[Bug compile/23586] New: Compile C++: printing functions broken

[keiths at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=23586

            Bug ID: 23586
           Summary: Compile C++: printing functions broken
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: compile
          Assignee: unassigned at sourceware dot org
          Reporter: keiths at redhat dot com
  Target Milestone: ---

compile-cplus-print.exp tries to do:

(gdb) compile print main
warning: function has unknown return type; assuming int
gdb command line: In function 'void _gdb_expr(__gdb_regs*, void*)':
gdb command line:5:30: warning: invalid application of 'sizeof' to a function
ty
pe [-Wpointer-arith]
warning: function has unknown return type; assuming int
gdb command line: In function 'void _gdb_expr(__gdb_regs*, void*)':
gdb command line:5:30: warning: invalid application of 'sizeof' to a function
ty
pe [-Wpointer-arith]
gdb command line:5:31: error: invalid conversion from 'int (*)()' to 'const
void
*' [-fpermissive]
In file included from
/home/keiths/work/gcc/branches/gcc-7/built/include/c++/7.2
.1/cstring:42:0,
                 from /tmp/gdbobj-C3uaZo/out5.c:11:
/usr/include/string.h:43:14: note:   initializing argument 2 of 'void*
memcpy(vo
id*, const void*, size_t)'
 extern void *memcpy (void *__restrict __dest, const void *__restrict __src,
              ^~~~~~
Compilation failed.

Tweaking of the code generator (cplus_add_input::add_input) is necessary.

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