[LLVMbugs] [Bug 15067] New: Assertion `LangOpts.CPlusPlus || LangOpts.C99' failed in clang::Lexer::tryReadUCN

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=15067

             Bug #: 15067
           Summary: Assertion `LangOpts.CPlusPlus || LangOpts.C99' failed
                    in clang::Lexer::tryReadUCN
           Product: clang
           Version: trunk
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: eugeni.stepanov at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


SVN at r173449

$ cat 1.c
\h
$ ./build/bin/clang -std=gnu89 -E 1.c# 1 "1.c"
# 1 "<built-in>" 1
# 1 "<built-in>" 3
# 153 "<built-in>" 3
# 1 "<command line>" 1
# 1 "<built-in>" 2
# 1 "1.c" 2
clang-3.3: ../tools/clang/lib/Lex/Lexer.cpp:2701: uint32_t
clang::Lexer::tryReadUCN(const char *&, const char *, clang::Token *):
Assertion `LangOpts.CPlusPlus || LangOpts.C99' failed.
0  clang-3.3       0x000000000112a645 llvm::sys::PrintStackTrace(_IO_FILE*) +
37
1  clang-3.3       0x000000000112ab33
2  libpthread.so.0 0x00007fc134882cb0
3  libc.so.6       0x00007fc133cd8425 gsignal + 53
4  libc.so.6       0x00007fc133cdbb8b abort + 379
5  libc.so.6       0x00007fc133cd10ee
6  libc.so.6       0x00007fc133cd1192
7  clang-3.3       0x0000000001361003 clang::Lexer::tryReadUCN(char const*&,
char const*, clang::Token*) + 1747
8  clang-3.3       0x00000000013651ca
clang::Lexer::LexTokenInternal(clang::Token&) + 4250
9  clang-3.3       0x00000000013653b5
clang::Lexer::LexTokenInternal(clang::Token&) + 4741
10 clang-3.3       0x0000000001313bfd
clang::DoPrintPreprocessedInput(clang::Preprocessor&, llvm::raw_ostream*,
clang::PreprocessorOutputOptions const&) + 605
11 clang-3.3       0x0000000001305c42
clang::PrintPreprocessedAction::ExecuteAction() + 290
12 clang-3.3       0x0000000001302e51 clang::FrontendAction::Execute() + 113
13 clang-3.3       0x00000000012e5f0d
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 909
14 clang-3.3       0x000000000112d365
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 2901
15 clang-3.3       0x000000000062c093 cc1_main(char const**, char const**, char
const*, void*) + 675
16 clang-3.3       0x0000000000628ae4 main + 3140
17 libc.so.6       0x00007fc133cc376d __libc_start_main + 237
18 clang-3.3       0x0000000000627d75

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