Patch 8.2.4716
Problem:    Memory allocation failure not tested when defining a function.
Solution:   Add a test. (Yegappan Lakshmanan, closes #10127)
Files:      src/alloc.c, src/alloc.h, src/proto/alloc.pro, src/userfunc.c,
            src/testdir/test_user_func.vim, src/testdir/test_vim9_func.vim


*** ../vim-8.2.4715/src/alloc.c 2022-04-03 21:57:22.513883898 +0100
--- src/alloc.c 2022-04-09 10:59:49.596563459 +0100
***************
*** 719,724 ****
--- 719,738 ----
      return OK;
  }
  
+ /*
+  * Same as ga_grow() but uses an allocation id for testing.
+  */
+     int
+ ga_grow_id(garray_T *gap, int n, alloc_id_T id UNUSED)
+ {
+ #ifdef FEAT_EVAL
+     if (alloc_fail_id == id && alloc_does_fail(sizeof(list_T)))
+       return FAIL;
+ #endif
+ 
+     return ga_grow(gap, n);
+ }
+ 
      int
  ga_grow_inner(garray_T *gap, int n)
  {
*** ../vim-8.2.4715/src/alloc.h 2022-04-03 11:22:33.524172298 +0100
--- src/alloc.h 2022-04-09 10:59:49.596563459 +0100
***************
*** 44,48 ****
--- 44,49 ----
      aid_newwin_wvars,
      aid_newtabpage_tvars,
      aid_blob_alloc,
+     aid_get_func,
      aid_last
  } alloc_id_T;
*** ../vim-8.2.4715/src/proto/alloc.pro 2022-01-08 15:39:35.410385289 +0000
--- src/proto/alloc.pro 2022-04-09 10:59:49.596563459 +0100
***************
*** 19,24 ****
--- 19,25 ----
  void ga_init(garray_T *gap);
  void ga_init2(garray_T *gap, size_t itemsize, int growsize);
  int ga_grow(garray_T *gap, int n);
+ int ga_grow_id(garray_T *gap, int n, alloc_id_T id UNUSED);
  int ga_grow_inner(garray_T *gap, int n);
  char_u *ga_concat_strings(garray_T *gap, char *sep);
  int ga_copy_string(garray_T *gap, char_u *p);
*** ../vim-8.2.4715/src/userfunc.c      2022-04-04 14:58:02.166539812 +0100
--- src/userfunc.c      2022-04-09 10:59:49.596563459 +0100
***************
*** 1092,1098 ****
        }
  
        // Add the line to the function.
!       if (ga_grow(newlines, 1 + sourcing_lnum_off) == FAIL)
            goto theend;
  
        if (heredoc_concat_len > 0)
--- 1092,1098 ----
        }
  
        // Add the line to the function.
!       if (ga_grow_id(newlines, 1 + sourcing_lnum_off, aid_get_func) == FAIL)
            goto theend;
  
        if (heredoc_concat_len > 0)
*** ../vim-8.2.4715/src/testdir/test_user_func.vim      2021-12-26 
20:20:29.093631230 +0000
--- src/testdir/test_user_func.vim      2022-04-09 10:59:49.596563459 +0100
***************
*** 499,502 ****
--- 499,532 ----
    bwipe!
  endfunc
  
+ " Test for memory allocation failure when defining a new function
+ func Test_funcdef_alloc_failure()
+   new
+   let lines =<< trim END
+     func Xtestfunc()
+       return 321
+     endfunc
+   END
+   call setline(1, lines)
+   call test_alloc_fail(GetAllocId('get_func'), 0, 0)
+   call assert_fails('source', 'E342:')
+   call assert_false(exists('*Xtestfunc'))
+   call assert_fails('delfunc Xtestfunc', 'E117:')
+   %d _
+   let lines =<< trim END
+     def g:Xvim9func(): number
+       return 456
+     enddef
+   END
+   call setline(1, lines)
+   call test_alloc_fail(GetAllocId('get_func'), 0, 0)
+   call assert_fails('source', 'E342:')
+   call assert_false(exists('*Xvim9func'))
+   "call test_alloc_fail(GetAllocId('get_func'), 0, 0)
+   "call assert_fails('source', 'E342:')
+   "call assert_false(exists('*Xtestfunc'))
+   "call assert_fails('delfunc Xtestfunc', 'E117:')
+   bw!
+ endfunc
+ 
  " vim: shiftwidth=2 sts=2 expandtab
*** ../vim-8.2.4715/src/testdir/test_vim9_func.vim      2022-03-23 
11:29:08.560730204 +0000
--- src/testdir/test_vim9_func.vim      2022-04-09 10:59:49.596563459 +0100
***************
*** 4071,4076 ****
--- 4071,4092 ----
    v9.CheckScriptFailure(lines, 'E476:')
  enddef
  
+ " Test for memory allocation failure when defining a new lambda
+ func Test_lambda_allocation_failure()
+   new
+   let lines =<< trim END
+     vim9script
+     g:Xlambda = (x): number => {
+         return x + 1
+       }
+   END
+   call setline(1, lines)
+   call test_alloc_fail(GetAllocId('get_func'), 0, 0)
+   call assert_fails('source', 'E342:')
+   call assert_false(exists('g:Xlambda'))
+   bw!
+ endfunc
+ 
  " The following messes up syntax highlight, keep near the end.
  if has('python3')
    def Test_python3_command()
*** ../vim-8.2.4715/src/version.c       2022-04-08 19:55:36.216168883 +0100
--- src/version.c       2022-04-09 11:01:27.984931411 +0100
***************
*** 748,749 ****
--- 748,751 ----
  {   /* Add new patch number below this line */
+ /**/
+     4716,
  /**/

-- 
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