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Avoid overflow error after negative shift count error.

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From-SVN: r171523
This commit is contained in:
Ian Lance Taylor 2011-03-25 19:23:10 +00:00
parent ba78087b6c
commit 7657ab90b4
1 changed files with 7 additions and 1 deletions
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8
gcc/go/gofrontend/expressions.cc
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@ -5747,7 +5747,13 @@ Binary_expression::do_check_types(Gogo*)
if (this->right_->integer_constant_value(true, val, &type))
{
if (mpz_sgn(val) < 0)
this->report_error(_("negative shift count"));
{
this->report_error(_("negative shift count"));
mpz_set_ui(val, 0);
source_location rloc = this->right_->location();
this->right_ = Expression::make_integer(&val, right_type,
rloc);
}
}
mpz_clear(val);
}