commit b8ca9eb5301580dcf101753451eee196edceefbd
author Rich Felker <dalias@aerifal.cx> Fri Aug 22 23:49:54 2014 -0400
committer Rich Felker <dalias@aerifal.cx> Fri Aug 22 23:49:54 2014 -0400
tree 9602bfb40fbb328360bd024d2e416824cea63337
parent a6293285e930dbdb0eff47e29b513ca22537b1a2

fix fallback checks for kernels without private futex support

for unknown syscall commands, the kernel produces ENOSYS, not EINVAL.

src/internal/pthread_impl.h

diff --git a/src/internal/pthread_impl.h b/src/internal/pthread_impl.h
index 2d090f8..4de6637 100644
--- a/src/internal/pthread_impl.h
+++ b/src/internal/pthread_impl.h
@@ -112,7 +112,7 @@
 {
 	if (priv) priv = 128;
 	if (cnt<0) cnt = INT_MAX;
-	__syscall(SYS_futex, addr, FUTEX_WAKE|priv, cnt) != -EINVAL ||
+	__syscall(SYS_futex, addr, FUTEX_WAKE|priv, cnt) != -ENOSYS ||
 	__syscall(SYS_futex, addr, FUTEX_WAKE, cnt);
 }