On 2018-03-05, Troy Dawson tdawson@redhat.com wrote:
Let's say that my system builds in CentOS with modified %dist and then straight ahead for testing on a RedHat machine. Is there any chance of a building error which would happen under RedHat (but not under CentOS), which would introduce some subtle bug under RedHat?
That totally depends on your code. Is it checking to see if the package is running on a real RHEL box? If it is, how is it checking?
Let's say it is (currently it is not, for shame). What I would do is to run a set of regression tests, to make sure that the software works.
OK, we are going hypothetical here: tell me if I'm saying something stupid. :) Also, not that I don't trust your answers about %dist, it's just a matter of curiosity.
Say there's a problem, maybe some obscure bug at compiler level or so. Let's say that the GCC version in RedHat fixed that bug. CentOS has not exactly the same version (and here's my little doubt: in theory it should be slightly behind, right?) In our scenario that bug is not fixed for CentOS but it is for RedHat.
I'm building under CentOS, not detecting the problem. I'm then testing under RedHat, not detecting the problem either (regression test has not a 100% coverage). The user gets to face a weird segfault.
Could something like this happen, due to a discrepancy of any kind, between the two distros?