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Handle Panel_getSelected() returning NULL

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Found by compiling with LTO:

    ColumnsPanel.c: In function ‘ColumnsPanel_eventHandler’:
    ColumnsPanel.c:46:59: error: potential null pointer dereference [-Werror=null-dereference]
       46 |             ((ListItem*)Panel_getSelected(super))->moving = this->moving;
          |                                                           ^
    AvailableColumnsPanel.c: In function ‘AvailableColumnsPanel_eventHandler’:
    AvailableColumnsPanel.c:31:8: error: potential null pointer dereference [-Werror=null-dereference]
       31 |    int key = ((ListItem*) Panel_getSelected(super))->key;
          |        ^
    AvailableMetersPanel.c: In function ‘AvailableMetersPanel_eventHandler’:
    AvailableMetersPanel.c:40:24: error: potential null pointer dereference [-Werror=null-dereference]
       40 |    int param = selected->key & 0xff;
          |                        ^
    linux/IOPriorityPanel.c: In function ‘IOPriorityPanel_getIOPriority’:
    linux/IOPriorityPanel.c:37:11: error: potential null pointer dereference [-Werror=null-dereference]
       37 |    return (IOPriority) ( ((ListItem*) Panel_getSelected(this))->key );
          |           ^
This commit is contained in:
Christian Göttsche
2020-10-05 18:27:55 +02:00
committed by cgzones
parent e9fa290019
commit ad3acfc847
4 changed files with 14 additions and 4 deletions
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5
AvailableMetersPanel.c
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@ -36,7 +36,10 @@ static HandlerResult AvailableMetersPanel_eventHandler(Panel* super, int ch) {
AvailableMetersPanel* this = (AvailableMetersPanel*) super;
Header* header = this->header;
ListItem* selected = (ListItem*) Panel_getSelected(super);
const ListItem* selected = (ListItem*) Panel_getSelected(super);
if (!selected)
return IGNORED;
int param = selected->key & 0xff;
int type = selected->key >> 16;
HandlerResult result = IGNORED;