From: Mark Geisert <mark@maxrnd.com>
To: cygwin-patches@cygwin.com
Subject: [PATCH] Cygwin: Zero out gmon header before use
Date: Wed, 23 Jun 2021 01:56:14 -0700 [thread overview]
Message-ID: <20210623085614.1697-1-mark@maxrnd.com> (raw)
Tools that process gmon.out files can be confused by gmon header fields
with garbage in them due to lack of initialization. Repair that.
---
winsup/cygwin/gmon.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/winsup/cygwin/gmon.c b/winsup/cygwin/gmon.c
index b31842cd9..8b1c449c4 100644
--- a/winsup/cygwin/gmon.c
+++ b/winsup/cygwin/gmon.c
@@ -224,6 +224,7 @@ _mcleanup(void)
write(log, dbuf, len);
#endif
hdr = (struct gmonhdr *)&gmonhdr;
+ bzero(hdr, sizeof *hdr);
hdr->lpc = p->lowpc;
hdr->hpc = p->highpc;
hdr->ncnt = p->kcountsize + sizeof(gmonhdr);
--
2.31.1
next reply other threads:[~2021-06-23 8:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-23 8:56 Mark Geisert [this message]
2021-06-26 14:28 ` Jon Turney
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