ash: restrict valid job ids

Although job control is disabled in busybox-w32 getjob() is still
compiled in because it's used by waitcmd().  Job ids of the form
'%string' or '%?string' don't work, though, because the command
isn't stored in the job structure.  Disable the code to handle
them.

Job ids '%%', '%+', '%-' and '%num' are still allowed and some of
them are (successfully) used in the ash tests.

Saves 144 bytes.

1 files changed, 8 insertions, 0 deletions

diff --git a/shell/ash.c b/shell/ash.c
index 279cc8ed4..ff2a54fbe 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -4411,12 +4411,16 @@ static struct job *
 getjob(const char *name, int getctl)
 {
         struct job *jp;
+#if !ENABLE_PLATFORM_MINGW32
         struct job *found;
+#endif
         const char *err_msg = "%s: no such job";
         unsigned num;
         int c;
         const char *p;
+#if !ENABLE_PLATFORM_MINGW32
         char *(*match)(const char *, const char *);
+#endif
 
         jp = curjob;
         p = name;
@@ -4457,6 +4461,7 @@ getjob(const char *name, int getctl)
                 }
         }
 
+#if !ENABLE_PLATFORM_MINGW32
         match = prefix;
         if (*p == '?') {
                 match = strstr;
@@ -4476,6 +4481,9 @@ getjob(const char *name, int getctl)
         if (!found)
                 goto err;
         jp = found;
+#else
+        goto err;
+#endif
 
  gotit:
 #if JOBS