llvm-project/clang/test/AST/ast-dump-wchar.cpp

// RUN: %clang_cc1 -std=c++11 -ast-dump %s -triple x86_64-linux-gnu | FileCheck %s 

char c8[] = u8"test\0\\\"\a\b\f\n\r\t\v\234";
// CHECK: StringLiteral {{.*}} lvalue u8"test\000\\\"\a\b\f\n\r\t\v\234"

char16_t c16[] = u"test\0\\\"\t\a\b\234\u1234";
// CHECK: StringLiteral {{.*}} lvalue u"test\000\\\"\t\a\b\234\u1234"

char32_t c32[] = U"test\0\\\"\t\a\b\234\u1234\U0010ffff"; // \
// CHECK: StringLiteral {{.*}} lvalue U"test\000\\\"\t\a\b\234\u1234\U0010FFFF"

wchar_t wc[] = L"test\0\\\"\t\a\b\234\u1234\xffffffff"; // \
// CHECK: StringLiteral {{.*}} lvalue L"test\000\\\"\t\a\b\234\x1234\xFFFFFFFF"