compiler: Add explicit sign to exported complex constants without imaginary component.

Fixes issue 31.

From-SVN: r219273

diff --git a/gcc/go/gofrontend/expressions.cc b/gcc/go/gofrontend/expressions.cc
index ccb472bed30d89cb7324472b7c523ac09dba6408..d386b81ce17c7eb428eb3fcd698194986ff80d1a 100644 (file)
--- a/gcc/go/gofrontend/expressions.cc
+++ b/gcc/go/gofrontend/expressions.cc
@@ -2450,7 +2450,7 @@ Complex_expression::export_complex(String_dump* exp, const mpc_t val)
   if (!mpfr_zero_p(mpc_realref(val)))
     {
       Float_expression::export_float(exp, mpc_realref(val));
-      if (mpfr_sgn(mpc_imagref(val)) > 0)
+      if (mpfr_sgn(mpc_imagref(val)) >= 0)
        exp->write_c_string("+");
     }
   Float_expression::export_float(exp, mpc_imagref(val));