0x0D = 13 is SIGPIPE 0x8D = 141 is 13 + 128 sh likes to use $? > 128 for "killed by signal $?-128", whereas wait() stores them independently. system() returns the same value as wait(); system(false) evaluates to 256, since the return value (parameter to exit() or "return" from main()) is the high 8 bits of a word; so this is 1<<8. The low 7 bits are signal; bit 8 of the low byte is "core was dumped".
I don't know if both cases are necessary, but I suspect the intent is to handle the direct pipe(2) case as well as the pipe with shell case. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
