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Do not execute nested finally block twice

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GitHub: Fixes #1054.
This commit is contained in:
David Nadlinger 2015-08-31 17:30:44 +03:00
parent a5075f10b7
commit 2b77da4e2e
2 changed files with 7 additions and 3 deletions
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3
ir/irfunction.cpp
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@ -138,7 +138,7 @@ void ScopeStack::runCleanups(
}
// Insert the unconditional branch to the first cleanup block.
irs->ir->CreateBr(cleanupScopes.back().beginBlock);
irs->ir->CreateBr(cleanupScopes[sourceScope - 1].beginBlock);
// Update all the control flow in the cleanups to make sure we end up where
// we want.
@ -353,6 +353,7 @@ llvm::BasicBlock* ScopeStack::emitLandingPad() {
it != end; ++it
) {
// Insert any cleanups in between the last catch we ran and this one.
assert(lastCleanup >= it->cleanupScope);
if (lastCleanup > it->cleanupScope) {
landingPad->setCleanup(true);
llvm::BasicBlock* afterCleanupBB = llvm::BasicBlock::Create(

7
ir/irfunction.h
View file

@ -322,7 +322,8 @@ private:
///
std::vector<JumpTarget> continueTargets;
///
/// cleanupScopes[i] contains the information to go from
/// currentCleanupScope() == i + 1 to currentCleanupScope() == i.
std::vector<CleanupScope> cleanupScopes;
///
@ -361,7 +362,9 @@ llvm::CallSite ScopeStack::callOrInvoke(llvm::Value* callee, const T &args,
}
if (currentLandingPads().empty()) {
// Have not encountered.
// Have not encountered any catches (for which we would push a scope) or
// calls to throwing functions (where we would have already executed
// this if) in this cleanup scope yet.
currentLandingPads().push_back(0);
}