X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fstdio%2Fputc.h;h=2014c4ec4af9c68c283d5e8cb7b2a094eab436fa;hb=6aeb9c6703670649ee09b3c8575fb428168bb75c;hp=a37937e8715d932bad73067673fc7d791093941f;hpb=ab5e1e340890b95e61d7161d7178c6a26247ad61;p=musl

diff --git a/src/stdio/putc.h b/src/stdio/putc.h
index a37937e8..2014c4ec 100644
--- a/src/stdio/putc.h
+++ b/src/stdio/putc.h
@@ -4,9 +4,9 @@
 #ifdef __GNUC__
 __attribute__((__noinline__))
 #endif
-static int locking_putc(int c, FILE *f, int tid)
+static int locking_putc(int c, FILE *f)
 {
-	if (a_cas(&f->lock, 0, tid)) __lockfile(f);
+	if (a_cas(&f->lock, 0, MAYBE_WAITERS-1)) __lockfile(f);
 	c = putc_unlocked(c, f);
 	if (a_swap(&f->lock, 0) & MAYBE_WAITERS)
 		__wake(&f->lock, 1, 1);
@@ -15,8 +15,8 @@ static int locking_putc(int c, FILE *f, int tid)
 
 static inline int do_putc(int c, FILE *f)
 {
-	int tid, l = f->lock;
-	if (l < 0 || (l & ~MAYBE_WAITERS) == (tid=__pthread_self()->tid))
+	int l = f->lock;
+	if (l < 0 || l && (l & ~MAYBE_WAITERS) == __pthread_self()->tid)
 		return putc_unlocked(c, f);
-	return locking_putc(c, f, tid);
+	return locking_putc(c, f);
 }