fgetwc may clobber errno when the result is not WEOF

diff --git a/src/regression/fgetwc-buffering.c b/src/regression/fgetwc-buffering.c
index a73ad54..dc0a13d 100644 (file)
--- a/src/regression/fgetwc-buffering.c
+++ b/src/regression/fgetwc-buffering.c
@@ -23,11 +23,11 @@ int main()
        A(write(p[1], "\200", 1) == 1);
        close(p[1]);
 
-       errno = 0;
        wc = fgetwc(stdin);
        if (wc != 0x800)
                t_error("wanted 0x800, got 0x%x\n", (unsigned)wc);
 
+       errno = 0;
        wc = fgetwc(stdin);
        if (wc != WEOF)
                t_error("wanted WEOF, got 0x%x\n", (unsigned)wc);