Re: About BZ#87210 [RFE] To initialize automatic stack variables

2019-03-04 Thread P J P
On Tuesday, 19 February, 2019, 3:55:35 PM IST, P J P wrote: > >Hello, > >  -> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87210 > >This RFE is about providing gcc option(s) to eliminate information leakage >issues from programs. Information leakage via uninitialised memory has been >a chronic/re

Re: GSoC Project Ideas

2019-03-04 Thread P J P
On Monday, 4 March, 2019, 4:37:07 AM IST, Patrick Palka wrote:  >I am very interested in working on GCC as part of GSoC this year. >A few years ago I was a somewhat active code contributor[1] and >unfortunately my contributing waned once I went back to school, >but I'm excited to potentially have

Re: A bug in vrp_meet?

2019-03-04 Thread Richard Biener
On Fri, Mar 1, 2019 at 10:02 PM Qing Zhao wrote: > > > On Mar 1, 2019, at 1:25 PM, Richard Biener wrote: > > On March 1, 2019 6:49:20 PM GMT+01:00, Qing Zhao wrote: > > Jeff, > > thanks a lot for the reply. > > this is really helpful. > > I double checked the dumped intermediate file for pass “d

Re: About BZ#87210 [RFE] To initialize automatic stack variables

2019-03-04 Thread Richard Biener
On Mon, Mar 4, 2019 at 11:44 AM P J P wrote: > > On Tuesday, 19 February, 2019, 3:55:35 PM IST, P J P > wrote: > > > >Hello, > > > > -> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87210 > > > >This RFE is about providing gcc option(s) to eliminate information leakage > >issues from programs. I

Re: GSoC Project Ideas

2019-03-04 Thread Richard Biener
On Mon, Mar 4, 2019 at 12:16 AM Jeff Law wrote: > > On 3/3/19 4:06 PM, Patrick Palka wrote: > > Hi everyone, > > > > I am very interested in working on GCC as part of GSoC this year. A few > > years > > ago I was a somewhat active code contributor[1] and unfortunately my > > contributing waned o

Re: GSoC Project Ideas

2019-03-04 Thread Jakub Jelinek
On Mon, Mar 04, 2019 at 01:13:29PM +0100, Richard Biener wrote: > > > * Make TREE_NO_WARNING more fine-grained > > > (inspired by comment #7 of PR74762 [3]) > > > TREE_NO_WARNING is currently used as a catch-all marker that > > > inhibits all > > > warnings related to the marked

Re: GSoC Project Ideas

2019-03-04 Thread Richard Biener
On Mon, Mar 4, 2019 at 1:23 PM Jakub Jelinek wrote: > > On Mon, Mar 04, 2019 at 01:13:29PM +0100, Richard Biener wrote: > > > > * Make TREE_NO_WARNING more fine-grained > > > > (inspired by comment #7 of PR74762 [3]) > > > > TREE_NO_WARNING is currently used as a catch-all marker that

Re: A bug in vrp_meet?

2019-03-04 Thread Qing Zhao
Richard, thanks a lot for your suggested fix. I will try it. Qing > On Mar 4, 2019, at 5:45 AM, Richard Biener wrote: > > On Fri, Mar 1, 2019 at 10:02 PM Qing Zhao wrote: >> >> >> On Mar 1, 2019, at 1:25 PM, Richard Biener >> wrote: >> >> On March 1, 2019 6:49:20 PM GMT+01:00, Qing Zhao

Re: About BZ#87210 [RFE] To initialize automatic stack variables

2019-03-04 Thread David Brown
On 19/02/2019 11:23, P J P wrote: Hello,   -> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87210 This RFE is about providing gcc option(s) to eliminate information leakage issues from programs. Information leakage via uninitialised memory has beena chronic/recurring issue across all software.

Re: A bug in vrp_meet?

2019-03-04 Thread Qing Zhao
Hi, Richard, > On Mar 4, 2019, at 5:45 AM, Richard Biener wrote: >> >> It looks like DOM fails to visit stmts generated by simplification. Can you >> open a bug report with a testcase? >> >> >> The problem is, It took me quite some time in order to come up with a small >> and independent tes