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fix unsigned comparison bug in posix_spawn

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read should never return anything but 0 or sizeof ec here, but if it
does, we want to treat any other return as "success". then the caller
will get back the pid and is responsible for waiting on it when it
immediately exits.
This commit is contained in:
Rich Felker
2013-02-03 17:09:47 -05:00
parent fb6b159d9e
commit 4862864fc1
1 changed files with 1 additions and 1 deletions
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src/process/posix_spawn.c
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@ -152,7 +152,7 @@ int __posix_spawnx(pid_t *restrict res, const char *restrict path,
close(args.p[1]);
if (pid > 0) {
if (read(args.p[0], &ec, sizeof ec) < sizeof ec) ec = 0;
if (read(args.p[0], &ec, sizeof ec) != sizeof ec) ec = 0;
else waitpid(pid, &(int){0}, 0);
} else {
ec = -pid;