| Issue |
53146
|
| Summary |
libclang not working as expected
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
BaoshanPang
|
I am trying to use libclang to handle a c header file, but run into this issue:
This is the header file:
```
typedef union {
int i;
int j;
int k;
} bad_union;
union good_union {
int m;
int n;
};
```
This is the code to demo the issue:
```
#include "clang-c/CXString.h"
#include <clang-c/Index.h>
#include <iostream>
using namespace std;
int main() { Use of undeclared identifier 'CXIndex'
CXIndex index = clang_createIndex(0, 0);
CXTranslationUnit unit = clang_parseTranslationUnit(
index, "t.h", nullptr, 0, nullptr, 0, CXTranslationUnit_None);
if (unit == nullptr) {
cerr << "Unable to parse translation unit. Quitting." << endl;
exit(-1);
}
CXCursor cursor = clang_getTranslationUnitCursor(unit);
clang_visitChildren(
cursor,
[](CXCursor c, CXCursor parent, CXClientData client_data) {
if (clang_getCursorKind(c) == CXCursor_FieldDecl){
cout << clang_getCString(clang_getCursorSpelling(c)) << endl;
}
return CXChildVisit_Recurse;
},
nullptr);
clang_disposeTranslationUnit(unit);
clang_disposeIndex(index);
}
```
After compiling, linking and running I get such result:
```
$ ./h2c
i
j
k
i
j
k
m
n
```
i.e, for the 'bad_union' every field has been handled twice while in the 'good_union' every field is only handled once which is expected by me.
What's wrong in my code? and How to avoid the twice traversal for the case like 'bad_union'?
Thanks,
Baoshan
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