https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66613
--- Comment #4 from BENAÏSSA <ka_bena at yahoo dot fr> --- Thank you for your mail. Compile Flags: -std=c99 -Warray-bounds -Wall -Wextra -Waddress -Wbad-function-cast -Wformat -Wformat-contains-nul -Wformat-extra-args -Wformat-nonliteral -Wformat-security -Wformat-zero-length -Wmissing-format-attribute -Woverlength-strings -foptional-diags -Woverlength-strings -malign-stringops-malign-stringops-lm-llquadmath I work with windowsXP on Compaq 6720S. I use gcc provided by gfortran.I hope that those informations can be useful. Thank you A.BENAISSA. Le Lundi 22 juin 2015 11h50, rguenth at gcc dot gnu.org <gcc-bugzi...@gcc.gnu.org> a écrit : https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66613 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2015-06-22 Ever confirmed|0 |1 --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- The issue could also be in gmp/mpfr/mpc or in the C library. How did you compile (with what flags) anyway?