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author | Chris Lattner <sabre@nondot.org> | 2007-11-18 18:52:28 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2007-11-18 18:52:28 +0000 |
commit | e098a64cb7453717d85e63b76cfca71b78784241 (patch) | |
tree | 63117495794002fdbca55b298053fb06928e6866 /lib | |
parent | bc04457894af10abf0e3c975553cf6ed7ba0961b (diff) | |
download | external_llvm-e098a64cb7453717d85e63b76cfca71b78784241.zip external_llvm-e098a64cb7453717d85e63b76cfca71b78784241.tar.gz external_llvm-e098a64cb7453717d85e63b76cfca71b78784241.tar.bz2 |
Fix the Linker testcase regressions, by making MemoryBuffer::getFileOrSTDIN return
a valid but empty buffer if stdin is empty.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44219 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r-- | lib/Support/MemoryBuffer.cpp | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/lib/Support/MemoryBuffer.cpp b/lib/Support/MemoryBuffer.cpp index f8779e1..2000377 100644 --- a/lib/Support/MemoryBuffer.cpp +++ b/lib/Support/MemoryBuffer.cpp @@ -117,6 +117,24 @@ MemoryBuffer *MemoryBuffer::getNewMemBuffer(unsigned Size, } +/// getFileOrSTDIN - Open the specified file as a MemoryBuffer, or open stdin +/// if the Filename is "-". If an error occurs, this returns null and fills +/// in *ErrStr with a reason. If stdin is empty, this API (unlike getSTDIN) +/// returns an empty buffer. +MemoryBuffer *MemoryBuffer::getFileOrSTDIN(const char *FilenameStart, + unsigned FnSize, + std::string *ErrStr, + int64_t FileSize) { + if (FnSize != 1 || FilenameStart[0] != '-') + return getFile(FilenameStart, FnSize, ErrStr, FileSize); + MemoryBuffer *M = getSTDIN(); + if (M) return M; + + // If stdin was empty, M is null. Cons up an empty memory buffer now. + const char *EmptyStr = ""; + return MemoryBuffer::getMemBuffer(EmptyStr, EmptyStr, "<stdin>"); +} + //===----------------------------------------------------------------------===// // MemoryBufferMMapFile implementation. //===----------------------------------------------------------------------===// |