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go version
$ go version go version go1.17.8 linux/amd64
Yes.
go env
$ go env GO111MODULE="off" GOARCH="amd64" GOBIN="" GOCACHE="/root/.cache/go-build" GOENV="/root/.config/go/env" GOEXE="" GOEXPERIMENT="" GOFLAGS="" GOHOSTARCH="amd64" GOHOSTOS="linux" GOINSECURE="" GOMODCACHE="/home/zgy/gopath/pkg/mod" GONOPROXY="" GONOSUMDB="" GOOS="linux" GOPATH="/home/zgy/gopath" GOPRIVATE="" GOPROXY="" GOROOT="/root/go" GOSUMDB="off" GOTMPDIR="" GOTOOLDIR="/root/go/pkg/tool/linux_amd64" GOVCS="" GOVERSION="go1.17.8" GCCGO="gccgo" AR="ar" CC="gcc" CXX="g++" CGO_ENABLED="1" GOMOD="" CGO_CFLAGS="-g -O2" CGO_CPPFLAGS="" CGO_CXXFLAGS="-g -O2" CGO_FFLAGS="-g -O2" CGO_LDFLAGS="-g -O2" PKG_CONFIG="pkg-config" GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build585319194=/tmp/go-build -gno-record-gcc-switches"
package main // To make sure there are pointers defined by function defptrto, // define a chan variable. var c chan string func main() { c <- "foo" }
go build , then use readelf -wi main | grep "Unknown AT value: 2900: 0" to print the dwarf types info.
go build
readelf -wi main | grep "Unknown AT value: 2900: 0"
<40146> Unknown AT value: 2900: 0 <40409> Unknown AT value: 2900: 0 <48414> Unknown AT value: 2900: 0 <49178> Unknown AT value: 2900: 0 <50a31> Unknown AT value: 2900: 0 <50a4e> Unknown AT value: 2900: 0 <50a6c> Unknown AT value: 2900: 0 <50a8d> Unknown AT value: 2900: 0 <50aad> Unknown AT value: 2900: 0 <50acc> Unknown AT value: 2900: 0 <50af1> Unknown AT value: 2900: 0 <50b14> Unknown AT value: 2900: 0 <50b43> Unknown AT value: 2900: 0 <50ba9> Unknown AT value: 2900: 0 <50bcf> Unknown AT value: 2900: 0 <50c7a> Unknown AT value: 2900: 0 <50c96> Unknown AT value: 2900: 0 <50cc2> Unknown AT value: 2900: 0 <50cf1> Unknown AT value: 2900: 0 <50d57> Unknown AT value: 2900: 0 <50d7d> Unknown AT value: 2900: 0 <50e28> Unknown AT value: 2900: 0 <50e46> Unknown AT value: 2900: 0 <50e6a> Unknown AT value: 2900: 0 <50e93> Unknown AT value: 2900: 0 <50ef4> Unknown AT value: 2900: 0 <50f13> Unknown AT value: 2900: 0 <50fb7> Unknown AT value: 2900: 0 <50fe0> Unknown AT value: 2900: 0 <51007> Unknown AT value: 2900: 0 <5103e> Unknown AT value: 2900: 0 <510ad> Unknown AT value: 2900: 0 <510da> Unknown AT value: 2900: 0 <5118c> Unknown AT value: 2900: 0 <511a9> Unknown AT value: 2900: 0 <511d8> Unknown AT value: 2900: 0 <5120b> Unknown AT value: 2900: 0 <51275> Unknown AT value: 2900: 0 <5129e> Unknown AT value: 2900: 0 <5134c> Unknown AT value: 2900: 0 <51372> Unknown AT value: 2900: 0 <5139e> Unknown AT value: 2900: 0 <513d7> Unknown AT value: 2900: 0 <51447> Unknown AT value: 2900: 0 <51477> Unknown AT value: 2900: 0 <5152c> Unknown AT value: 2900: 0 <51543> Unknown AT value: 2900: 0 <51612> Unknown AT value: 2900: 0 <51647> Unknown AT value: 2900: 0 <5165e> Unknown AT value: 2900: 0 <5171e> Unknown AT value: 2900: 0 <51734> Unknown AT value: 2900: 0 <51802> Unknown AT value: 2900: 0 <51836> Unknown AT value: 2900: 0 <5184c> Unknown AT value: 2900: 0 <5190b> Unknown AT value: 2900: 0 <51924> Unknown AT value: 2900: 0 <519f5> Unknown AT value: 2900: 0 <51a2c> Unknown AT value: 2900: 0 <51a45> Unknown AT value: 2900: 0 <51b07> Unknown AT value: 2900: 0 <51b23> Unknown AT value: 2900: 0 <51bf4> Unknown AT value: 2900: 0 <51c10> Unknown AT value: 2900: 0 <51c4a> Unknown AT value: 2900: 0 <51c66> Unknown AT value: 2900: 0 <51d2b> Unknown AT value: 2900: 0
The attr 2900 is DW_AT_go_kind, it should not be 0 in any types.
DW_AT_go_kind
the attr DW_AT_go_kind of some types is 0.
The dwarf syms defined by src/cmd/link/internal/ld/dwarf.go^(*dwctxt).defptrto missed attr DW_AT_go_kind.
The text was updated successfully, but these errors were encountered:
Change https://go.dev/cl/402056 mentions this issue: cmd/link: fix the missing go_kind attr for pointer types defined by defptrto
cmd/link: fix the missing go_kind attr for pointer types defined by defptrto
Sorry, something went wrong.
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What version of Go are you using (
go version
)?Does this issue reproduce with the latest release?
Yes.
What operating system and processor architecture are you using (
go env
)?go env
OutputWhat did you do?
go build
, then usereadelf -wi main | grep "Unknown AT value: 2900: 0"
to print the dwarf types info.Output
What did you expect to see?
The attr 2900 is
DW_AT_go_kind
, it should not be 0 in any types.What did you see instead?
the attr DW_AT_go_kind of some types is 0.
The dwarf syms defined by src/cmd/link/internal/ld/dwarf.go^(*dwctxt).defptrto missed attr DW_AT_go_kind.
The text was updated successfully, but these errors were encountered: