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Fix 10496: crash: endless recursion (symbolDatabaseCreateExprId => isSameExpr => isSameExpr ...) (#3467)

This commit is contained in:
Paul Fultz II 2021-09-25 04:55:49 -05:00 committed by GitHub
parent 2ee920dc4e
commit 5c3b69fe96
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2 changed files with 14 additions and 3 deletions
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8
lib/astutils.cpp
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@ -169,9 +169,9 @@ bool astHasToken(const Token* root, const Token * tok)
{
if (!root)
return false;
if (root == tok)
return true;
return astHasToken(root->astOperand1(), tok) || astHasToken(root->astOperand2(), tok);
while (tok->astParent() && tok != root)
tok = tok->astParent();
return root == tok;
}
bool astHasVar(const Token * tok, nonneg int varid)
@ -833,6 +833,8 @@ std::vector<ReferenceToken> followAllReferences(const Token* tok,
errors.emplace_back(var->declEndToken(), "Passed to reference.");
return {{tok, std::move(errors)}};
} else if (Token::simpleMatch(var->declEndToken(), "=")) {
if (astHasToken(var->declEndToken(), tok))
return std::vector<ReferenceToken>{};
errors.emplace_back(var->declEndToken(), "Assigned to reference.");
const Token *vartok = var->declEndToken()->astOperand2();
if (vartok == tok || (!temporary && isTemporary(true, vartok, nullptr, true) &&

9
test/testtokenize.cpp
View File

@ -409,6 +409,7 @@ private:
TEST_CASE(checkIfCppCast);
TEST_CASE(checkRefQualifiers);
TEST_CASE(checkConditionBlock);
TEST_CASE(checkUnknownCircularVar);
// #9052
TEST_CASE(noCrash1);
@ -6845,6 +6846,14 @@ private:
"}\n"));
}
void checkUnknownCircularVar()
{
ASSERT_NO_THROW(tokenizeAndStringify("void execute() {\n"
" const auto &bias = GEMM_CTX_ARG_STORAGE(bias);\n"
" auto &c = GEMM_CTX_ARG_STORAGE(c);\n"
"}\n"));
}
void noCrash1() {
ASSERT_NO_THROW(tokenizeAndStringify(
"struct A {\n"