[libcxxabi] replace bzero with memset

[jroelofs]

Summary

For support of newlib as the c library.

[joerg]

Please split the changes into two separate patches. The memset part is fine for commit. The ARM changes are not (yet).

[kledzik]

src/Unwind/Registers.hpp

1549

Why add the parameter name? Not having the name suppresses "unused variable" messages.

[jroelofs]

Ok, I'll split out the memset bit from the arm stuff (and hold off on that part for now).

[jroelofs]

Removed the arm bits for now.

[nlewycky]

LGTM please commit.

[jroelofs]

Committed r206427

src/Unwind/Registers.hpp

 
 #include <stdint.h>
 #include <strings.h>
+#include <string.h>
 
 #include "libunwind.h"
 #include "config.h"

 }
 
 inline Registers_x86::Registers_x86() {
-  bzero(&_registers, sizeof(_registers));
+  memset(&_registers, 0, sizeof(_registers));
 }
 
 inline bool Registers_x86::validRegister(int regNum) const {

 }
 
 inline Registers_x86_64::Registers_x86_64() {
-  bzero(&_registers, sizeof(_registers));
+  memset(&_registers, 0, sizeof(_registers));
 }
 
 inline bool Registers_x86_64::validRegister(int regNum) const {

 }
 
 inline Registers_ppc::Registers_ppc() {
-  bzero(&_registers, sizeof(_registers));
-  bzero(&_floatRegisters, sizeof(_floatRegisters));
-  bzero(&_vectorRegisters, sizeof(_vectorRegisters));
+  memset(&_registers, 0, sizeof(_registers));
+  memset(&_floatRegisters, 0, sizeof(_floatRegisters));
+  memset(&_vectorRegisters, 0, sizeof(_vectorRegisters));
 }
 
 inline bool Registers_ppc::validRegister(int regNum) const {

 }
 
 inline Registers_arm64::Registers_arm64() {
-  bzero(&_registers, sizeof(_registers));
-  bzero(&_vectorHalfRegisters, sizeof(_vectorHalfRegisters));
+  memset(&_registers, 0, sizeof(_registers));
+  memset(&_vectorHalfRegisters, 0, sizeof(_vectorHalfRegisters));
 }
 
 inline bool Registers_arm64::validRegister(int regNum) const {

   };
 
   GPRs    _registers;
 };
 
 inline Registers_arm::Registers_arm(const void *registers) {
   static_assert(sizeof(Registers_arm) < sizeof(unw_context_t),
                     "arm registers do not fit into unw_context_t");
   memcpy(&_registers, registers, sizeof(_registers));
 }
 
 inline Registers_arm::Registers_arm() {
-  bzero(&_registers, sizeof(_registers));
+  memset(&_registers, 0, sizeof(_registers));
 }
 
 inline bool Registers_arm::validRegister(int regNum) const {