On Wed, 09 Jan 2019 22:42:43 +0200, Andreas Tille wrote: > The values of the structure are set in line 350[3] and are OK there.
What looks suspicious to me is that an unsigned long long value is assigned to struct members of type size_t. In the previous upstream release that worked, the return value of ffparse_ulong was used which was unsigned long. I doubt this is the culprit but may be something worth looking at. > I admit I fail to see why the code works under stretch with gcc 6.3 > but fails with gcc 8.2. If the code works with an old compiler but fails with a modern one, in 99.99% of the cases it's a bug in the code. These bugs are revealed due to new and more aggressive optimization techniques/algorithms that assume undefined behavior. IOW, the code was/is buggy by definition but you got away with it somehow. The remaining 0.01% is due to compiler bugs but I bet that's not the case here.
