svn commit: r288238 - head/contrib/libcxxrt
Conrad E. Meyer
cem at FreeBSD.org
Fri Sep 25 22:29:22 UTC 2015
Author: cem
Date: Fri Sep 25 22:29:21 2015
New Revision: 288238
URL: https://svnweb.freebsd.org/changeset/base/288238
Log:
MFV c3ccd112: Correct off-by-ones in free_exception of emergency buffer
Note, this has been broken since import in r227825.
PR: https://github.com/pathscale/libcxxrt/issues/29
Reviewed by: emaste (earlier version), kan (informally)
Obtained from: Anton Rang
Relnotes: yes
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D3733
Modified:
head/contrib/libcxxrt/exception.cc
Modified: head/contrib/libcxxrt/exception.cc
==============================================================================
--- head/contrib/libcxxrt/exception.cc Fri Sep 25 22:19:35 2015 (r288237)
+++ head/contrib/libcxxrt/exception.cc Fri Sep 25 22:29:21 2015 (r288238)
@@ -516,7 +516,7 @@ static void emergency_malloc_free(char *
break;
}
}
- assert(buffer > 0 &&
+ assert(buffer >= 0 &&
"Trying to free something that is not an emergency buffer!");
// emergency_malloc() is expected to return 0-initialized data. We don't
// zero the buffer when allocating it, because the static buffers will
@@ -556,7 +556,7 @@ static void free_exception(char *e)
{
// If this allocation is within the address range of the emergency buffer,
// don't call free() because it was not allocated with malloc()
- if ((e > emergency_buffer) &&
+ if ((e >= emergency_buffer) &&
(e < (emergency_buffer + sizeof(emergency_buffer))))
{
emergency_malloc_free(e);
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