Yaroslav Halchenko <deb...@onerussian.com> writes: > long story short -- reason was the combination of optimization (-O1 was > enough) + -D_FORTIFY_SOURCE=2 to fall into the "undefined" darkness of C > standard(s) in s*printf() functions (man 3 sprintf, search for undefined > or NOTES).
So basically a variation of the old problem of calling memcpy when one meant to use memmove. I'm actually surprised that type of call to sprintf ever worked reliably with optimization, even without _FORTIFY_SOURCE. But, like memcpy vs. memmove, it's the sort of thing that's horribly difficult to debug. -- Russ Allbery (r...@debian.org) <http://www.eyrie.org/~eagle/> -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/87bo3np87z....@windlord.stanford.edu
