From 9f93153431af768da33b54dd4e6b3e98d841e4b8 Mon Sep 17 00:00:00 2001
From: "lingjun.cg" <lingjun.cg@alibaba-inc.com>
Date: Thu, 31 Oct 2024 18:58:35 +0800
Subject: [PATCH] [Runtime] CRaC: fix compile error in Alpine Linux

Summary: There no __SIGRTMIN macro in Alpine Linux

Testing: All CRaC testcases.

Reviewers: Accelerator1996, denghui.ddh

Issue: https://github.com/dragonwell-project/dragonwell11/issues/867
---
 src/java.base/share/native/launcher/main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/java.base/share/native/launcher/main.c b/src/java.base/share/native/launcher/main.c
index 4db5f09886e..63111f9300f 100644
--- a/src/java.base/share/native/launcher/main.c
+++ b/src/java.base/share/native/launcher/main.c
@@ -152,7 +152,8 @@ static void setup_sighandler() {
     sigact.sa_flags = SA_SIGINFO;
     sigact.sa_sigaction = sighandler;
 
-    for (int sig = 1; sig < __SIGRTMIN; ++sig) {
+    const int MaxSignalValue = 31;
+    for (int sig = 1; sig <= MaxSignalValue; ++sig) {
         if (sig == SIGKILL || sig == SIGSTOP) {
             continue;
         }