Merge pull request #25703 from zeertzjq/vim-9.0.2044

vim-patch:9.0.{2044,2045}

src/nvim/eval/userfunc.c

@@ -3296,8 +3296,23 @@ static void handle_defer_one(funccall_T *funccal)
     char *name = dr->dr_name;
     dr->dr_name = NULL;
 
+    // If the deferred function is called after an exception, then only the
+    // first statement in the function will be executed.  Save and restore
+    // the try/catch/throw exception state.
+    const int save_trylevel = trylevel;
+    const bool save_did_throw = did_throw;
+    const bool save_need_rethrow = need_rethrow;
+
+    trylevel = 0;
+    did_throw = false;
+    need_rethrow = false;
+
     call_func(name, -1, &rettv, dr->dr_argcount, dr->dr_argvars, &funcexe);
 
+    trylevel = save_trylevel;
+    did_throw = save_did_throw;
+    need_rethrow = save_need_rethrow;
+
     tv_clear(&rettv);
     xfree(name);
     for (int i = dr->dr_argcount - 1; i >= 0; i--) {

test/old/testdir/runtest.vim

@@ -231,6 +231,8 @@ func RunTheTest(test)
     endtry
   endif
 
+  let skipped = v:false
+
   au VimLeavePre * call EarlyExit(g:testfunc)
   if a:test =~ 'Test_nocatch_'
     " Function handles errors itself.  This avoids skipping commands after the
@@ -240,6 +242,7 @@ func RunTheTest(test)
     if g:skipped_reason != ''
       call add(s:messages, '    Skipped')
       call add(s:skipped, 'SKIPPED ' . a:test . ': ' . g:skipped_reason)
+      let skipped = v:true
     endif
   else
     try
@@ -247,6 +250,7 @@ func RunTheTest(test)
     catch /^\cskipped/
       call add(s:messages, '    Skipped')
       call add(s:skipped, 'SKIPPED ' . a:test . ': ' . substitute(v:exception, '^\S*\s\+', '',  ''))
+      let skipped = v:true
     catch
       call add(v:errors, 'Caught exception in ' . a:test . ': ' . v:exception . ' @ ' . v:throwpoint)
     endtry
@@ -342,6 +346,7 @@ func RunTheTest(test)
     endif
   endwhile
 
+  if !skipped
     " Check if the test has left any swap files behind.  Delete them before
     " running tests again, they might interfere.
     let swapfiles = s:GetSwapFileList()
@@ -351,6 +356,7 @@ func RunTheTest(test)
         call delete(name)
       endfor
     endif
+  endif
 endfunc
 
 function Delete_Xtest_Files()

test/old/testdir/test_user_func.vim

@@ -793,5 +793,31 @@ func Test_defer_wrong_arguments()
   call v9.CheckScriptFailure(lines, 'E1013: Argument 1: type mismatch, expected string but got number')
 endfunc
 
+" Test for calling a deferred function after an exception
+func Test_defer_after_exception()
+  let g:callTrace = []
+  func Defer()
+    let g:callTrace += ['a']
+    let g:callTrace += ['b']
+    let g:callTrace += ['c']
+    let g:callTrace += ['d']
+  endfunc
+
+  func Foo()
+    defer Defer()
+    throw "TestException"
+  endfunc
+
+  try
+    call Foo()
+  catch /TestException/
+    let g:callTrace += ['e']
+  endtry
+  call assert_equal(['a', 'b', 'c', 'd', 'e'], g:callTrace)
+
+  delfunc Defer
+  delfunc Foo
+  unlet g:callTrace
+endfunc
 
 " vim: shiftwidth=2 sts=2 expandtab