FICS主要包括9步,首先将源代码编译为LLVM bitcode方便后续的操作,然后提取每个函数的过程间DDG,接着针对DDG提取Construct,下一步对利用Bag-of-Nodes对提取的Construct进行粗粒度的嵌入进行第一步聚类,目的是对功能相似的Construct进行分组,然后使用Graph2Vec进行细粒度的嵌入,对每一个分组内部进行二次聚类,找出区别于...
Finding Bugs Using Your Own Code: Detecting Functionally-similar yet Inconsistent CodeMansour AhmadiReza Mirzazade FarkhaniRyan WilliamsLong LuUSENIX Security Symposium
但是在case里面,out的default值就是0,所以说如果单用out来判断valid,肯定是不够的。所以这里还要加上code的值来辅助判断。 答案不唯一: moduletop_module(input[7:0]code,output reg[3:0]out,output reg valid=1);//always @(*)begincase(code)8'h45:out=0;8'h16:out=1;8'h1e:out=2;8'h26:out...
In this article, we shared how we were able to use AddressSanitizer to find bugs in various open source projects. We hope this will motivate you to try out this feature on your own code base. Have you found eager iterators, shapeshifting types, or array / length constant disagreements ...
Bugs mux2 原本代码的逻辑是反的,这不是坑人吗。 module top_module ( input sel, input [7:0] a, input [7:0] b, output [7:0]out ); assign out = ({8{sel}} & a) | ({8{~sel}} ...
To summarise, you must conduct rapid attacks on the software and devices. Otherwise, even an emulator or simulator might detect the bugs that do not appear on the real device or when using the software on a real device. 2. Pay Attention to the Test Environment ...
这题有五个问题,其一valid不能直接在上面赋值1,其二是out的赋值必须要注明位数和进制数,其三是这里3的code的进制写成了d十进制应该是h十六进制,其四是这里9的code位数写成了6,其五这是组合电路要注意不能出现锁存器,所以default内必须加out的默认值(本题为0)。
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Finally, we validate the ability to diagnose existing visual models using language on the Waterbirds and CelebA datasets, we can identify bugs comprehensible to human experts, uncovering not only known bugs but also previously unknown ones. PDF Abstract ...
It's been two years since we last checked the code of the LLVM project with PVS-Studio, so let's see if PVS-Studio is still the leader among tools for detecting bugs and security weaknesses. We'll do...