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Fix crash in CFGBuilder involving implicit destructor calls and gotos jumping after an object was declared. Fixes PR 10620.

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llvm-svn: 137426
This commit is contained in:
Ted Kremenek
2011-08-12 04:09:00 +00:00
parent 4826b7f13a
commit 06b8cd7324
2 changed files with 31 additions and 6 deletions
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14
clang/lib/Analysis/CFG.cpp
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@@ -191,8 +191,8 @@ int LocalScope::const_iterator::distance(LocalScope::const_iterator L) {
int D = 0;
const_iterator F = *this;
while (F.Scope != L.Scope) {
assert (F != const_iterator()
&& "L iterator is not reachable from F iterator.");
if (F == const_iterator())
return D;
D += F.VarIter;
F = F.Scope->Prev;
}
@@ -816,10 +816,12 @@ void CFGBuilder::addLocalScopeAndDtors(Stmt* S) {
/// performed in place specified with iterator.
void CFGBuilder::insertAutomaticObjDtors(CFGBlock* Blk, CFGBlock::iterator I,
LocalScope::const_iterator B, LocalScope::const_iterator E, Stmt* S) {
BumpVectorContext& C = cfg->getBumpVectorContext();
I = Blk->beginAutomaticObjDtorsInsert(I, B.distance(E), C);
while (B != E)
I = Blk->insertAutomaticObjDtor(I, *B++, S);
if (int Cnt = B.distance(E)) {
BumpVectorContext& C = cfg->getBumpVectorContext();
I = Blk->beginAutomaticObjDtorsInsert(I, Cnt, C);
while (B != E)
I = Blk->insertAutomaticObjDtor(I, *B++, S);
}
}
/// appendAutomaticObjDtors - Append destructor CFGElements for variables with