diff options
author | Brian Gaeke <gaeke@uiuc.edu> | 2004-04-23 17:38:17 +0000 |
---|---|---|
committer | Brian Gaeke <gaeke@uiuc.edu> | 2004-04-23 17:38:17 +0000 |
commit | 6893eadc9524de6ade68d720701c238a5b1a8ebf (patch) | |
tree | 4abce31587724a661291b61ffd6a59b0bd142dd0 /utils/fpcmp | |
parent | b61fc83ecb75e4b1dd44adc3acbd5559aa882e81 (diff) | |
download | external_llvm-6893eadc9524de6ade68d720701c238a5b1a8ebf.zip external_llvm-6893eadc9524de6ade68d720701c238a5b1a8ebf.tar.gz external_llvm-6893eadc9524de6ade68d720701c238a5b1a8ebf.tar.bz2 |
mmap of a zero length file returns null on some platforms, so hack around it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13121 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils/fpcmp')
-rw-r--r-- | utils/fpcmp/fpcmp.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/utils/fpcmp/fpcmp.cpp b/utils/fpcmp/fpcmp.cpp index 6f8298e..7e472d4 100644 --- a/utils/fpcmp/fpcmp.cpp +++ b/utils/fpcmp/fpcmp.cpp @@ -50,6 +50,12 @@ static void OpenFile(const std::string &Filename, unsigned &Len, char* &BufPtr){ std::cerr << "Error: cannot open file '" << Filename << "'\n"; exit(2); } + + // If mmap decided that the files were empty, it might have returned a + // null pointer. If so, make a new, fake pointer -- it shouldn't matter + // what it contains, because Len is 0, and it should never be read. + if (BufPtr == 0 && Len == 0) + BufPtr = new char[1]; } static bool isNumberChar(char C) { |