# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1627934406 -7200
# Node ID 0160aff01c323e764da722d88b2bd91e0c69a040
# Parent  e4e9d42dfd674fcfc704253149e43c63dbce75ab
patch 8.2.3278: Vim9: error when adding 1 to float

Commit: https://github.com/vim/vim/commit/7bf9a07bd7d6264f623109c2896b2a4002c86080
Author: Bram Moolenaar <Bram@vim.org>
Date:   Mon Aug 2 21:55:15 2021 +0200

    patch 8.2.3278: Vim9: error when adding 1 to float

    Problem:    Vim9: error when adding 1 to float.
    Solution:   Accept t_number_bool. (closes https://github.com/vim/vim/issues/8687)

diff --git a/src/testdir/test_vim9_assign.vim b/src/testdir/test_vim9_assign.vim
--- a/src/testdir/test_vim9_assign.vim
+++ b/src/testdir/test_vim9_assign.vim
@@ -223,6 +223,12 @@ def Test_assignment()
   g:inc_counter += 1
   assert_equal(2, g:inc_counter)
 
+  if has('float')
+    var f: float
+    f += 1
+    assert_equal(1.0, f)
+  endif
+
   $SOME_ENV_VAR ..= 'more'
   assert_equal('somemore', $SOME_ENV_VAR)
   CheckDefFailure(['$SOME_ENV_VAR += "more"'], 'E1051:')
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3278,
+/**/
     3277,
 /**/
     3276,
diff --git a/src/vim9compile.c b/src/vim9compile.c
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -7111,7 +7111,8 @@ compile_assignment(char_u *arg, exarg_T 
 		if (
 #ifdef FEAT_FLOAT
 		    // If variable is float operation with number is OK.
-		    !(expected == &t_float && stacktype == &t_number) &&
+		    !(expected == &t_float && (stacktype == &t_number
+			    || stacktype == &t_number_bool)) &&
 #endif
 		    need_type(stacktype, expected, -1, 0, cctx,
 							 FALSE, FALSE) == FAIL)