http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59700
--- Comment #9 from Steve Kargl <sgk at troutmask dot apl.washington.edu> --- On Thu, Jan 09, 2014 at 08:45:19PM +0000, dominiq at lps dot ens.fr wrote: > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59700 > > --- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > Do you understand the '++' in > > 642 dtp->u.p.line_buffer[dtp->u.p.item_count++] = c; > > ? It's C post-increment operator. If you had a->b[i++] = c and i = 2, then you are setting a->b[2] = c and afterwards doing i = i + 1 = 3. PS: Yes, I noticed that the testsuite has no tests for these runtime errors.