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fix cancellation failure in single-threaded programs

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even a single-threaded program can be cancellable, e.g. if it's called
pthread_cancel(pthread_self()). the correct predicate to check is not
whether multiple threads have been invoked, but whether pthread_self
has been invoked.
This commit is contained in:
Rich Felker 2012-01-22 17:19:37 -05:00
parent 787c2648a9
commit ce7d72596c
1 changed files with 1 additions and 1 deletions
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src/thread/cancel_impl.c
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@ -17,7 +17,7 @@ long (__syscall_cp)(long nr, long u, long v, long w, long x, long y, long z)
uintptr_t old_sp, old_ip;
long r;
if (!libc.threaded || (self = __pthread_self())->canceldisable)
if (!libc.main_thread || (self = __pthread_self())->canceldisable)
return __syscall(nr, u, v, w, x, y, z);
old_sp = self->cp_sp;