Showcasing a bug

content/posts/a-funny-bug.md

@@ -0,0 +1,30 @@
+---
+title: "A Funny Bug"
+date: 2024-09-01T22:51:05-05:00
+draft: true
+---
+
+Well I just found a funny bug in one of my upcoming programming projects
+
+```c++
+    size_t len = (bytecode[ip++] << 24) & 0xFF;
+           len |= (bytecode[ip++] << 16) & 0xFF;
+           len |= (bytecode[ip++] << 8) & 0xFF;
+           len |= bytecode[ip++] & 0xFF;
+```
+
+when it was supposed to be
+
+```c++
+    size_t len = ((size_t)bytecode[ip++] << 24);
+           len |= ((size_t)bytecode[ip++] << 16);
+           len |= ((size_t)bytecode[ip++] << 8);
+           len |= (size_t)bytecode[ip++];
+```
+
+this caused all numbers >255 being mod by 255 and I thought my foreach (called each in my languages) implementation was broken
+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
+
+I guess, just be careful when bitshifting and don't be an idiot like me
+
+we all make mistakes.