diff options
Diffstat (limited to 'stdlib/strtod_l.c')
| -rw-r--r-- | stdlib/strtod_l.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/stdlib/strtod_l.c b/stdlib/strtod_l.c index 6707e482a4..3c449c7d54 100644 --- a/stdlib/strtod_l.c +++ b/stdlib/strtod_l.c @@ -243,9 +243,14 @@ round_and_return (mp_limb_t *retval, intmax_t exponent, int negative, more_bits |= ((round_limb & ((((mp_limb_t) 1) << round_bit) - 1)) != 0); - (void) __mpn_rshift (retval, &retval[shift / BITS_PER_MP_LIMB], - RETURN_LIMB_SIZE - (shift / BITS_PER_MP_LIMB), - shift % BITS_PER_MP_LIMB); + /* __mpn_rshift requires 0 < shift < BITS_PER_MP_LIMB. */ + if ((shift % BITS_PER_MP_LIMB) != 0) + (void) __mpn_rshift (retval, &retval[shift / BITS_PER_MP_LIMB], + RETURN_LIMB_SIZE - (shift / BITS_PER_MP_LIMB), + shift % BITS_PER_MP_LIMB); + else + for (i = 0; i < RETURN_LIMB_SIZE - (shift / BITS_PER_MP_LIMB); i++) + retval[i] = retval[i + (shift / BITS_PER_MP_LIMB)]; MPN_ZERO (&retval[RETURN_LIMB_SIZE - (shift / BITS_PER_MP_LIMB)], shift / BITS_PER_MP_LIMB); } |