add -gx to add stack smash code
https://github.com/D-Programming-Language/dmd/pull/1542 I haven't noticed any other compiler with this feature. What it does is upon function exit, it 'smashes' all the memory used for local variables. The idea is to flush out any dependencies on the now-out-of-scope stack frame. Throw this switch when you are experiencing bizarre crashes that come and go - it may help find the root of the problem by causing it to fail sooner and more predictably. It may also be handy if, for crypto code, you don't want to leave passwords around in memory, though I'd be more proactive about that than relying on this.
Re: add -gx to add stack smash code
On Thursday, 24 January 2013 at 05:32:55 UTC, Walter Bright wrote: https://github.com/D-Programming-Language/dmd/pull/1542 I haven't noticed any other compiler with this feature. What it Strange ... Privately, I have thought of this for years. Kudos !
Re: add -gx to add stack smash code
On 2013-01-24 06:32, Walter Bright wrote: https://github.com/D-Programming-Language/dmd/pull/1542 I haven't noticed any other compiler with this feature. What it does is upon function exit, it 'smashes' all the memory used for local variables. The idea is to flush out any dependencies on the now-out-of-scope stack frame. Throw this switch when you are experiencing bizarre crashes that come and go - it may help find the root of the problem by causing it to fail sooner and more predictably. It may also be handy if, for crypto code, you don't want to leave passwords around in memory, though I'd be more proactive about that than relying on this. You've started to use pull requests for DMD, nice. Does this take into account delegates that are closures? -- /Jacob Carlborg
