go/src/runtime/runtime-gdb_test.go, branch fix-runtime-test-GOMAXPROCS

runtime: run TestSignalDuringExec in its own process group

2025-07-09T20:34:08Z

TestSignalDuringExec sends a SIGWINCH to the whole process group. However, it may execute concurrently with other copies of the runtime tests, especially through `go tool dist`, and gdb version <12.1 has a bug in non-interactive mode where recieving a SIGWINCH causes a crash. This change modifies SignalDuringExec in the testprog to first fork itself into a new process group. To avoid issues with Ctrl+C and the new process group hanging, the new process blocks on a pipe that is passed down to it. This pipe is automatically closed when its parent exits, which should ensure that the subprocess also exits. Fixes #58932. Change-Id: I3906afa28cf8b15d22ae612d071bce7f30fc3e6c Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest-noswissmap,gotip-linux-amd64-longtest-aliastypeparams,gotip-linux-amd64-longtest,gotip-linux-386-longtest Reviewed-on: https://go-review.googlesource.com/c/go/+/686875 LUCI-TryBot-Result: Go LUCI Reviewed-by: Michael Pratt

runtime: update skips for TestGdbBacktrace

2025-06-30T16:00:54Z

We encountered a new type of "no such process" error on loong64, it's like this "Couldn't get NT_PRSTATUS registers: No such process.", I checked the source code of gdb, NT_PRSTATUS is not fixed, it may be another name, so I use regular expression here to match possible cases. Updates #50838 Fixes #74389 Change-Id: I3e3f7455b2dc6b8aa10c084f24f6a2a114790855 Reviewed-on: https://go-review.googlesource.com/c/go/+/684195 LUCI-TryBot-Result: Go LUCI Auto-Submit: Dmitri Shuralyov Reviewed-by: David Chase Reviewed-by: abner chenc Reviewed-by: Dmitri Shuralyov

runtime: increase GDB version testing requirement to 10 from 7.7

2025-03-12T03:07:53Z

Bump the required version of GDB up to 10 from 7.7 in the runtime GDB tests, so as to ensure that we have something that can handle DWARF 5 when running tests. In theory there is some DWARF 5 support on the version 9 release branch, but we get "Dwarf Error: DW_FORM_addrx" errors for some archs on builders where GDB 9.2 is installed. Updates #26379. Change-Id: I1b7b45f8e4dd1fafccf22f2dda0124458ecf7cba Reviewed-on: https://go-review.googlesource.com/c/go/+/656836 Auto-Submit: Ian Lance Taylor Reviewed-by: David Chase LUCI-TryBot-Result: Go LUCI Reviewed-by: Ian Lance Taylor

internal/runtime/maps: small maps point directly to a group

2024-10-28T20:35:25Z

If the map contains 8 or fewer entries, it is wasteful to have a directory that points to a table that points to a group. Add a special case that replaces the directory with a direct pointer to a group. We could theoretically do similar for single table maps (no directory, just point directly to a table), but that is left for later. For #54766. Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest-swissmap Change-Id: I6fc04dfc11c31dadfe5b5d6481b4c4abd43d48ed Reviewed-on: https://go-review.googlesource.com/c/go/+/611188 Reviewed-by: Keith Randall LUCI-TryBot-Result: Go LUCI Auto-Submit: Michael Pratt Reviewed-by: Keith Randall

runtime: add the checkPtraceScope to skip certain tests

2024-10-23T17:24:33Z

When the kernel parameter ptrace_scope is set to 2 or 3, certain test cases in runtime-gdb_test.go will fail. We should skip these tests. Fixes #69932 Change-Id: I685d1217f1521d7f8801680cf6b71d8e7a265188 GitHub-Last-Rev: 063759e04cfc5ea750ed1d381d8586134488a96b GitHub-Pull-Request: golang/go#69933 Reviewed-on: https://go-review.googlesource.com/c/go/+/620857 Auto-Submit: Michael Knyszek LUCI-TryBot-Result: Go LUCI Reviewed-by: Dmitri Shuralyov Reviewed-by: Michael Knyszek

cmd/link,runtime: DWARF/gdb support for swiss maps

2024-10-21T21:59:06Z

For #54766. Cq-Include-Trybots: luci.golang.try:gotip-linux-ppc64_power10,gotip-linux-amd64-longtest-swissmap Change-Id: I6695c0b143560d974b710e1d78e7a7d09278f7cc Reviewed-on: https://go-review.googlesource.com/c/go/+/620215 Reviewed-by: Keith Randall Reviewed-by: Keith Randall Auto-Submit: Michael Pratt LUCI-TryBot-Result: Go LUCI

all: wire up swisstable maps

2024-10-14T19:58:47Z

Use the new SwissTable-based map in internal/runtime/maps as the basis for the runtime map when GOEXPERIMENT=swissmap. Integration is complete enough to pass all.bash. Notable missing features: * Race integration / concurrent write detection * Stack-allocated maps * Specialized "fast" map variants * Indirect key / elem For #54766. Cq-Include-Trybots: luci.golang.try:gotip-linux-ppc64_power10,gotip-linux-amd64-longtest-swissmap Change-Id: Ie97b656b6d8e05c0403311ae08fef9f51756a639 Reviewed-on: https://go-review.googlesource.com/c/go/+/594596 Reviewed-by: Keith Randall Reviewed-by: Keith Randall Reviewed-by: Michael Knyszek LUCI-TryBot-Result: Go LUCI

runtime: fix TestGdbAutotmpTypes on gdb version 15

2024-09-27T00:25:54Z

On Arch Linux with gdb version 15.1, the test for TestGdbAutotmpTypes print the following output, ---- ~/src/go/src/runtime $ go test -run=TestGdbAutotmpTypes -v === RUN TestGdbAutotmpTypes === PAUSE TestGdbAutotmpTypes === CONT TestGdbAutotmpTypes runtime-gdb_test.go:78: gdb version 15.1 runtime-gdb_test.go:570: gdb output: Loading Go Runtime support. Target 'exec' cannot support this command. Breakpoint 1 at 0x46e416: file /tmp/TestGdbAutotmpTypes750485513/001/main.go, line 8. This GDB supports auto-downloading debuginfo from the following URLs: Enable debuginfod for this session? (y or [n]) [answered N; input not from terminal] Debuginfod has been disabled. To make this setting permanent, add 'set debuginfod enabled off' to .gdbinit. [New LWP 355373] [New LWP 355374] [New LWP 355375] [New LWP 355376] Thread 1 "a.exe" hit Breakpoint 1, main.main () at /tmp/TestGdbAutotmpTypes750485513/001/main.go:8 8 func main() { 9 var iface interface{} = map[string]astruct{} All types matching regular expression "astruct": File runtime: []main.astruct bucket hash main.astruct typedef hash * map[string]main.astruct; typedef noalg.[8]main.astruct noalg.[8]main.astruct; noalg.map.bucket[string]main.astruct runtime-gdb_test.go:587: could not find []main.astruct; in 'info typrs astruct' output !!! FAIL exit status 1 FAIL runtime 0.273s $ ---- In the back trace for "File runtime", each output lines does not end with ";" anymore, while in test we check the string with it. While at it, print the expected string with "%q" instead of "%s" for better error message. Fixes #67089 Change-Id: If6019ee68c0d8e495c920f98568741462c7d0fd0 Reviewed-on: https://go-review.googlesource.com/c/go/+/598135 Reviewed-by: David Chase Reviewed-by: Meng Zhuo LUCI-TryBot-Result: Go LUCI Reviewed-by: Michael Pratt

all: split old and swiss map abi and compiler integration

2024-08-02T16:41:53Z

The two map implementations are still identical, but now the compiler targets the appropriate ABI depending on GOEXPERIMENT. For #54766. Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-linux-amd64-longtest-swissmap Change-Id: I8438f64f044ba9de30ddbf2b8ceb9b4edd2d5614 Reviewed-on: https://go-review.googlesource.com/c/go/+/580779 Reviewed-by: Michael Knyszek Reviewed-by: Keith Randall LUCI-TryBot-Result: Go LUCI Auto-Submit: Michael Pratt

cmd: remove support for GOROOT_FINAL

2024-02-21T22:16:54Z

Fixes #62047 Change-Id: If7811c1eb9073fb09b7006076998f8b2e1810bfb Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-windows-amd64-longtest Reviewed-on: https://go-review.googlesource.com/c/go/+/539975 Auto-Submit: Dmitri Shuralyov LUCI-TryBot-Result: Go LUCI Reviewed-by: Bryan Mills Reviewed-by: Dmitri Shuralyov