[cfe-dev] CodeCompletion for C++ Code in Buffers

[fmclang]

David Chisnall-4 wrote
> You can just specify a name ("
> <unsaved file>
> " or similar) and it will work fine.

Hi David,

thanks for your reply.
I already tried that with no success.
My test is a simple sequence of
clang_createIndex, clang_parseTranslationUnit and clang_codeCompleteAt.


-----------------------------------------------

const char* tmpCpp =
"struct MyStruct { void myFunc(int i); };\r\n"
"int main()\r\n"
"{\r\n"
"   MyStruct s;\r\n"
"   s.\r\n";

#define SRC_FILE "<unsaved_file>"

int main()
{
    CXIndex idx = clang_createIndex(1, 0);
    CXUnsavedFile* uf = new CXUnsavedFile[1];
    uf[0].Filename = SRC_FILE;
    uf[0].Contents = tmpCpp;
    uf[0].Length = strlen(tmpCpp);
      
    CXTranslationUnit u = clang_parseTranslationUnit(idx, SRC_FILE, nullptr,
0, uf, 1, 0);
    CXCodeCompleteResults* res = clang_codeCompleteAt(u, SRC_FILE, 5, 6, uf,
1, clang_defaultCodeCompleteOptions());
}

-----------------------------------------------


If i define SRC_FILE to a real file of whatever content, everything works
fine.
But if the file does not exist, clang crashes in

clang_parseTranslationUnit_Impl()

at this line:

if (isASTReadError(Unit ? Unit.get() : ErrUnit.get())) <--------------


The problem is that both Unit and ErrUnit are nulltr and there is no
further check in isASTReadError() for nullptr. Is this a bug i did i make
something wrong?


Cheers






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