[newlib-cygwin] strace: Fix "over-optimization" flaw in strace.
Corinna Vinschen
corinna@sourceware.org
Wed Apr 19 18:47:00 GMT 2017
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=b43e28aef0764be86bed5f48c734361957f2cbb1
commit b43e28aef0764be86bed5f48c734361957f2cbb1
Author: Daniel Santos <daniel.santos@pobox.com>
Date: Wed Apr 19 11:06:02 2017 -0500
strace: Fix "over-optimization" flaw in strace.
Recent versions of gcc are optimizing away the TLS buffer allocated in
main, so we need to tell gcc that it's really used. RtlSecureZeroMemory
accomplishes this while also inlining the memset.
Signed-off-by: Daniel Santos <daniel.santos@pobox.com>
Diff:
---
winsup/utils/strace.cc | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/winsup/utils/strace.cc b/winsup/utils/strace.cc
index beab67b..ae62cdc 100644
--- a/winsup/utils/strace.cc
+++ b/winsup/utils/strace.cc
@@ -1191,7 +1191,7 @@ main (int argc, char **argv)
registry setting to 0x100000 (TOP_DOWN). */
char buf[CYGTLS_PADSIZE];
- memset (buf, 0, sizeof (buf));
+ RtlSecureZeroMemory (buf, sizeof (buf));
exit (main2 (argc, argv));
}
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