2024-09-03 21:35:30 +00:00
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---
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title: "A Funny Bug"
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date: 2024-09-01T22:51:05-05:00
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2024-09-03 21:51:28 +00:00
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draft: false
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2024-09-03 21:35:30 +00:00
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---
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Well I just found a funny bug in one of my upcoming programming projects
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```c++
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size_t len = (bytecode[ip++] << 24) & 0xFF;
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len |= (bytecode[ip++] << 16) & 0xFF;
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len |= (bytecode[ip++] << 8) & 0xFF;
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len |= bytecode[ip++] & 0xFF;
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```
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when it was supposed to be
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```c++
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size_t len = ((size_t)bytecode[ip++] << 24);
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len |= ((size_t)bytecode[ip++] << 16);
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len |= ((size_t)bytecode[ip++] << 8);
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len |= (size_t)bytecode[ip++];
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```
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this caused all numbers >255 being mod by 255 and I thought my foreach (called each in my languages) implementation was broken
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but then I was realizing it was jumping to a number too low for some reason ~20 or something when it should of been ~276
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I guess, just be careful when bitshifting and don't be an idiot like me
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we all make mistakes.
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