diff options
| -rw-r--r-- | tools/clang-cc/clang-cc.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/clang-cc/clang-cc.cpp b/tools/clang-cc/clang-cc.cpp index 5a5ffc32af..d257c432fc 100644 --- a/tools/clang-cc/clang-cc.cpp +++ b/tools/clang-cc/clang-cc.cpp @@ -972,7 +972,13 @@ static void DefineBuiltinMacro(std::vector<char> &Buf, const char *Macro, // Per GCC -D semantics, the macro ends at \n if it exists. const char *End = strpbrk(Equal, "\n\r"); - if (End == 0) End = Equal+strlen(Equal); + if (End) { + fprintf(stderr, "warning: macro '%s' contains embeded newline, text " + "after the newline is ignored.\n", + std::string(Macro, Equal).c_str()); + } else { + End = Equal+strlen(Equal); + } Buf.insert(Buf.end(), Equal+1, End); } else { |