From: Roland Shoemaker <roland@golang.org>
Date: Thu, 13 May 2021 01:25:20 +0000 (-0700)
Subject: [dev.fuzz] internal/fuzz: include coverage in logged stats
X-Git-Tag: go1.18beta1~1282^2~59
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=54f067812dd870c305daabd22ca190b0f48e672e;p=gostls13.git

[dev.fuzz] internal/fuzz: include coverage in logged stats

Change-Id: I51ec70b69e802fd0d962ba9544e96e29b1627fef
Reviewed-on: https://go-review.googlesource.com/c/go/+/319590
Trust: Roland Shoemaker <roland@golang.org>
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Roland Shoemaker <roland@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
---

diff --git a/src/internal/fuzz/fuzz.go b/src/internal/fuzz/fuzz.go
index c46220e3ec..b4145f58dc 100644
--- a/src/internal/fuzz/fuzz.go
+++ b/src/internal/fuzz/fuzz.go
@@ -465,14 +465,18 @@ func (c *coordinator) updateStats(result fuzzResult) {
 }
 
 func (c *coordinator) logStats() {
-	// TODO(jayconrod,katiehockman): consider printing the amount of coverage
-	// that has been reached so far (perhaps a percentage of edges?)
 	elapsed := time.Since(c.startTime)
 	if c.coverageOnlyRun() {
 		fmt.Fprintf(c.opts.Log, "gathering baseline coverage, elapsed: %.1fs, workers: %d, left: %d\n", elapsed.Seconds(), c.opts.Parallel, c.covOnlyInputs)
 	} else {
 		rate := float64(c.count) / elapsed.Seconds()
-		fmt.Fprintf(c.opts.Log, "fuzzing, elapsed: %.1fs, execs: %d (%.0f/sec), workers: %d, interesting: %d\n", elapsed.Seconds(), c.count, rate, c.opts.Parallel, c.interestingCount)
+		edges, hits := len(c.coverageData), 0
+		for _, c := range c.coverageData {
+			if c > 0 {
+				hits++
+			}
+		}
+		fmt.Fprintf(c.opts.Log, "fuzzing, elapsed: %.1fs, execs: %d (%.0f/sec), workers: %d, interesting: %d, coverage: %d/%d\n", elapsed.Seconds(), c.count, rate, c.opts.Parallel, c.interestingCount, hits, edges)
 	}
 }