gdb, btrace: Fix clang build

Simon pointed out to me that there are some failures when building with clang,
that were caused by my commit

commit d894edfcc40e63be9b6efa0950c1752f249f16e5
Author: Felix Willgerodt <felix.willgerodt@intel.com>
Date:   Mon Feb 18 13:49:25 2019 +0100

    btrace: Introduce auxiliary instructions.

The errors are:

  CXX    btrace.o
gdb/btrace.c:1203:11: error: suggest braces around initialization of subobject [-Werror,-Wmissing-braces]
 1203 |   return {(CORE_ADDR) insn.ip, (gdb_byte) insn.size,
      |           ^~~~~~~~~~~~~~~~~~~
      |           {                  }
gdb/btrace.c:1218:21: error: suggest braces around initialization of subobject [-Werror,-Wmissing-braces]
 1218 |   btrace_insn insn {btinfo->aux_data.size () - 1, 0,
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                     {                           }
gdb/btrace.c:1323:34: error: variable 'bfun' is uninitialized when used here [-Werror,-Wuninitialized]
 1323 |             handle_pt_aux_insn (btinfo, bfun, *ptw_string, pc);
      |                                         ^~~~
gdb/btrace.c:1236:35: note: initialize the variable 'bfun' to silence this warning
 1236 |       struct btrace_function *bfun;
      |                                   ^
      |                                    = nullptr
3 errors generated.
make[1]: *** [Makefile:1961: btrace.o] Error 1

This fixes those errors and switches two casts to C++ casts while we
are at it.

Approved-By: Simon Marchi <simon.marchi@efficios.com>

0 files changed, 0 insertions, 0 deletions