
https://godbolt.org/z/eo8zAX
Fun fact: Both GCC and MSVC do not like this code.
https://godbolt.org/z/olrorn
https://godbolt.org/z/BeDsBY
--
You are receiving this mail because:
You are on the CC list for the bug._______________________________________________
llvm-bugs mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
