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Fix bug 20125 - clang-format segfaults on bad config.

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The problem was in unchecked dyn_cast inside of Input::createHNodes.
Patch by Roman Kashitsyn!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215205 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2014-08-08 13:58:00 +00:00
parent 1952807c9c
commit 82acfbfe86
2 changed files with 13 additions and 1 deletions
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7
lib/Support/YAMLTraits.cpp
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@@ -326,7 +326,12 @@ Input::HNode *Input::createHNodes(Node *N) {
} else if (MappingNode *Map = dyn_cast<MappingNode>(N)) {
MapHNode *mapHNode = new MapHNode(N);
for (KeyValueNode &KVN : *Map) {
ScalarNode *KeyScalar = dyn_cast<ScalarNode>(KVN.getKey());
Node *KeyNode = KVN.getKey();
ScalarNode *KeyScalar = dyn_cast<ScalarNode>(KeyNode);
if (!KeyScalar) {
setError(KeyNode, "Map key must be a scalar");
break;
}
StringStorage.clear();
StringRef KeyStr = KeyScalar->getValue(StringStorage);
if (!StringStorage.empty()) {