[cfe-dev] clang compiling complex reports err

[way_lzl at sina.com]

If I use MSVC's math.h, clang will report err I have formed a simple case to show it:
 
struct _complex {
        double x,y;
        } ;
 
#if SHOWERR
void foo( struct _complex _Complex) {
 _Complex.x = 0;
}
#else
void foo( struct _complex cc) { 
 cc.x = 0;
}
#endif

int main()
{
 struct _complex cc;
 foo(cc);
}
 
clang aa.cpp -DSHOWERR=1
aa.cpp(7) :  error: '_Complex struct' is invalid
void foo( struct _complex _Complex) {
                          ^
 
It seems _Complex is a reserved key word. Any suggestion? 
 
Thanks
--------------------------------
--Zhanglin
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