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Prevent dereference near-null pointer in formUpdateBuffer

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Bug-Debian: https://github.com/tats/w3m/issues/35
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Tatsuya Kinoshita
2016-11-07 19:21:22 +09:00
parent af592aa5f1
commit e2c7ecec6f
1 changed files with 2 additions and 1 deletions
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3
form.c
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@@ -442,7 +442,8 @@ formUpdateBuffer(Anchor *a, Buffer *buf, FormItemList *form)
switch (form->type) { switch (form->type) {
case FORM_INPUT_CHECKBOX: case FORM_INPUT_CHECKBOX:
case FORM_INPUT_RADIO: case FORM_INPUT_RADIO:
if (spos >= buf->currentLine->len || spos < 0) if (buf->currentLine == NULL ||
spos >= buf->currentLine->len || spos < 0)
break; break;
if (form->checked) if (form->checked)
buf->currentLine->lineBuf[spos] = '*'; buf->currentLine->lineBuf[spos] = '*';