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> $B2,It$G$9(B.
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> $B$3$N7o$K$D$$$F$G$9$,(B, $B;d$N=j(B (Debian Linux 2.2) $B$G$O2?EY;n$7$F$bMn$A(B
> $B$J$$$N$G(B (<a title="> $B$N>l9g$b$=$&$G$9(B), $B5$$K$7$F$^$;$s$G$7$?(B. $BMn$A(B
> $B$k$+$I$&$+$O(B OS $B$K0MB8$9$k$C$F;v$O$J$$$G$9$+(B?
$BMn$A$k3NN($O(BGC$B$N%3!<%I$H(BOS$B$H$NAj@-$G$:$$$V$s0c$$$&$k$H?dB,$7$F$$$^$9!#(B
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$B$/$Y$-$G$9!#$=$l$O$5$F$*$-!#(B
> $B$R$g$C$H$9$k$H4X78$"$k$+$b$7$l$^$;$s$,(B, $B0JA0$+$i5$$K$J$C$F$?;v$J$s$G(B
> $B$9$,(B, $B%7%0%J%k%O%s%I%i$rJ]B8$7$F$$$k(B prevtrap $B$O%*!<%HJQ?t$GBg>fIW$J(B
> $B$s$G$7$g$&$+(B?
> $B$I$3$+$G(B, longjmp $B$NA08e$G%*!<%HJQ?t$,J];}$5$l$k$H$O8B$i$J$$$HJ9$$$?(B
> $B5-21$,$"$k$N$G$9$,(B.
$B$=$l=q$$$?$N;d!#E:IU%W%m%0%i%`$r$4Mw2<$5$$!#$G!"$3$l$r%3%s%Q%$%k!&<B(B
$B9T$7$?7k2L$,0J2<$G$9(B ("shlicc3" $B$O!"(Bgcc-2.95 with BSD/OS shared
library linker)$B!#(B
d51139% shlicc3 -O0 -Wall test.c -o test
d51139% ./test
^CSIGNAL: 2, A: 1
d51139% shlicc3 -O3 -Wall test.c -o test
d51139% ./test
^CSIGNAL: 2, A: 0
"^C" $B$O3d$j9~$_$G$9!#8+$F$NDL$j!":GE,2=$K$h$jJQ?t(BA$B$r(Bregister$B$K3d$jEv$F(B
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$B$($l$P!D!D$H9M$($F$?$N$K!"$J$s$F$3$C$?$$!"(BWarning$B$b$G$F$3$J$$!#(B
$B$3$3$^$G9M$($F%W%m%0%i%`$rAH$`$N$O$`$:$+$7$=$&$G$9!#(B
--- $B$d$^$F(B
#include <unistd.h> #include <stdio.h> #include <signal.h> #include <setjmp.h>
jmp_buf cur_env;
void sigjmp(int signal) { longjmp(cur_env, signal); return; }
int main(int argc, char *argv[]) { int a = 0; int r;
if ((r = setjmp(cur_env))) { printf("SIGNAL: %d, A: %d\n", r, a); } else { signal(SIGINT, sigjmp); a = 1; sleep(1000); } exit(r); }
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