Exit values should be distinguishable from signals (and even from signals+core dumps). Either use the C macros, or assume bits 15-8 are the exit return code, bit 7 is the core dump, and bits 6-0 are the signal number (with 127 being shell exec failure). It's the same as in Perl unless Chicken does something weird with the return from system; granted I haven't looked at the code. Hopefully Chicken's (system) returns the value of system(), not errno. system() never sets errno to my knowledge.
On 3/14/07, Kon Lovett <[EMAIL PROTECTED]> wrote:
IMHO this means the return value is almost useless w/o some hoops; i.e. if 'errno' == the return value the return value is error value, but differentiating an exit-status from a signal-code is probably impossible.
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