Patch 8.2.3143
Problem:    Vim9: A lambda may be compiled with the wrong context if it is
            called from a profiled function.
Solution:   Compile the lambda with and without profiling. (closes #8543)
Files:      src/vim9compile.c, src/testdir/test_vim9_script.vim


*** ../vim-8.2.3142/src/vim9compile.c   2021-07-10 19:41:59.916341599 +0200
--- src/vim9compile.c   2021-07-11 15:25:11.103105165 +0200
***************
*** 3624,3629 ****
--- 3624,3634 ----
        ufunc->uf_ret_type = &t_unknown;
      compile_def_function(ufunc, FALSE, cctx->ctx_compile_type, cctx);
  
+     // When the outer function is compiled for profiling, the lambda may be
+     // called without profiling.  Compile it here in the right context.
+     if (cctx->ctx_compile_type == CT_PROFILE)
+       compile_def_function(ufunc, FALSE, CT_NONE, cctx);
+ 
      // evalarg.eval_tofree_cmdline may have a copy of the last line and "*arg"
      // points into it.  Point to the original line to avoid a dangling 
pointer.
      if (evalarg.eval_tofree_cmdline != NULL)
*** ../vim-8.2.3142/src/testdir/test_vim9_script.vim    2021-07-10 
19:41:59.916341599 +0200
--- src/testdir/test_vim9_script.vim    2021-07-11 15:24:33.299146464 +0200
***************
*** 4167,4172 ****
--- 4167,4185 ----
    set hlsearch&
  enddef
  
+ def ProfiledFunc()
+   var n = 3
+   echo [[1, 2], [3, 4]]->filter((_, l) => l[0] == n)
+ enddef
+ 
+ " Execute this near the end, profiling doesn't stop until Vim exists.
+ " This only tests that it works, not the profiling output.
+ def Test_xx_profile_with_lambda()
+   profile start Xprofile.log
+   profile func ProfiledFunc
+   ProfiledFunc()
+ enddef
+ 
  " Keep this last, it messes up highlighting.
  def Test_substitute_cmd()
    new
*** ../vim-8.2.3142/src/version.c       2021-07-11 14:55:45.253356763 +0200
--- src/version.c       2021-07-11 15:20:55.599356889 +0200
***************
*** 757,758 ****
--- 757,760 ----
  {   /* Add new patch number below this line */
+ /**/
+     3143,
  /**/

-- 
Two percent of zero is almost nothing.

 /// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net   \\\
///                                                                      \\\
\\\        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ ///
 \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///

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