[llvm-bugs] [Bug 38879] New: Compiler build failure after https://reviews.llvm.org/D51723

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=38879

            Bug ID: 38879
           Summary: Compiler build failure after
                    https://reviews.llvm.org/D51723
           Product: new-bugs
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: abhilash_bhandari at yahoo.co.in
                CC: llvm-bugs at lists.llvm.org

LLVM fails to build
With the configure script:
cmake -G"Unix Makefiles" -DLLVM_BUILD_LLVM_DYLIB:STRING=ON
-DLLVM_LINK_LLVM_DYLIB=ON -DLLVM_ENABLE_LIBEDIT=OFF
-DCMAKE_BUILD_TYPE:STRING=RELEASE -DCLANG_DEFAULT_LINKER:STRING=lld
-DLLVM_BUILD_EXTERNAL_COMPILER_RT=ON -DLLVM_TARGETS_TO_BUILD:STRING=X86
-DLLVM_ENABLE_ASSERTIONS:BOOL=ON -DCLANG_REPOSITORY_STRING=CLANG:
-DLLVM_ENABLE_WERROR=ON -DCMAKE_CXX_FLAGS=\'-Wno-error=pedantic\' \llvm

The error is:

llvm/lib/XRay/BlockVerifier.cpp: In member function ‘llvm::Error
llvm::xray::BlockVerifier::transition(llvm::xray::BlockVerifier::State)’:

llvm/lib/XRay/BlockVerifier.cpp:97:49: error: converting to ‘const
std::tuple<llvm::xray::BlockVerifier::State, std::bitset<11ul> >’ from
initializer list would use explicit constructor ‘constexpr std::tuple<_T1,
_T2>::tuple(const _T1&, const _T2&) [with _T1 =
llvm::xray::BlockVerifier::State; _T2 = std::bitset<11ul>]’
                           {State::EndOfBuffer, {}}}};
                                                    ^
llvm/lib/XRay/BlockVerifier.cpp:97:49: error: converting to ‘const
std::tuple<llvm::xray::BlockVerifier::State, std::bitset<11ul> >’ from
initializer list would use explicit constructor ‘constexpr std::tuple<_T1,
_T2>::tuple(const _T1&, const _T2&) [with _T1 =
llvm::xray::BlockVerifier::State; _T2 = std::bitset<11ul>]’

....

System Compiler: GCC 5.4.0

The error is due to the use of an initializer list in
lib/XRay/BlockVerifier.cpp.

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