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Call character checking function with unsigned char

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See https://wiki.sei.cmu.edu/confluence/display/c/STR37-C.+Arguments+to+character-handling+functions+must+be+representable+as+an+unsigned+char
This commit is contained in:
Christian Göttsche
2020-09-11 19:27:56 +02:00
committed by cgzones
parent 1f5bd5c4c8
commit 8a849bc85a
6 changed files with 6 additions and 6 deletions
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2
AvailableColumnsPanel.c
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@ -45,7 +45,7 @@ static HandlerResult AvailableColumnsPanel_eventHandler(Panel* super, int ch) {
}
default:
{
if (ch < 255 && isalpha(ch))
if (0 < ch && ch < 255 && isalpha((unsigned char)ch))
result = Panel_selectByTyping(super, ch);
break;
}