Remove program error footgun and cleaner developer experience (#8042)

programs/bpf/c/src/error_handling/error_handling.c

@@ -8,30 +8,33 @@
  * Custom error for when input serialization fails
  */
 
-extern uint32_t entrypoint(const uint8_t *input) {
+extern uint64_t entrypoint(const uint8_t *input) {
   SolKeyedAccount ka[4];
   SolParameters params = (SolParameters) { .ka = ka };
 
   if (!sol_deserialize(input, &params, SOL_ARRAY_SIZE(ka))) {
-    return INVALID_ARGUMENT;
+    return ERROR_INVALID_ARGUMENT;
   }
 
   switch (params.data[0]) {
     case(1):
-        sol_log("return success");
-        return SUCCESS;
+      sol_log("return success");
+      return SUCCESS;
     case(2):
-        sol_log("return a builtin");
-        return INVALID_ACCOUNT_DATA;
+      sol_log("return a builtin");
+      return ERROR_INVALID_ACCOUNT_DATA;
     case(3):
-        sol_log("return custom error");
-        return 42;
+      sol_log("return custom error 42");
+      return 42;
     case(4):
-        sol_log("return error that conflicts with success");
-        return 0x40000000;
+      sol_log("return an invalid error");
+      return ERROR_INVALID_ACCOUNT_DATA + 1;
+    case(5):
+      sol_log("return unknown builtin");
+      return TO_BUILTIN(50);
     default:
-        sol_log("Unrecognized command");
-        return INVALID_INSTRUCTION_DATA;
+      sol_log("Unrecognized command");
+      return ERROR_INVALID_INSTRUCTION_DATA;
   }
   return SUCCESS;
 }