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internal/runtime/gc/scan: correct size class size check

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This check intends to skip size classes that are too big for scanSpan,
but it compares the size class index with a byte size. It must do the
conversion first.

For #73581.

Change-Id: I6a6a636c8d19fa3bf2a2b609870d67d33f47f66e
Reviewed-on: https://go-review.googlesource.com/c/go/+/715460
Auto-Submit: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
This commit is contained in:
Michael Pratt 2025-10-27 16:17:31 -04:00 • committed by Gopher Robot
parent 9a77aa4f08
commit ff2ebf69c4
1 changed files with 2 additions and 1 deletions
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3
src/internal/runtime/gc/scan/scan_test.go
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@ -114,7 +114,8 @@ func benchmarkScanSpanPackedAllSizeClasses(b *testing.B, nPages int) {
if sc == 0 {
continue
}
if sc >= gc.MinSizeForMallocHeader {
size := gc.SizeClassToSize[sc]
if size >= gc.MinSizeForMallocHeader {
break
}
b.Run(fmt.Sprintf("sizeclass=%d", sc), func(b *testing.B) {