Clang error expected unqualified-id in comment when switching on comment parsing #153673
Description
I'm using the following header file to parse:
#pragma once
// My namespace
namespace X {
namespace Y {
class A
{
public:
A() = default;
virtual ~A() = default;
virtual void foo() const;
};
} // namespace Y
} // namespace XI Include this header in a cpp file:
#include "A.h"
int main(int argc, char **argv)
{
X::Y::A a;
a.foo();
return 0;
}Of course the class has an implementation:
#include "A.h"
#include <iostream>
using namespace X;
using namespace Y;
void A::foo() const
{
std::cout << "A::foo()" << std::endl;
}This set is a simple set to try playing with the AST parser.
When running the parser and switching on comment parsing:
clang::Preprocessor &preProcessor = compilerInstance.getPreprocessor();
preProcessor.SetCommentRetentionState(true, true);I'm getting errors on the commented lines:
Caught exception: Parsing failed due to: [Error] "code/applications/simpleMain/include/A.h":16: expected unqualified-id
[Error] "code/applications/simpleMain/include/A.h":3: expected unqualified-id
[Error] "code/applications/simpleMain/include/A.h":15: expected unqualified-id
[Error] "code/applications/simpleMain/include/A.h":16: expected unqualified-idI have no idea why clang would generate errors in this case. It may be that I'm doing something wrong, but this seems incorrect.
When I change one of the comment lines to use three forward slashes instead of two, I do get a comment callback, but still the same errors.
I'm using llvm 20.0.0git