fuzzer: use the cmp values

andrewrk · andrewrk · commit 688c2df6464b · 2024-07-25T18:52:21.000-07:00
seems to provide better scoring
diff --git a/lib/fuzzer.zig b/lib/fuzzer.zig
@@ -94,9 +94,7 @@ export fn __sanitizer_cov_trace_pc_indir(callee: usize) void {
 }
 
 fn handleCmp(pc: usize, arg1: u64, arg2: u64) void {
-    _ = arg1;
-    _ = arg2;
-    fuzzer.visitPc(pc);
+    fuzzer.visitPc(pc ^ arg1 ^ arg2);
     //std.log.debug("0x{x}: comparison of {d} and {d}", .{ pc, arg1, arg2 });
 }
 

Original file line number	Diff line number	Diff line change
`@@ -94,9 +94,7 @@ export fn __sanitizer_cov_trace_pc_indir(callee: usize) void {`
`94`	`94`	`}`
`95`	`95`
`96`	`96`	`fn handleCmp(pc: usize, arg1: u64, arg2: u64) void {`
`97`		`- _ = arg1;`
`98`		`- _ = arg2;`
`99`		`- fuzzer.visitPc(pc);`
	`97`	`+ fuzzer.visitPc(pc ^ arg1 ^ arg2);`
`100`	`98`	`//std.log.debug("0x{x}: comparison of {d} and {d}", .{ pc, arg1, arg2 });`
`101`	`99`	`}`
`102`	`100`