From 568c985113b29574c4e25e1a016475668fc17c28 Mon Sep 17 00:00:00 2001 From: Richard Biener Date: Thu, 14 May 2020 08:53:03 +0200 Subject: middle-end/95118 - fix printing of denormal zero This fixes printing a REAL_CST generated from value-numbering punning some bits to a real which turns out as zero with big negative exponent. This causes the loop in real_to_decimal_for_mode to never terminate. 2020-05-14 Richard Biener PR middle-end/95118 * real.c (real_to_decimal_for_mode): Make sure we handle a zero with nonzero exponent. * gcc.dg/pr95118.c: New testcase. --- gcc/real.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'gcc/real.c') diff --git a/gcc/real.c b/gcc/real.c index 00b23ce..09ec5c0 100644 --- a/gcc/real.c +++ b/gcc/real.c @@ -1714,8 +1714,8 @@ real_to_decimal_for_mode (char *str, const REAL_VALUE_TYPE *r_orig, do_multiply (&u, &v, ten); - /* Stop if we're now >= 1. */ - if (REAL_EXP (&u) > 0) + /* Stop if we're now >= 1 or zero. */ + if (REAL_EXP (&u) > 0 || u.cl == rvc_zero) break; v = u; -- cgit v1.1