fix major scanf breakage with unbuffered streams, fmemopen, etc.

[musl] / src / internal / shgetc.c

diff --git a/src/internal/shgetc.c b/src/internal/shgetc.c
index 96f72b6..e878b00 100644 (file)
--- a/src/internal/shgetc.c
+++ b/src/internal/shgetc.c
@@ -22,5 +22,6 @@ int __shgetc(FILE *f)
        else
                f->shend = f->rend;
        if (f->rend) f->shcnt += f->rend - f->rpos + 1;
+       if (f->rpos[-1] != c) f->rpos[-1] = c;
        return c;
 }