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From: "jlebon at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug translator/17860] New: foreach loop fails -p4 if array slice is an expression
Date: Mon, 19 Jan 2015 16:18:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D17860

            Bug ID: 17860
           Summary: foreach loop fails -p4 if array slice is an expression
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: translator
          Assignee: systemtap at sourceware dot org
          Reporter: jlebon at redhat dot com

The following script runs successfully:

global arr

probe oneshot {
   i =3D 1
   arr[1] =3D 2
   foreach (var in arr[i] limit 1) {
      println("iterating")
   }
}

But if we change the subscript of arr to arr[i++] in the foreach statement,=
 we
get the following p4 failures:

/tmp/stappEHxIa/stap_b1cc5d80db2fc511db3feaaaf7d971a3_1314_src.c: In functi=
on
=E2=80=98probe_2463=E2=80=99:
/tmp/stappEHxIa/stap_b1cc5d80db2fc511db3feaaaf7d971a3_1314_src.c:205:6: err=
or:
=E2=80=98struct probe_2463_locals=E2=80=99 has no member named =E2=80=98__t=
mp8=E2=80=99
     l->__tmp8 =3D 0LL;
      ^
/tmp/stappEHxIa/stap_b1cc5d80db2fc511db3feaaaf7d971a3_1314_src.c:221:12: er=
ror:
=E2=80=98struct probe_2463_locals=E2=80=99 has no member named =E2=80=98__t=
mp8=E2=80=99
       if (l->__tmp8++ >=3D l->__tmp7) goto break_0;
            ^
make[1]: *** [/tmp/stappEHxIa/stap_b1cc5d80db2fc511db3feaaaf7d971a3_1314_sr=
c.o]
Error 1

--=20
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