From: duerst@...
Date: 2018-08-07T07:12:54+00:00
Subject: [ruby-core:88323] [Ruby trunk Bug#14971] error: implicit declaration of function ‘rb_vm_call0

Issue #14971 has been reported by duerst (Martin D��rst).

----------------------------------------
Bug #14971: error: implicit declaration of function ���rb_vm_call0
https://bugs.ruby-lang.org/issues/14971

* Author: duerst (Martin D��rst)
* Status: Open
* Priority: Normal
* Assignee: nobu (Nobuyoshi Nakada)
* Target version: 
* ruby -v: ruby 2.6.0dev (2018-08-01 trunk 64156) [x86_64-cygwin]
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN
----------------------------------------
I get the errors below when making `make up install-nodoc`.
I'm not at v64208.

```
compiling vm.c
In file included from vm_insnhelper.c:1570:0,
                 from vm.c:310:
vm_args.c: In function ���vm_to_proc���:
vm_args.c:813:17: error: implicit declaration of function ���rb_vm_call0��� [-Werror=implicit-function-declaration]
             b = rb_vm_call0(GET_EC(), proc, idTo_proc, 0, NULL, me);
                 ^~~~~~~~~~~
In file included from vm.c:310:0:
vm_insnhelper.c: In function ���vm_call_bmethod_body���:
vm_insnhelper.c:1977:11: error: implicit declaration of function ���vm_invoke_bmethod��� [-Werror=implicit-function-declaration]
     val = vm_invoke_bmethod(ec, proc, calling->recv, calling->argc, argv, calling->block_handler);
           ^~~~~~~~~~~~~~~~~
In file included from vm.c:308:0:
/cygdrive/c/Data/ruby/insns.def: In function ���vm_exec_core���:
vm_insnhelper.h:109:20: warning: passing argument 1 of ���vm_expandarray��� from incompatible pointer type [-Wincompatible-pointer-types]
 #define GET_SP()   (COLLECT_USAGE_REGISTER_HELPER(SP, GET, VM_REG_SP))
                    ^
/cygdrive/c/Data/ruby/insns.def:449:20: note: in expansion of macro ���GET_SP���
     vm_expandarray(GET_SP(), ary, num, (int)flag);
                    ^~~~~~
In file included from vm.c:310:0:
vm_insnhelper.c:1240:1: note: expected ���rb_control_frame_t * {aka struct rb_control_frame_struct *}��� but argument is of type ���VALUE * {aka long unsigned int *}���
 vm_expandarray(rb_control_frame_t *cfp, VALUE ary, rb_num_t num, int flag)
 ^~~~~~~~~~~~~~
In file included from vm.c:318:0:
vm_eval.c: At top level:
vm_eval.c:44:1: error: conflicting types for ���rb_vm_call0���
 rb_vm_call0(rb_execution_context_t *ec, VALUE recv, ID id, int argc, const VALUE *argv, const rb_callable_method_entry_t *me)
 ^~~~~~~~~~~
In file included from vm_insnhelper.c:1570:0,
                 from vm.c:310:
vm_args.c:813:17: note: previous implicit declaration of ���rb_vm_call0��� was here
             b = rb_vm_call0(GET_EC(), proc, idTo_proc, 0, NULL, me);
                 ^~~~~~~~~~~
cc1: warning: unrecognized command line option ���-Wno-cast-function-type���
cc1: warning: unrecognized command line option ���-Wno-self-assign���
cc1: warning: unrecognized command line option ���-Wno-constant-logical-operand���
cc1: warning: unrecognized command line option ���-Wno-parentheses-equality���
cc1: some warnings being treated as errors
make[1]: *** [Makefile:403: vm.o] Error 1
make[1]: Leaving directory '/cygdrive/c/Data/ruby'
make: [uncommon.mk:1147: up] Error 2 (ignored)
```



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