Hi Ian,
> This patch to the Go frontend checks for negative numbers with very
> small magnitudes that will round to negative zero, and forces them to
> positive zero instead. This implements the spec clarification in
> https://golang.org/cl/14727. The test is in
> https://golang.org/cl/91895. This fixes golang.org/issue/12621.
> Bootstrapped and ran Go testsuite on x86_64-pc-linux-gnu. Committed
> to mainline.
unfortunately, this broke bootstrap with mpfr 2.4.2, which is still the
minimum version documented in install.texi:
/vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/expressions.cc: In static member
function 'static bool Numeric_constant::is_float_zero(const __mpfr_struct*,
int)':
/vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/expressions.cc:16222:14: error:
'mpfr_get_flt' was not declared in this scope
return mpfr_get_flt(val, GMP_RNDN) == 0;
^~~~~~~~~~~~
/vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/expressions.cc:16222:14: note:
suggested alternative: 'mpfr_get_ld'
return mpfr_get_flt(val, GMP_RNDN) == 0;
^~~~~~~~~~~~
mpfr_get_ld
Rainer
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Rainer Orth, Center for Biotechnology, Bielefeld University
