mmap of a zero length file returns null on some platforms, so hack around it.
llvm-svn: 13121
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@ -50,6 +50,12 @@ static void OpenFile(const std::string &Filename, unsigned &Len, char* &BufPtr){
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std::cerr << "Error: cannot open file '" << Filename << "'\n";
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exit(2);
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}
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// If mmap decided that the files were empty, it might have returned a
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// null pointer. If so, make a new, fake pointer -- it shouldn't matter
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// what it contains, because Len is 0, and it should never be read.
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if (BufPtr == 0 && Len == 0)
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BufPtr = new char[1];
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}
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static bool isNumberChar(char C) {
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