shithub: riscv

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ref: fd4e8eef0b14200982c7ef08dcb978445f32c866
parent: dc8da7c232006a6894fd8742ee38c7bdfbc6d702
author: Ori Bernstein <[email protected]>
date: Mon Apr 12 05:22:48 EDT 2021

Mail: correctly track the number of messages (thanks igor)

We forgot to update the message count when deleting
messages in mail, meaning we could access trailing
messages that had been freed.

--- a/sys/src/cmd/upas/Mail/mbox.c

+++ b/sys/src/cmd/upas/Mail/mbox.c

@@ -715,6 +715,7 @@

 		else

 			mbox.mesg[j++] = m;

 	}

+	mbox.nmesg = j;

 	close(fd);

 	fprint(mbox.ctl, "clean\n");