[assert-instr] compare only the instruction prefix

Author: gnzlbg

assert-instr/src/lib.rs

@@ -243,8 +243,10 @@ pub fn assert(fnptr: usize, expected: &str) {
     // function, returning if we do indeed find it.
     for instr in function.instrs.iter() {
         if let Some(part) = instr.parts.get(0) {
-            if part == expected {
-                return
+            if let Some(part) = part.get(0..expected.len()) {
+                if part == expected {
+                    return
+                }
             }
         }
     }