kconfig: loop boundary condition fix

[linux-2.6-microblaze.git] / scripts / kconfig / preprocess.c

diff --git a/scripts/kconfig/preprocess.c b/scripts/kconfig/preprocess.c
index 65da87f..5ca2df7 100644 (file)
--- a/scripts/kconfig/preprocess.c
+++ b/scripts/kconfig/preprocess.c
@@ -156,7 +156,7 @@ static char *do_shell(int argc, char *argv[])
                nread--;
 
        /* remove trailing new lines */
-       while (buf[nread - 1] == '\n')
+       while (nread > 0 && buf[nread - 1] == '\n')
                nread--;
 
        buf[nread] = 0;