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YAMLParser: Fix invalid reads when encountering incorrectly quoted scalar.

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Fixes PR12632.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164701 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2012-09-26 15:52:15 +00:00
parent be3338a5de
commit 696e06e453
1 changed files with 7 additions and 0 deletions
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7
lib/Support/YAMLParser.cpp
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@ -903,6 +903,7 @@ bool Scanner::consume(uint32_t Expected) {
void Scanner::skip(uint32_t Distance) {
Current += Distance;
Column += Distance;
assert(Current <= End && "Skipped past the end");
}
bool Scanner::isBlankOrBreak(StringRef::iterator Position) {
@ -1239,6 +1240,12 @@ bool Scanner::scanFlowScalar(bool IsDoubleQuoted) {
}
}
}
if (Current == End) {
setError("Expected quote at end of scalar", Current);
return false;
}
skip(1); // Skip ending quote.
Token T;
T.Kind = Token::TK_Scalar;