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(scm_nice): Correction to error detection. Reported by

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Matthias Koeppe.
This commit is contained in:
Kevin Ryde 2004-09-07 00:08:42 +00:00
parent 711cd59302
commit eaaf29a278
1 changed files with 5 additions and 1 deletions
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6
libguile/posix.c
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@ -1366,7 +1366,11 @@ SCM_DEFINE (scm_nice, "nice", 1, 0, 0,
#define FUNC_NAME s_scm_nice
{
SCM_VALIDATE_INUM (1,incr);
if (nice(SCM_INUM(incr)) != 0)
/* nice() returns "prio-NZERO" on success or -1 on error, but -1 can arise
from "prio-NZERO", so an error must be detected from errno changed */
errno = 0;
nice(SCM_INUM(incr));
if (errno != 0)
SCM_SYSERROR;
return SCM_UNSPECIFIED;
}