From ea332946d3577cc75422a1ad0cbce9321e9e8c59 Mon Sep 17 00:00:00 2001 From: Nick Lewycky Date: Sun, 1 Jul 2007 03:06:30 +0000 Subject: Fix undefined behaviour reported by the new --enable-expensive-checks option. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37829 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Support/MemoryBuffer.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'lib/Support/MemoryBuffer.cpp') diff --git a/lib/Support/MemoryBuffer.cpp b/lib/Support/MemoryBuffer.cpp index 0e857021a4..43eb1813ad 100644 --- a/lib/Support/MemoryBuffer.cpp +++ b/lib/Support/MemoryBuffer.cpp @@ -251,8 +251,9 @@ MemoryBuffer *MemoryBuffer::getSTDIN() { while (size_t ReadBytes = fread(Buffer, 1, 4096*4, stdin)) FileData.insert(FileData.end(), Buffer, Buffer+ReadBytes); + FileData.push_back(0); // &FileData[Size] is invalid. So is &*FileData.end(). size_t Size = FileData.size(); MemoryBuffer *B = new STDINBufferFile(); - B->initCopyOf(&FileData[0], &FileData[Size]); + B->initCopyOf(&FileData[0], &FileData[Size-1]); return B; } -- cgit v1.2.3-18-g5258