Remove register keyword from public header files

The following code

  void f(void)
  {
    register int i;
  }

gives a warning with GCC and -std=c++17

  test.cc: In function ‘void f()’:
  test.cc:3:15: warning: ISO C++1z does not allow ‘register’ storage class
  specifier [-Wregister]
    register int i;
		       ^

and clang with -std=c++14

  test.cc:3:3: warning: 'register' storage class specifier is deprecated
  and incompatible with C++1z [-Wdeprecated-register]
    register int i;
    ^~~~~~~~~
  1 warning generated.

Remove the use of the register keyword at least in the public header
files for C++ compatibility.

Close #3397.

1 files changed, 2 insertions, 2 deletions

diff --git a/cpukit/score/cpu/powerpc/include/rtems/score/cpu.h b/cpukit/score/cpu/powerpc/include/rtems/score/cpu.h
index 02560695bd..31e74aba95 100644
--- a/cpukit/score/cpu/powerpc/include/rtems/score/cpu.h
+++ b/cpukit/score/cpu/powerpc/include/rtems/score/cpu.h
@@ -661,7 +661,7 @@ RTEMS_INLINE_ROUTINE bool _CPU_ISR_Is_enabled( uint32_t level )
 
 static inline uint32_t   _CPU_ISR_Get_level( void )
 {
-  register unsigned int msr;
+  uint32_t msr;
   _CPU_MSR_GET(msr);
   if (msr & MSR_EE) return 0;
   else	return 1;
@@ -669,7 +669,7 @@ static inline uint32_t   _CPU_ISR_Get_level( void )
 
 static inline void _CPU_ISR_Set_level( uint32_t   level )
 {
-  register unsigned int msr;
+  uint32_t msr;
   _CPU_MSR_GET(msr);
   if (!(level & CPU_MODES_INTERRUPT_MASK)) {
     msr |= ppc_interrupt_get_disable_mask();