patch 8.2.4436: crash with weird 'vartabstop' value

Problem: Crash with weird 'vartabstop' value. Solution: Check for running into the end of the line.
vim · Feb 21, 2022 · 4e889f9 · 4e889f9 · k-takata · Feb 22, 2022
1 parent 7842761
commit 4e889f9
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Showing 3 changed files with 16 additions and 0 deletions.
diff --git a/src/indent.c b/src/indent.c
@@ -1338,6 +1338,8 @@ change_indent(
 		new_cursor_col += (*mb_ptr2len)(ptr + new_cursor_col);
 	    else
 		++new_cursor_col;
+	    if (ptr[new_cursor_col] == NUL)
+		break;
 	    vcol += lbr_chartabsize(ptr, ptr + new_cursor_col, (colnr_T)vcol);
 	}
 	vcol = last_vcol;

diff --git a/src/testdir/test_vartabs.vim b/src/testdir/test_vartabs.vim
@@ -442,4 +442,16 @@ func Test_shiftwidth_vartabstop()
   setlocal shiftwidth& vartabstop& tabstop&
 endfunc
 
+func Test_vartabstop_latin1()
+  let save_encoding = &encoding
+  new
+  set encoding=iso8859
+  silent norm :se 
+  set vartabstop=400
+  norm i00	
+  bwipe!
+  let &encoding = save_encoding
+endfunc
+
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/version.c b/src/version.c
@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4436,
 /**/
     4435,
 /**/