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

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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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171765 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jordan Rose
2013-01-07 19:00:49 +00:00
parent 7aa1c321f0
commit 3ebe59c892
9 changed files with 185 additions and 174 deletions
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2
lib/Support/SourceMgr.cpp
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@@ -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] = '~';
}