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runtime: do not generate crash dump on Windows 7

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It appears Windows 7 ignores WER_FAULT_REPORTING_NO_UI WerSetFlags
API flag.

And now after CL 307372, runtime will display WER GUI dialogue.

We don't want to introduce random GUI dialogues during Go program
execution. So disable dump crash creation on Windows 7 altogether.

Updates #20498

Change-Id: Ie268a7d4609f8a0eba4fe9ecf250856b0a61b331
Reviewed-on: https://go-review.googlesource.com/c/go/+/360617
Trust: Alex Brainman <alex.brainman@gmail.com>
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Patrik Nyblom <pnyb@google.com>
This commit is contained in:
Alex Brainman 2021-10-31 17:58:34 +11:00
parent 2cf85b1fb8
commit 2622235a99
1 changed files with 17 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
src/runtime/signal_windows.go
View File

@ -22,8 +22,16 @@ func disableWER() {
stdcall1(_SetErrorMode, uintptr(errormode)|SEM_FAILCRITICALERRORS|SEM_NOGPFAULTERRORBOX|SEM_NOOPENFILEERRORBOX)
}
// isWin7 returns true on Windows 7. Otherwise it returns false.
//
//go:nosplit
func isWin7() bool {
var maj, min, build uint32
stdcall3(_RtlGetNtVersionNumbers, uintptr(unsafe.Pointer(&maj)), uintptr(unsafe.Pointer(&min)), uintptr(unsafe.Pointer(&build)))
return maj < 6 || (maj == 6 && min <= 1)
}
// enableWERNoUI re-enables Windows error reporting without fault reporting UI.
// It returns false on older Windows versions (XP and earlier) where WerSetFlags() is not supported.
//
// This is marked nosplit since it is used during crash.
//
@ -224,11 +232,16 @@ func lastcontinuehandler(info *exceptionrecord, r *context, gp *g) int32 {
_, _, docrash := gotraceback()
if docrash {
// Windows 7 apears to ignore WER_FAULT_REPORTING_NO_UI
// WerSetFlags API flag. So do not call enableWERNoUI
// on Windows 7.
if !isWin7() {
// trigger crash dump creation
if enableWERNoUI() {
return _EXCEPTION_CONTINUE_SEARCH
}
}
}
exit(2)
return 0 // not reached
}