go: cmd/link: unexpected bindingNone in '_go.buildid'

After upgrading to Go 1.15, the linker fails on some packages with unexpected bindingNone in '_go.buildid'. This only happens on Darwin but not Linux. We haven’t been able to construct the small example to reproduce the issue.

The issues seems to related to the size of the linked binary. For example, a test binary that fails to link in Go 1.15 is 330MB when it’s linked in Go 1.14.

Similar errors:

• https://forums.xamarin.com/discussion/comment/49320/#Comment_49320
• https://github.com/jmcmellen/splat/issues/3#issuecomment-454627284

What version of Go are you using (go version)?

$ go version
go version go1.15 darwin/amd64

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (go env)?

$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/zplin/Library/Caches/go-build"
GOENV="/Users/zplin/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/zplin/gocode/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/zplin/gocode"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/Cellar/go/1.15/libexec"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/Cellar/go/1.15/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
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 -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/bf/3ympgpy92txgknkb4z30dldh0000gn/T/go-build303752340=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

Building some packages with either go build or bazel build

What did you expect to see?

Build succeeds

What did you see instead?

Linker fails with the following error:

final section layout:
    __TEXT/__text addr=0x04001E00, size=0x092B5F84, fileOffset=0x00001E00, type=1
    __TEXT/__stubs addr=0x0D2B7D84, size=0x00000534, fileOffset=0x092B7D84, type=28
    __TEXT/__stub_helper addr=0x0D2B82B8, size=0x000008BC, fileOffset=0x092B82B8, type=32
    __TEXT/__rodata addr=0x0D2B8B80, size=0x02DE98D8, fileOffset=0x092B8B80, type=0
    __TEXT/__typelink addr=0x100A2460, size=0x00054884, fileOffset=0x0C0A2460, type=0
    __TEXT/__itablink addr=0x100F6CE8, size=0x0002F820, fileOffset=0x0C0F6CE8, type=0
    __TEXT/__gosymtab addr=0x10126508, size=0x00000000, fileOffset=0x0C126508, type=0
    __TEXT/__gopclntab addr=0x10126520, size=0x06EB5A95, fileOffset=0x0C126520, type=0
    __TEXT/__cstring addr=0x16FDBFC0, size=0x000074AC, fileOffset=0x12FDBFC0, type=13
    __TEXT/__const addr=0x16FE3470, size=0x000052A0, fileOffset=0x12FE3470, type=0
    __TEXT/text_env addr=0x16FE8710, size=0x00003340, fileOffset=0x12FE8710, type=0
    __TEXT/__unwind_info addr=0x16FEBA50, size=0x000015A0, fileOffset=0x12FEBA50, type=22
    __DATA/__nl_symbol_ptr addr=0x16FED000, size=0x00000008, fileOffset=0x12FED000, type=29
    __DATA/__got addr=0x16FED008, size=0x00000038, fileOffset=0x12FED008, type=29
    __DATA/__la_symbol_ptr addr=0x16FED040, size=0x000006F0, fileOffset=0x12FED040, type=27
    __DATA/__const addr=0x16FED730, size=0x000026A0, fileOffset=0x12FED730, type=0
    __DATA/__go_buildinfo addr=0x16FEFDD0, size=0x00000020, fileOffset=0x12FEFDD0, type=0
    __DATA/__noptrdata addr=0x16FEFE00, size=0x00092A60, fileOffset=0x12FEFE00, type=0
    __DATA/__data addr=0x17082860, size=0x00036068, fileOffset=0x13082860, type=0
    __DATA/__bss addr=0x170B88E0, size=0x000695F0, fileOffset=0x00000000, type=25
    __DATA/__noptrbss addr=0x17121EE0, size=0x00022080, fileOffset=0x00000000, type=25
    __DATA/__common addr=0x17143F60, size=0x00000010, fileOffset=0x00000000, type=25
ld: unexpected bindingNone in '_go.buildid' from /var/folders/6w/bx57vndx04l6w11tf912xzyc0000gn/T/go-link-018988157/go.o for architecture x86_64