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Fix handling of condition variables in the face of temp dtors. 

The assignment needs to be before the destruction of the temporary.
This patch calls out to addStmt, which invokes VisitDeclStmt, which has
all the correct logic for handling temporaries.

llvm-svn: 207985
This commit is contained in:
Manuel Klimek 2014-05-05 18:21:06 +00:00
parent e37f33c466
commit 75f34c1386
2 changed files with 10 additions and 13 deletions
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13
clang/lib/Analysis/CFG.cpp
View File

@ -2107,14 +2107,11 @@ CFGBlock *CFGBuilder::VisitIfStmt(IfStmt *I) {
// blocks will be pointed to be "Block".
CFGBlock *LastBlock = addStmt(I->getCond());
// Finally, if the IfStmt contains a condition variable, add both the IfStmt
// and the condition variable initialization to the CFG.
if (VarDecl *VD = I->getConditionVariable()) {
if (Expr *Init = VD->getInit()) {
autoCreateBlock();
appendStmt(Block, I->getConditionVariableDeclStmt());
LastBlock = addStmt(Init);
}
// Finally, if the IfStmt contains a condition variable, add it and its
// initializer to the CFG.
if (const DeclStmt* DS = I->getConditionVariableDeclStmt()) {
autoCreateBlock();
LastBlock = addStmt(const_cast<DeclStmt *>(DS));
}
return LastBlock;

10
clang/test/Analysis/temp-obj-dtors-cfg-output.cpp
View File

@ -611,18 +611,18 @@ int testConsistencyNestedNormalReturn(bool value) {
// CHECK: [B5 (ENTRY)]
// CHECK: Succs (1): B4
// CHECK: [B1]
// CHECK: 1: [B4.7].~C() (Implicit destructor)
// CHECK: 1: [B4.6].~C() (Implicit destructor)
// CHECK: Succs (1): B0
// CHECK: [B2]
// CHECK: 1: 0
// CHECK: 2: return [B2.1];
// CHECK: 3: [B4.7].~C() (Implicit destructor)
// CHECK: 3: [B4.6].~C() (Implicit destructor)
// CHECK: Preds (1): B4
// CHECK: Succs (1): B0
// CHECK: [B3]
// CHECK: 1: 1
// CHECK: 2: return [B3.1];
// CHECK: 3: [B4.7].~C() (Implicit destructor)
// CHECK: 3: [B4.6].~C() (Implicit destructor)
// CHECK: Preds (1): B4
// CHECK: Succs (1): B0
// CHECK: [B4]
@ -631,8 +631,8 @@ int testConsistencyNestedNormalReturn(bool value) {
// CHECK: 3: [B4.2] (ImplicitCastExpr, NoOp, const struct C)
// CHECK: 4: [B4.3]
// CHECK: 5: [B4.4] (CXXConstructExpr, struct C)
// CHECK: 6: ~C() (Temporary object destructor)
// CHECK: 7: C c = C();
// CHECK: 6: C c = C();
// CHECK: 7: ~C() (Temporary object destructor)
// CHECK: 8: c
// CHECK: 9: [B4.8].operator bool
// CHECK: 10: [B4.8]