patch 8.0.0568: 1gd may hang

Problem:    "1gd" may hang.
Solution:   Don't get stuck in one position. (Christian Brabandt, closes #1643)

Author: brammool

src/normal.c

@@ -4371,7 +4371,12 @@ find_decl(
 	    if ((pos = findmatchlimit(NULL, '}', FM_FORWARD,
 		     (int)(old_pos.lnum - curwin->w_cursor.lnum + 1))) != NULL
 		    && pos->lnum < old_pos.lnum)
+	    {
+		/* There can't be a useful match before the end of this block.
+		 * Skip to the end. */
+		curwin->w_cursor = *pos;
 		continue;
+	    }
 	}
 
 	if (t == FAIL)
@@ -8311,6 +8316,7 @@ nv_g_cmd(cmdarg_T *cap)
 	break;
 #endif
 
+    /* "g<": show scrollback text */
     case '<':
 	show_sb_text();
 	break;

src/testdir/test_goto.vim

@@ -288,3 +288,24 @@ func Test_cursorline_keep_col()
   set nocursorline
 endfunc
 
+func Test_gd_local_block()
+  let lines = [
+	\ '  int main()',
+	\ '{',
+	\ '  char *a = "NOT NULL";',
+	\ '  if(a)',
+	\ '  {',
+	\ '    char *b = a;',
+	\ '    printf("%s\n", b);',
+	\ '  }',
+	\ '  else',
+	\ '  {',
+	\ '    char *b = "NULL";',
+	\ '    return b;',
+	\ '  }',
+	\ '',
+	\ '  return 0;',
+	\ '}',
+  \ ]
+  call XTest_goto_decl('1gd', lines, 11, 11)
+endfunc

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    568,
 /**/
     567,
 /**/