https://bugs.llvm.org/show_bug.cgi?id=52536
Bug ID: 52536
Summary: The filesystem::path::format type is not declared
correctly.
Product: libc++
Version: 11.0
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
It seems that libc++ declares filesystem::path::format as a class. The
standard requires it to be an enum. This prevents programs from compiling when
-stdlib=libc++ is used. Here is a cut/paste from a cygwin session:
$ cat t.cpp
#include <filesystem>
#include <type_traits>
using namespace std;
int main(void)
{
typedef enum filesystem::path::format T1;
typedef std::underlying_type<T1>::type T2;
T1 a;
T2 b;
b = a;
}
VogelEd@XLB3502Q4E ~/tests/cppperen2.0
$ clang++ -std=c++17 t.cpp
VogelEd@XLB3502Q4E ~/tests/cppperen2.0
$ clang++ -std=c++17 -stdlib=libc++ t.cpp
t.cpp:11:7: error: assigning to 'T2' (aka 'unsigned char') from incompatible
type 'T1' (aka 'std::__1::__fs::filesystem::path::format')
b = a;
^
1 error generated.
Visual Studio 2019 also compiles the program.
The (V11) version of filesystem contains:
enum class _LIBCPP_ENUM_VIS format : unsigned char {
auto_format,
native_format,
generic_format
};
It seems g++ gets this right. They have:
enum format : unsigned char { native_format, generic_format, auto_format };
Not a significant problem, but I wanted to make you aware of it.
Thanks,
Ed Vogel
--
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
