Change SMRange to be half-open (exclusive end) instead of closed (inclusive)

This is necessary not only for representing empty ranges, but for handling
multibyte characters in the input. (If the end pointer in a range refers to
a multibyte character, should it point to the beginning or the end of the
character in a char array?) Some of the code in the asm parsers was already
assuming this anyway.

llvm-svn: 171765

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/Support/SourceMgr.cpp b/llvm/lib/Support/SourceMgr.cpp
index 65801375691..65403197c7b 100644
--- a/llvm/lib/Support/SourceMgr.cpp
+++ b/llvm/lib/Support/SourceMgr.cpp
@@ -304,7 +304,7 @@ void SMDiagnostic::print(const char *ProgName, raw_ostream &S,
   for (unsigned r = 0, e = Ranges.size(); r != e; ++r) {
     std::pair<unsigned, unsigned> R = Ranges[r];
     for (unsigned i = R.first,
-         e = std::min(R.second, (unsigned)LineContents.size())+1; i != e; ++i)
+         e = std::min(R.second, (unsigned)LineContents.size()); i != e; ++i)
       CaretLine[i] = '~';
   }