Update version to 3.1.0RC2.

Need to declare unnamed parameter when argument decomposition used.

README.md

@@ -20,7 +20,7 @@ of the Ministry of Economy, Trade and Industry of Japan.
 
 ## How to get mruby
 
-The release candidate version 3.1.0 of mruby can be downloaded via the following URL: [https://github.com/mruby/mruby/archive/3.1.0-rc.zip](https://github.com/mruby/mruby/archive/3.1.0-rc.zip)
+The release candidate version 3.1.0 of mruby can be downloaded via the following URL: [https://github.com/mruby/mruby/archive/3.1.0-rc2.zip](https://github.com/mruby/mruby/archive/3.1.0-rc2.zip)
 
 The latest development version of mruby can be downloaded via the following URL: [https://github.com/mruby/mruby/zipball/master](https://github.com/mruby/mruby/zipball/master)
 

include/mruby/version.h

@@ -57,7 +57,7 @@ MRB_BEGIN_DECL
 /*
  * Patch level string. (optional)
  */
-#define MRUBY_PATCHLEVEL_STR "RC"
+#define MRUBY_PATCHLEVEL_STR "RC2"
 
 #ifndef MRUBY_PATCHLEVEL_STR
 # if MRUBY_PATCHLEVEL < 0
@@ -85,12 +85,12 @@ MRB_BEGIN_DECL
 /*
  * Release month.
  */
-#define MRUBY_RELEASE_MONTH 1
+#define MRUBY_RELEASE_MONTH 3
 
 /*
  * Release day.
  */
-#define MRUBY_RELEASE_DAY 7
+#define MRUBY_RELEASE_DAY 31
 
 /*
  * Release date as a string.

mrbgems/mruby-compiler/core/codegen.c

@@ -839,7 +839,7 @@ gen_muldiv(codegen_scope *s, uint8_t op, uint16_t dst)
     }
     else { /* OP_DIV */
       if (n0 == MRB_INT_MIN && n == -1) goto normal;
-      n = n0 / n;
+      n = mrb_div_int(s->mrb, n0, n);
     }
     s->pc = addr_pc(s, data0.addr);
     gen_int(s, dst, n);
@@ -2851,7 +2851,7 @@ codegen(codegen_scope *s, node *tree, int val)
           }
         }
         /* keyword arguments */
-        if (s2 && (s2->ainfo & 0x1) && tree->cdr->car) {
+        if (tree->cdr->car) {
           nk = gen_hash(s, tree->cdr->car->cdr, VAL, 14);
           if (nk < 0) {st++; nk = 15;}
           else st += nk*2;

mrbgems/mruby-compiler/core/parse.y

@@ -2962,6 +2962,7 @@ f_margs         : f_arg
                     }
                 | f_arg ',' tSTAR
                     {
+                      local_add_f(p, intern_op(mul));
                       $$ = list3($1, nint(-1), 0);
                     }
                 | f_arg ',' tSTAR ',' f_arg
@@ -2978,11 +2979,16 @@ f_margs         : f_arg
                     }
                 | tSTAR
                     {
+                      local_add_f(p, intern_op(mul));
                       $$ = list3(0, nint(-1), 0);
                     }
-                | tSTAR ',' f_arg
+                | tSTAR ','
                     {
-                      $$ = list3(0, nint(-1), $3);
+                      local_add_f(p, intern_op(mul));
+                    }
+                  f_arg
+                    {
+                      $$ = list3(0, nint(-1), $4);
                     }
                 ;
 
@@ -3864,6 +3870,7 @@ f_arg_item      : f_norm_arg
                     {
                       $$ = new_masgn_param(p, $3, p->locals->car);
                       local_resume(p, $<nd>2);
+                      local_add_f(p, 0);
                     }
                 ;
 
@@ -4849,7 +4856,7 @@ parse_string(parser_state *p)
             --len;
           }
         }
-        if ((len-1 == hinf->term_len) && (strncmp(s, hinf->term, len-1) == 0)) {
+        if (hinf->term_len > 0 && len-1 == hinf->term_len && strncmp(s, hinf->term, len-1) == 0) {
           heredoc_remove_indent(p, hinf);
           return tHEREDOC_END;
         }

src/vm.c

@@ -1729,6 +1729,7 @@ RETRY_TRY_BLOCK:
       }
       mrb_assert(bidx < irep->nregs);
 
+      blk = regs[bidx];
       uint8_t nk = (b >> 4) & 0x0f;
       if (nk > 0 && nk < CALL_MAXARGS) {  /* pack keyword arguments */
         uint8_t n = b & 0x0f;
@@ -1737,6 +1738,8 @@ RETRY_TRY_BLOCK:
         regs[kidx] = kdict;
         nk = 15;
         b = n | (nk<<4);
+        bidx = kidx + 1;
+        regs[bidx] = blk;
       }
 
       if (mid == 0 || !target_class) {
@@ -1761,7 +1764,6 @@ RETRY_TRY_BLOCK:
         mrb_exc_set(mrb, exc);
         goto L_RAISE;
       }
-      blk = regs[bidx];
       if (!mrb_nil_p(blk) && !mrb_proc_p(blk)) {
         blk = mrb_type_convert(mrb, blk, MRB_TT_PROC, MRB_SYM(to_proc));
         /* The stack or ci stack might have been reallocated during