From: Ian Lance Taylor <ian@gcc.gnu.org>
Date: Thu, 24 Jan 2019 05:31:14 +0000 (+0000)
Subject: runtime: install SIGURG handler on C created threads
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=52c9cfeb083c7fff0c5049c772285131175f7d0c;p=gcc.git

runtime: install SIGURG handler on C created threads

    Precise stack scan uses SIGURG to trigger a stack scan. We need
    to have Go signal handler installed for SIGURG.

    Reviewed-on: https://go-review.googlesource.com/c/159097

From-SVN: r268230
---

diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
index 95604f851dd..faab230d3ec 100644
--- a/gcc/go/gofrontend/MERGE
+++ b/gcc/go/gofrontend/MERGE
@@ -1,4 +1,4 @@
-e3271f3e09337b951822ba5c596d8cfe3b94508e
+d67c4bf0c42b79d54925ba8c5f23278ee6c3efb6
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.
diff --git a/libgo/go/runtime/signal_unix.go b/libgo/go/runtime/signal_unix.go
index 2f89c7cbf43..12e4315d7e1 100644
--- a/libgo/go/runtime/signal_unix.go
+++ b/libgo/go/runtime/signal_unix.go
@@ -142,8 +142,8 @@ func sigInstallGoHandler(sig uint32) bool {
 	}
 
 	// When built using c-archive or c-shared, only install signal
-	// handlers for synchronous signals and SIGPIPE.
-	if (isarchive || islibrary) && t.flags&_SigPanic == 0 && sig != _SIGPIPE {
+	// handlers for synchronous signals, SIGPIPE, and SIGURG.
+	if (isarchive || islibrary) && t.flags&_SigPanic == 0 && sig != _SIGPIPE && sig != _SIGURG {
 		return false
 	}