Hi, sorry for the german output, but gcc- ignores the locale settings. just realized this using gcc-4.0.0 : cc -O3 -march=i686 -mtune=i686 -pipe -maccumulate-outgoing-args -Wall -I/usr/include/slang -D_GNU_SOURCE-c -o button.o button.c button.c: In Funktion »buttonEvent«: button.c:138: Warnung: »er.result« könnte in dieser Funktion uninitialisiert v erwendet werden cc -O3 -march=i686 -mtune=i686 -pipe -maccumulate-outgoing-args -Wall -I/usr/include/slang -D_GNU_SOURCE-c -o form.o form.c form.c: In Funktion »gotoComponent«: form.c:1088: interner Compiler-Fehler: Speicherzugriffsfehler When I use -O2 this error does not pop up. Bug report required or is this already fixed?