diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/configure.ac b/configure.ac index 35e80904d58d..e3fa28c32298 100644 --- a/configure.ac +++ b/configure.ac @@ -7204,9 +7204,11 @@ AC_SUBST([HAVE_GCC_FNO_SIZED_DEALLOCATION]) AC_MSG_CHECKING([whether $CXX_BASE supports a working C++20 consteval]) dnl ...that does not suffer from <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96994> "Missing code -dnl from consteval constructor initializing const variable" or +dnl from consteval constructor initializing const variable", dnl <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98752> "wrong 'error: ‘this’ is not a constant -dnl expression' with consteval constructor": +dnl expression' with consteval constructor", or <https://bugs.llvm.org/show_bug.cgi?id=50063> "code +dnl using consteval: 'clang/lib/CodeGen/Address.h:38: llvm::Value* +dnl clang::CodeGen::Address::getPointer() const: Assertion `isValid()' failed.'": AC_LANG_PUSH([C++]) save_CXXFLAGS=$CXXFLAGS CXXFLAGS="$CXXFLAGS $CXXFLAGS_CXX11" @@ -7222,6 +7224,15 @@ AC_RUN_IFELSE([AC_LANG_PROGRAM([ S1 x; S2(): x(0) {} }; + + struct S3 { + consteval S3() {} + union { + int a; + unsigned b = 0; + }; + }; + void f() { S3(); } ], [ return (s.i == 1) ? 0 : 1; ])], [ |