Bootstrap failure in libstdc++-v3 on GNU/Linux x86

[Eric Botcazou]

> I get a very obscure bootstrap failure for mainline:
>
> In file included from
> /home/fw/src/gnu/gcc/libstdc++-v3/src/complex_io.cc:30:
> /tmp/gcc/i686-pc-linux-gnu/libstdc++-v3/include/complex: In member
> function `long double& std::complex<long double>::real()':
> /tmp/gcc/i686-pc-linux-gnu/libstdc++-v3/include/complex:1296: error:
> invalid initialization of reference of type 'long double&' from expression
> of type 'long int'
> /tmp/gcc/i686-pc-linux-gnu/libstdc++-v3/include/complex: In member
> function `long double& std::complex<long double>::imag()':
> /tmp/gcc/i686-pc-linux-gnu/libstdc++-v3/include/complex:1304: error:
> invalid initialization of reference of type 'long double&' from expression
> of type 'long int'

Same on sparc-sun-solaris2.8.

> This doesn't make sense because the member function in question reads:
>
>   inline long double&
>   complex<long double>::real()
>   { return __real__ _M_value; }                   // line 1296
>
> And _M_value does have type __complex__ long double.  Should I start a
> binary search, or is this known to be some kind of recent breakage?

Could be Mark's latest patch to the parser.

-- 
Eric Botcazou