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# Gas Report
## Variables do not need to be initialized with 'empty' values such as 0, false, or address(0)
Uninitialized variables by default contain a value equivalent to 0: `uint`s are initializ…
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# Lines of code
https://github.com/code-423n4/2024-05-arbitrum-foundation/blob/6f861c85b281a29f04daacfe17a2099d7dad5f8f/src/rollup/RollupCore.sol#L565-L574
# Vulnerability details
## Impact
Reorg…
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**Github username:** --
**Twitter username:** dod4ufn
**Submission hash (on-chain):** 0x28e7489aaa6f851dab0f1ef245b5887370a9d7572b54056fe109248e2e373a35
**Severity:** low
**Description:**
**Descript…
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Hey, I'm with OpenZeppelin helping build our tech teams. I would imagine you're comfortable doing what you do now considering your standing on Code4rena's leadearboard - in the spirit of being thoroug…
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## 1.An array’s length should be cached to save gas in for-loops
An array’s length should be cached to save gas in for-loops
Reading array length at each iteration of the loop takes 6 gas (3 for mlo…
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- study well consensys dafny project (auction, erc20)
- write the project in dafny
- get the invariants and properties from me to add the specs
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**Github username:** --
**Twitter username:** --
**Submission hash (on-chain):** 0xe7aedbcf4ab85e583ab1310f04140fd8111235d988251c4f47e6fbdc01c3c0f9
**Severity:** low
**Description:**
**Description**…
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**Github username:** --
**Twitter username:** --
**Submission hash (on-chain):** 0x0c1fad6f558f8f091de2c8c41d23bb771f6dd5a543760c31af2698db60add8a5
**Severity:** medium
**Description:**
**Descriptio…
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**Github username:** @0xmahdirostami
**Twitter username:** 0xmahdirostami
**Submission hash (on-chain):** 0x6527a4a1918635e5e5bc8e452b168130541067cc339a7d72bd0abeb48174c691
**Severity:** high
**Desc…
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# Gas Report
## Replace strict greater-than-zero operation (> 0) with does-not-equal-zero (!= 0) operation
When checking whether a value is equal to zero, using the construction `var != 0` is costs…