https://llvm.org/bugs/show_bug.cgi?id=26227
Bug ID: 26227
Summary: hasAncestor matcher crashes on certain constructs
Product: clang
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: dch...@google.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
We hit this assert when we were testing a tool to automatically rename things:
$ third_party/llvm-build/Release+Asserts/bin/rewrite_to_chrome_style test.cc
Error while trying to load a compilation database:
Could not auto-detect compilation database for file "test.cc"
No compilation database found in /usr/local/google/home/dcheng/src/chrome/src
or any parent directory
json-compilation-database: Error while opening JSON database: No such file or
directory
Running without flags.
rewrite_to_chrome_style:
/usr/local/google/ssd/src/chrome/src/third_party/llvm/tools/clang/lib/ASTMatchers/ASTMatchFinder.cpp:637:
bool
clang::ast_matchers::internal::{anonymous}::MatchASTVisitor::memoizedMatchesAncestorOfRecursively(const
clang::ast_type_traits::DynTypedNode&, const
clang::ast_matchers::internal::DynTypedMatcher&,
clang::ast_matchers::internal::BoundNodesTreeBuilder*,
clang::ast_matchers::internal::ASTMatchFinder::AncestorMatchMode): Assertion
`!Parents.empty() && "Found node that is not in the parent map."' failed.
Aborted (core dumped)
The reduced repro from danakj@:
$ cat test.cc
class MyClass {
int c[1];
public:
static MyClass Create() { return MyClass(); }
};
>From our debugging, it looks like the assert occurs when trying to match
ancestors of the initializer in the compiler-generated move ctor.
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