[cfe-dev] 3.8/3.9 SVN: Compile failure with enum and ternary operator

[Peter Klotz via cfe-dev]

Hi clang developers

clang 3.8 and 3.9 SVN fails to compile the C++ program below.

I already reported the bug via LLVM Bugzilla (
https://llvm.org/bugs/show_bug.cgi?id=28425) but got no response.

-------------------------------------
enum PermissionTypePk { PT_GLOBAL };
struct PermissionType
{
    static PermissionType getPermissionType() { return PermissionType(); }
    PermissionType() : m_pk(PT_GLOBAL) {}
    const PermissionTypePk m_pk; // --> removing "const" makes the program
compile
};

int main()
{
    const PermissionTypePk permissionTypePk = true ?
PermissionType::getPermissionType().m_pk : PT_GLOBAL;
    return 0;
}
-------------------------------------

[user at host test]$ clang++ -Wall -Wextra -c clang_error.cpp
clang_error.cpp:11:28: error: cannot initialize a variable of type 'const
PermissionTypePk' with an rvalue of type 'int'
    const PermissionTypePk permissionTypePk = true ?
PermissionType::getPermissionType().m_pk : PT_GLOBAL;
                           ^
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.

Removing "const" from member "m_pk" makes the program compile.

gcc 6 compiles both versions, with and without "const".


Regards, Peter.
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