fix(coverity): dead code and operands don't affect result #17662

* fix(coverity/349942): structurally dead code

* fix(coverity/331396): operands don't affect result

* fix(coverity/331393): operands don't affect result

* fix(coverity/331392): operands don't affect result

* fix(coverity/331384): operands don't affect result

* fix(coverity/331374): operands don't affect result

* fix(coverity/331372): operands don't affect result

* fix(coverity/331371): operands don't affect result

* fix(coverity/331364): operands don't affect result

* fix(coverity/105585): operands don't affect result

src/nvim/autocmd.c

@@ -2428,9 +2428,8 @@ char *aucmd_exec_default_desc(AucmdExecutable acc)
   default:
     return NULL;
   }
-
-  abort();
 }
+
 char *aucmd_exec_to_string(AutoCmd *ac, AucmdExecutable acc)
 {
   switch (acc.type) {

src/nvim/mark.c

@@ -630,7 +630,7 @@ static char_u *mark_line(pos_T *mp, int lead_len)
   if (mp->lnum == 0 || mp->lnum > curbuf->b_ml.ml_line_count) {
     return vim_strsave((char_u *)"-invalid-");
   }
-  assert(Columns >= 0 && (size_t)Columns <= SIZE_MAX);
+  assert(Columns >= 0);
   // Allow for up to 5 bytes per character.
   s = vim_strnsave(skipwhite(ml_get(mp->lnum)), (size_t)Columns * 5);
 

src/nvim/normal.c

@@ -3568,7 +3568,6 @@ static void nv_zet(cmdarg_T *cap)
   bool undo = false;
 
   int l_p_siso = (int)get_sidescrolloff_value(curwin);
-  assert(l_p_siso <= INT_MAX);
 
   if (ascii_isdigit(nchar)) {
     /*

src/nvim/option.c

@@ -5664,12 +5664,10 @@ void comp_col(void)
     }
   }
   assert(sc_col >= 0
-         && INT_MIN + sc_col <= Columns
-         && Columns - sc_col <= INT_MAX);
+         && INT_MIN + sc_col <= Columns);
   sc_col = Columns - sc_col;
   assert(ru_col >= 0
-         && INT_MIN + ru_col <= Columns
-         && Columns - ru_col <= INT_MAX);
+         && INT_MIN + ru_col <= Columns);
   ru_col = Columns - ru_col;
   if (sc_col <= 0) {            // screen too narrow, will become a mess
     sc_col = 1;

src/nvim/popupmnu.c

@@ -289,8 +289,7 @@ void pum_display(pumitem_T *array, int size, int selected, bool array_changed, i
       if (pum_rl) {
         pum_width = pum_col - pum_scrollbar + 1;
       } else {
-        assert(Columns - pum_col - pum_scrollbar >= INT_MIN
-               && Columns - pum_col - pum_scrollbar <= INT_MAX);
+        assert(Columns - pum_col - pum_scrollbar >= 0);
         pum_width = Columns - pum_col - pum_scrollbar;
       }
 
@@ -356,7 +355,6 @@ void pum_display(pumitem_T *array, int size, int selected, bool array_changed, i
       } else {
         pum_col = 0;
       }
-      assert(Columns - 1 >= INT_MIN);
       pum_width = Columns - 1;
     } else {
       if (max_width > p_pw) {
@@ -367,8 +365,7 @@ void pum_display(pumitem_T *array, int size, int selected, bool array_changed, i
       if (pum_rl) {
         pum_col = max_width - 1;
       } else {
-        assert(Columns - max_width >= INT_MIN
-               && Columns - max_width <= INT_MAX);
+        assert(Columns - max_width >= 0);
         pum_col = Columns - max_width;
       }
       pum_width = max_width - pum_scrollbar;

src/nvim/tui/tui.c

@@ -1475,8 +1475,8 @@ static void tui_guess_size(UI *ui)
   // 1 - look for non-default 'columns' and 'lines' options during startup
   if (data->is_starting && (Columns != DFLT_COLS || Rows != DFLT_ROWS)) {
     did_user_set_dimensions = true;
-    assert(Columns >= INT_MIN && Columns <= INT_MAX);
-    assert(Rows >= INT_MIN && Rows <= INT_MAX);
+    assert(Columns >= 0);
+    assert(Rows >= 0);
     width = Columns;
     height = Rows;
     goto end;