8230708: Hotspot fails to build on linux-sparc with gcc-9

Backport-of: 5f29e88

Author: Richard-Rogalski

src/hotspot/cpu/sparc/nativeInst_sparc.hpp

@@ -313,7 +313,7 @@ inline NativeInstruction* nativeInstruction_at(address address) {
 // (used to manipulate inline caches, primitive & dll calls, etc.)
 inline NativeCall* nativeCall_at(address instr);
 inline NativeCall* nativeCall_overwriting_at(address instr,
-                                             address destination);
+                                             address destination = NULL);
 inline NativeCall* nativeCall_before(address return_address);
 class NativeCall: public NativeInstruction {
  public:
@@ -342,7 +342,7 @@ class NativeCall: public NativeInstruction {
 
   // Creation
   friend inline NativeCall* nativeCall_at(address instr);
-  friend NativeCall* nativeCall_overwriting_at(address instr, address destination = NULL) {
+  friend NativeCall* nativeCall_overwriting_at(address instr, address destination) {
     // insert a "blank" call:
     NativeCall* call = (NativeCall*)instr;
     call->set_long_at(0 * BytesPerInstWord, call_instruction(destination, instr));
@@ -411,7 +411,7 @@ class NativeCallReg: public NativeInstruction {
 //      == sethi %hi54(addr), O7 ;  jumpl O7, %lo10(addr), O7 ;  <delay>
 // That is, it is essentially the same as a NativeJump.
 class NativeFarCall;
-inline NativeFarCall* nativeFarCall_overwriting_at(address instr, address destination);
+inline NativeFarCall* nativeFarCall_overwriting_at(address instr, address destination = NULL);
 inline NativeFarCall* nativeFarCall_at(address instr);
 class NativeFarCall: public NativeInstruction {
  public:
@@ -450,7 +450,7 @@ class NativeFarCall: public NativeInstruction {
     return call;
   }
 
-  friend inline NativeFarCall* nativeFarCall_overwriting_at(address instr, address destination = NULL) {
+  friend inline NativeFarCall* nativeFarCall_overwriting_at(address instr, address destination) {
     Unimplemented();
     NativeFarCall* call = (NativeFarCall*)instr;
     return call;