[cfe-dev] Clang ASTVisitor Extern Variable usage

[Sunny Billava via cfe-dev]

Hello All,
For a clang tool based on RecursiveASTVisitor, would like to detect the definition of an extern variable.
For the below code file samples, while traversing the Main.c, can we detect the "var" is defined & initialized in test.c


Below are the file definition

<<<<Main.c>>>>
#include "h1.h"
int main()
{
        var = 10;
}

<<<<h1.h>>>>
extern int var;

<<<<test.c>>>>
#include "h1.h"
int var = 11;

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