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Invalid memory access when using boost lexical_cast to convert u256 to string

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**Describe the bug** When trying to convert a u256 to a string, the program may access invalid memory. **Call Stack** ``` AddressSanitizer:DEADLYSIGNAL ================================================================= ==127029==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000020...

Some transactions cannot be processed due to deadlock

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**Describe the bug** I started a group of 10 nodes, and constaintly send transactions based on PerformanceTransferDMC contract with the following command: ``` java -cp 'conf/:lib/*:apps/*' org.fisco.bcos.sdk.demo.perf.PerformanceTransferDMC group 32 500000...

I was following the demo video on youtube: https://www.youtube.com/watch?v=Nv_Teb--1zg But when I add a room in my code and test it. The console gives no reactions when another peer joined...

# 🐛 Bug The leader times of various nodes may be unfair. ## To reproduce I started a swarm with 10 nodes, 1 of them is a malicious one. And...

# 🐛 Bug I start a swarm with 10 nodes and I set 3 of the nodes as malicious ones. The malicious node can modify the values of some fields...

Is there a way to evaluate the TPS under a local swarm?

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## ❓ Questions and Help ### Please note that this issue tracker is not a help form and this issue will be closed. Please contact the development team on [Discourse](https://community.libra.org)...

# 🐛 Bug The validator node crashed due to the unreachable hash! The trace is listed below. ## To reproduce I just run diem-swarm with 10 validator nodes and start...

When I give an empty file to the program train_c, I found this issue: ``` ================================================================= ==19071==ERROR: AddressSanitizer: alloc-dealloc-mismatch (operator new [] vs operator delete) on 0x7f51e6a9b800 #0 0x7f51e5ac4b2a in...

SEGV signal occurred when running program thulac

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When I try to run thulac and thulac_test program. I found this : ``` ASAN:SIGSEGV ================================================================= ==12976==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7fbf3a4841ba bp 0x000000000000 sp 0x7ffc53739440 T0)...

When I try to run program train_c with the command line : ``` ./train_c train_file outfile ``` The address sanitizer found a heap buffer overflow issue: ``` ================================================================= ==11181==ERROR: AddressSanitizer:...