https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84215
--- Comment #9 from H.J. Lu <hjl.tools at gmail dot com> ---
On i686 with many cores, r257758 gave:
...
goroutine 24690 [GC worker (idle)]:
runtime.mcall
/export/gnu/import/git/sources/gcc/libgo/runtime/proc.c:342
runtime.gopark
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/proc.go:321
runtime.gcBgMarkWorker
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/mgc.go:1776
runtime.kickoff
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/proc.go:1161
created by runtime.gcBgMarkStartWorkers
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/mgc.go:1722
+92
goroutine 23558 [running]:
goroutine running on other thread; stack unavailable
created by testing.T.Run
/export/gnu/import/git/sources/gcc/libgo/go/testing/testing.go:824 +740
goroutine 24113 [chan send]:
runtime.mcall
/export/gnu/import/git/sources/gcc/libgo/runtime/proc.c:342
runtime.gopark
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/proc.go:321
runtime.goparkunlock
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/proc.go:327
runtime.chansend
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/chan.go:249
runtime.chansend1
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/chan.go:135
testing.tRunner..func1
/export/gnu/import/git/sources/gcc/libgo/go/testing/testing.go:728
runtime.deferreturn
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/panic.go:205
testing.tRunner
/export/gnu/import/git/sources/gcc/libgo/go/testing/testing.go:783
runtime.kickoff
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/proc.go:1161
created by testing.T.Run
/export/gnu/import/git/sources/gcc/libgo/go/testing/testing.go:824 +740
eax 0x0
ebx 0x2
ecx 0xb93e1afc
edx 0x0
edi 0x0
esi 0x8
ebp 0xb93e1afc
esp 0xb93e1ae0
eip 0xf7f42db9
eflags 0x282
cs 0x23
fs 0x0
gs 0x63
FAIL: runtime
goroutine 4122 [IO wait]:
internal_poll.runtime_pollWait
/export/gnu/import/git/sources/gcc/libgo/go/runtime/netpoll.go:176
internal_poll.pollDesc.wait
/export/gnu/import/git/sources/gcc/libgo/go/internal/poll/fd_poll_runtime.go:85
internal_poll.pollDesc.waitRead
/export/gnu/import/git/sources/gcc/libgo/go/internal/poll/fd_poll_runtime.go:90
internal_poll.FD.Accept
/export/gnu/import/git/sources/gcc/libgo/go/internal/poll/fd_unix.go:372
net.netFD.accept
/export/gnu/import/git/sources/gcc/libgo/go/net/fd_unix.go:238
net.TCPListener.accept
/export/gnu/import/git/sources/gcc/libgo/go/net/tcpsock_posix.go:136
net.TCPListener.Accept
/export/gnu/import/git/sources/gcc/libgo/go/net/tcpsock.go:259
net_http.Server.Serve
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest249618/test/server.go:2770
httptest.func1
/export/gnu/import/git/sources/gcc/libgo/go/net/http/httptest/server.go:280
created by net_http_httptest.Server.goServe
/export/gnu/import/git/sources/gcc/libgo/go/net/http/httptest/server.go:278
+198
goroutine 4535 [semacquire]:
syscall.Accept4
/export/gnu/import/git/sources/gcc/libgo/go/syscall/libcall_linux.go:176
poll.accept
/export/gnu/import/git/sources/gcc/libgo/go/internal/poll/sock_cloexec.go:17
internal_poll.FD.Accept
/export/gnu/import/git/sources/gcc/libgo/go/internal/poll/fd_unix.go:365
net.netFD.accept
/export/gnu/import/git/sources/gcc/libgo/go/net/fd_unix.go:238
net.TCPListener.accept
/export/gnu/import/git/sources/gcc/libgo/go/net/tcpsock_posix.go:136
net.TCPListener.Accept
/export/gnu/import/git/sources/gcc/libgo/go/net/tcpsock.go:259
crypto_tls.listener.Accept
/export/gnu/import/git/sources/gcc/libgo/go/crypto/tls/tls.go:52
net_http.Server.Serve
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest249618/test/server.go:2770
httptest.func1
/export/gnu/import/git/sources/gcc/libgo/go/net/http/httptest/server.go:280
created by net_http_httptest.Server.goServe
/export/gnu/import/git/sources/gcc/libgo/go/net/http/httptest/server.go:278
+198
eax 0x0
ebx 0x2
ecx 0xce0f1fbc
edx 0x0
edi 0x0
esi 0x8
ebp 0xce0f1fbc
esp 0xce0f1fa0
eip 0xf7f3edb9
eflags 0x286
cs 0x23
fs 0x0
gs 0x63
FAIL: net/http
/tmp/cc2A9bsi.s: Assembler messages:
/tmp/cc2A9bsi.s:7954: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:7965: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:7976: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:7977: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:7978: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:7979: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:7993: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8004: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8015: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8016: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8017: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8018: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8032: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8043: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8054: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8055: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8056: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8057: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8071: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8082: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8093: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8094: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8095: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8096: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8110: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8121: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8132: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8133: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8134: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8135: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8149: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8160: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8171: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8172: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8173: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8174: Error: leb128 operand is an undefined symbol: .LVU443
FAIL: golang_org/x/crypto/chacha20poly1305/internal/chacha20
FAIL: golang_org/x/crypto/curve25519
FAIL: golang_org/x/net/lex/httplex
checksyms: found unexpected symbol "__libc_start_main@@GLIBC_2.0"
FAIL: checksyms
spawn [open ...]^M
fatal error: unexpected signal during runtime execution
[signal SIGSEGV: segmentation violation code=2 addr=4140130304 pc=4152026464]
runtime stack:
doscanstack1
/export/gnu/import/git/sources/gcc/libgo/runtime/stack.c:77
runtime_mstart
/export/gnu/import/git/sources/gcc/libgo/runtime/proc.c:527
goroutine 33 [GC worker (idle)]:
created by runtime.gcStart
/export/gnu/import/git/sources/gcc/libgo/go/runtime/mgc.go:1299 +412
goroutine 1 [GC assist marking (scan)]:
panic
/export/gnu/import/git/sources/gcc/libgo/go/runtime/panic.go:462
runtime_panicstring
/export/gnu/import/git/sources/gcc/libgo/runtime/panic.c:38
main.main..func1
./index0-out.go:140
main.test
./index0-out.go:112
main.main
./index0-out.go:140
FAIL: ./index0-out.go execution, -O0 -g -fno-var-tracking-assignments
