[Bug exp/19535] New: Print thread named field fails if compiled with g++ -m32 on x86

["richard_sharman at mitel dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=19535

            Bug ID: 19535
           Summary: Print thread named field fails if compiled with g++
                    -m32 on x86
           Product: gdb
           Version: 7.10
            Status: NEW
          Severity: normal
          Priority: P2
         Component: exp
          Assignee: unassigned at sourceware dot org
          Reporter: richard_sharman at mitel dot com
  Target Milestone: ---

Created attachment 8935
  --> https://sourceware.org/bugzilla/attachment.cgi?id=8935&action=edit
c/c++ program to demonstrate the problem

GDB cannot print a struct with a field called "thread" if the program is
compiled with g++ (not gcc) and with the -m32 option on a x86 system.

This is demonstrated by file f.cc.  If compiled with gcc with or without -m32
gdb can print x.thread,  but if compiled with g++ -m32 it gets the error "A
syntax error in expression, near `'."

To demonstrate this, source the file Run.sh which shows result of all 4
compilations and the result of gdb executing "print x.thread".  For the first 3
cases it prints correctly, "(gdb) $2 = 2" is output.  For the 4th case we get
"(gdb) A syntax error in expression, near `'."

This happens with gcc 4.8 and gcc 5.3,  and gdb versions 7.6.1, 7.8 and 7.10.  
With Hat Enterprise Linux (7.2-64.el6_5.2) there is one extra line of
information printed:

Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.149.el6.i686

Attached files:  f.cc Commands.gdb Run.sh

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