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Patch for PR 10728

The attached stuff is a patch for PR 10728: http://sourceware.org/bugzilla/show_bug.cgi?id=10728 "infinite loop evaluating pointer difference w/o complete debug info"

The bug was in valarith.c : value_ptrdiff--if the type structs showed size == 0, things came unstuck. This patch fixes that by issuing a warning and assuming size = 1.

The patch includes testcase source files and and an expects file.

The gdb.sum diff between the unpatched and patched make check is also attached.

Chris Moller,
Red Hat

Attachment: pr10728.patch
Description: Text document

Attachment: pr10728-check.diff
Description: Text document

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