commit 18ee0feb5dfbe51993dc715d24cf419ac92ebf92
author Bram Moolenaar <Bram@vim.org> Mon Sep 19 11:44:11 2022 +0100
committer Bram Moolenaar <Bram@vim.org> Mon Sep 19 11:44:11 2022 +0100
tree 0a51383e2d7be90622cae2058c864d3e4dbd71a8
parent b2f0ca820eae50994745106d824e215d87bd7926

patch 9.0.0501: warning for using uninitialized value in mouse test

Problem:    Warning for using uninitialized value in mouse test.
Solution:   Clear ScreenCols when allocating it. (Dominique Pellé)

src/screen.c

diff --git a/src/screen.c b/src/screen.c
index 27f4848..06bda0d 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -2708,7 +2708,9 @@
     if (enc_dbcs == DBCS_JPNU)
 	new_ScreenLines2 = LALLOC_MULT(schar_T, (Rows + 1) * Columns);
     new_ScreenAttrs = LALLOC_MULT(sattr_T, (Rows + 1) * Columns);
-    new_ScreenCols = LALLOC_MULT(colnr_T, (Rows + 1) * Columns);
+    // Clear ScreenCols to avoid a warning for unitialized memory in
+    // jump_to_mouse().
+    new_ScreenCols = LALLOC_CLEAR_MULT(colnr_T, (Rows + 1) * Columns);
     new_LineOffset = LALLOC_MULT(unsigned, Rows);
     new_LineWraps = LALLOC_MULT(char_u, Rows);
     new_TabPageIdxs = LALLOC_MULT(short, Columns);