[sysprof/wip/chergert/sysprof-3] libsysprof-capture: improve zero'ing when reading back
- From: Christian Hergert <chergert src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [sysprof/wip/chergert/sysprof-3] libsysprof-capture: improve zero'ing when reading back
- Date: Thu, 23 May 2019 06:29:31 +0000 (UTC)
commit 22f7acf84fba57de64235129e7a4046a34166917
Author: Christian Hergert <chergert redhat com>
Date: Wed May 22 23:29:08 2019 -0700
libsysprof-capture: improve zero'ing when reading back
src/libsysprof-capture/sysprof-capture-reader.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/src/libsysprof-capture/sysprof-capture-reader.c b/src/libsysprof-capture/sysprof-capture-reader.c
index b42a553..4c063c6 100644
--- a/src/libsysprof-capture/sysprof-capture-reader.c
+++ b/src/libsysprof-capture/sysprof-capture-reader.c
@@ -523,7 +523,8 @@ sysprof_capture_reader_read_mark (SysprofCaptureReader *self)
/* Ensure trailing \0 in name and message */
mark->name[sizeof mark->name - 1] = 0;
- self->buf[self->pos + mark->frame.len - 1] = 0;
+ if (mark->frame.len > sizeof *mark)
+ ((gchar *)mark)[mark->frame.len - 1] = 0;
/* Maybe update end-time */
if G_UNLIKELY ((mark->frame.time + mark->duration) > self->end_time)
@@ -566,7 +567,8 @@ sysprof_capture_reader_read_metadata (SysprofCaptureReader *self)
/* Ensure trailing \0 in .id and .metadata */
metadata->id[sizeof metadata->id - 1] = 0;
- self->buf[self->pos + metadata->frame.len - 1] = 0;
+ if (metadata->frame.len > sizeof *metadata)
+ ((gchar *)metadata)[metadata->frame.len - 1] = 0;
return metadata;
}
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