add proper fuxed-based locking for stdio

[musl] / src / stdio / fgetc.c

diff --git a/src/stdio/fgetc.c b/src/stdio/fgetc.c
index da63868..4d8aca3 100644 (file)
--- a/src/stdio/fgetc.c
+++ b/src/stdio/fgetc.c
@@ -3,9 +3,10 @@
 int fgetc(FILE *f)
 {
        int c;
-       FLOCK(f);
+       if (f->lock < 0 || !__lockfile(f))
+               return getc_unlocked(f);
        c = getc_unlocked(f);
-       FUNLOCK(f);
+       __unlockfile(f);
        return c;
 }