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cmd/compile: add debug log prior to export data lookup

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If there is a crash in LookupFunc (which has occurred a few times now),
this ensures that we log the offending symbol before crashing.

For #67016.

Change-Id: I0119597de2be3d1b97c41a9361273d1feb90ec11
Reviewed-on: https://go-review.googlesource.com/c/go/+/581437
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Michael Pratt 2024-04-24 11:31:19 -04:00
parent 508e761978
commit d037bba19b
1 changed files with 3 additions and 0 deletions
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3
src/cmd/compile/internal/pgoir/irgraph.go
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@ -333,6 +333,9 @@ func addIndirectEdges(g *IRGraph, namedEdgeMap pgo.NamedEdgeMap) {
// devirtualization. Instantiation of generic functions
// will likely need to be done at the devirtualization
// site, if at all.
if base.Debug.PGODebug >= 3 {
fmt.Printf("addIndirectEdges: %s attempting export data lookup\n", key.CalleeName)
}
fn, err := LookupFunc(key.CalleeName)
if err == nil {
if base.Debug.PGODebug >= 3 {