bug#21513:

2020-01-18 Thread Martin Liška
I can confirm that it never finishes on i586. I would recommend to replace DEBUG_ASSERT (num >= 0); which expands to: ((num >= 0) ? (void) 0 : __builtin_unreachable ()); into: if (num < 0) __builtin_abort (); From GCC documentation: If control flow reaches the point of the __builtin_

bug#21513: (now an infinite loop in grep/tests/triple-backref?)

2020-01-18 Thread Paul Eggert
On 1/18/20 6:44 AM, Martin Liška wrote: I can confirm that it never finishes on i586. I can't reproduce the problem, either on Ubuntu 18.04.3 x86-64 (GCC Ubuntu 7.4.0-1ubuntu1~18.04.1) or on Fedora 31 (GCC 9.2.1 20190827 x86-64 (Red Hat 9.2.1-1)). I did what should have been the equivalent of