From: "jlebon at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug translator/17860] foreach loop fails -p4 if array slice is an expression
Date: Mon, 19 Jan 2015 16:21:00 -0000 [thread overview]
Message-ID: <bug-17860-6586-MHZYsiwD4O@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-17860-6586@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=17860
--- Comment #1 from Jonathan Lebon <jlebon at redhat dot com> ---
The reason this fails is that the logic in c_tmpcounter::visit_foreach_loop()
is not exactly matched with c_unparser::visit_foreach_loop(). The order in
which tmpvars are declared is not the same as the order in which they are used
up during unparsing.
This doesn't cause an issue in the working case above since tmpcounter declares
and unparser uses 4 tmpvars in consecutive order. However, when i++ is used,
tmpcounter introduces two new vars for the post_crement, one of which it ends
up not declaring. When c_unparser then tries to use this same numbered tmpvar
we get the failures above.
Currently testing a patch for this.
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next prev parent reply other threads:[~2015-01-19 16:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-19 16:18 [Bug translator/17860] New: " jlebon at redhat dot com
2015-01-19 16:21 ` jlebon at redhat dot com [this message]
2015-01-23 14:26 ` [Bug translator/17860] " jlebon at redhat dot com
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