Alexei Zakharov alexeiz
alexeiz
/ borrow.cpp
Created
February 22, 2023 05:42
— forked from foonathan/borrow.cpp
Quick'n'dirty implementation of Rust's borrow checker for a C++Now Lightning Talk - not supposed to be used
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| #include <iostream> | |
| #include "borrow_checker.hpp" | |
| int main() | |
| { | |
| auto i = 42; | |
| // borrow `i` under name `ref` | |
| borrow_var(ref, i) |
alexeiz
/ spectre.c
Created
January 5, 2018 06:52
— forked from ErikAugust/spectre.c
Spectre example code
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| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <stdint.h> | |
| #ifdef _MSC_VER | |
| #include <intrin.h> /* for rdtscp and clflush */ | |
| #pragma optimize("gt",on) | |
| #else | |
| #include <x86intrin.h> /* for rdtscp and clflush */ | |
| #endif |
alexeiz
/ output when compiled using g++ and ran like . slash a.out
Created
January 4, 2018 18:23
— forked from mkagenius/output when compiled using g++ and ran like . slash a.out
Spectre.pdf illustrated c++ code verbatim
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| root@ubuntu:~# ./a.out | |
| Reading 40 bytes: | |
| Reading at malicious_x = 0xffffffffffdfeba8... Unclear: 0x54='T' score=980 (second best: 0x02 score=706) | |
| Reading at malicious_x = 0xffffffffffdfeba9... Unclear: 0x68='h' score=929 (second best: 0x02 score=709) | |
| Reading at malicious_x = 0xffffffffffdfebaa... Unclear: 0x65='e' score=973 (second best: 0x02 score=786) | |
| Reading at malicious_x = 0xffffffffffdfebab... Unclear: 0x20=' ' score=928 (second best: 0x02 score=784) | |
| Reading at malicious_x = 0xffffffffffdfebac... Unclear: 0x4D='M' score=746 (second best: 0x02 score=730) | |
| Reading at malicious_x = 0xffffffffffdfebad... Unclear: 0x61='a' score=978 (second best: 0x02 score=749) | |
| Reading at malicious_x = 0xffffffffffdfebae... Success: 0x67='g' score=39 (second best: 0x02 score=17) | |
| Reading at malicious_x = 0xffffffffffdfebaf... Unclear: 0x69='i' score=972 (second best: 0x02 score=748) |
alexeiz
/ current_utc_time.cpp
Last active
October 7, 2015 14:58
— forked from jbenet/current_utc_time.c
workaround for clock_gettime in os x (mach)
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| #include <time.h> | |
| #include <sys/time.h> | |
| #include <iostream> | |
| #include <ostream> | |
| // POSIX Mach | |
| // clock_gettime clock_get_time | |
| // CLOCK_REALTIME CALENDAR_CLOCK | |
| // CLOCK_MONOTONIC REALTIME_CLOCK |