From 7f4d471cba8336f89d937b0c791f88ec76a94313 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 13 Jan 2026 22:27:40 +0000
Subject: [PATCH 1/5] Initial plan


From 41eda9bbe75a42bb8bad59c21e274566aa335356 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 13 Jan 2026 22:32:32 +0000
Subject: [PATCH 2/5] Define CLOSE_RANGE_CLOEXEC for Alpine compatibility

Co-authored-by: rzhao271 <7199958+rzhao271@users.noreply.github.com>
---
 src/unix/pty.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/unix/pty.cc b/src/unix/pty.cc
index a20bde53..3f3471f1 100644
--- a/src/unix/pty.cc
+++ b/src/unix/pty.cc
@@ -114,6 +114,11 @@ struct ExitEvent {
 
 #if defined(__linux__)
 
+/* Define CLOSE_RANGE_CLOEXEC if not available (e.g., on Alpine/musl) */
+#ifndef CLOSE_RANGE_CLOEXEC
+#define CLOSE_RANGE_CLOEXEC (1U << 2)
+#endif
+
 static int
 SetCloseOnExec(int fd) {
   int flags = fcntl(fd, F_GETFD, 0);

From 4d2751d734ad2440cfe409b3ba114918dbee01cd Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 13 Jan 2026 22:33:34 +0000
Subject: [PATCH 3/5] Final verification complete

Co-authored-by: rzhao271 <7199958+rzhao271@users.noreply.github.com>
---
 _codeql_detected_source_root | 1 +
 1 file changed, 1 insertion(+)
 create mode 120000 _codeql_detected_source_root

diff --git a/_codeql_detected_source_root b/_codeql_detected_source_root
new file mode 120000
index 00000000..945c9b46
--- /dev/null
+++ b/_codeql_detected_source_root
@@ -0,0 +1 @@
+.
\ No newline at end of file

From d85b6372de830dfd979e09667aa60f1ed58335fd Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 13 Jan 2026 22:34:13 +0000
Subject: [PATCH 4/5] Add CodeQL symlink to gitignore

Co-authored-by: rzhao271 <7199958+rzhao271@users.noreply.github.com>
---
 .gitignore                   | 1 +
 _codeql_detected_source_root | 1 -
 2 files changed, 1 insertion(+), 1 deletion(-)
 delete mode 120000 _codeql_detected_source_root

diff --git a/.gitignore b/.gitignore
index 38ab6b10..7de13cd9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,4 @@ fixtures/space folder/
 .vscode/ipch/
 yarn.lock
 prebuilds/
+_codeql_detected_source_root
diff --git a/_codeql_detected_source_root b/_codeql_detected_source_root
deleted file mode 120000
index 945c9b46..00000000
--- a/_codeql_detected_source_root
+++ /dev/null
@@ -1 +0,0 @@
-.
\ No newline at end of file

From fd2eea6967a99b71955a82756a1af07316bcf93c Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 13 Jan 2026 22:43:49 +0000
Subject: [PATCH 5/5] Check for CLOSE_RANGE_CLOEXEC instead of defining it

Co-authored-by: rzhao271 <7199958+rzhao271@users.noreply.github.com>
---
 src/unix/pty.cc | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/src/unix/pty.cc b/src/unix/pty.cc
index 3f3471f1..9df942ef 100644
--- a/src/unix/pty.cc
+++ b/src/unix/pty.cc
@@ -114,11 +114,6 @@ struct ExitEvent {
 
 #if defined(__linux__)
 
-/* Define CLOSE_RANGE_CLOEXEC if not available (e.g., on Alpine/musl) */
-#ifndef CLOSE_RANGE_CLOEXEC
-#define CLOSE_RANGE_CLOEXEC (1U << 2)
-#endif
-
 static int
 SetCloseOnExec(int fd) {
   int flags = fcntl(fd, F_GETFD, 0);
@@ -136,7 +131,7 @@ SetCloseOnExec(int fd) {
 static void
 pty_close_inherited_fds() {
   // Try close_range() first (Linux 5.9+, glibc 2.34+)
-  #if defined(SYS_close_range)
+  #if defined(SYS_close_range) && defined(CLOSE_RANGE_CLOEXEC)
   if (syscall(SYS_close_range, 3, ~0U, CLOSE_RANGE_CLOEXEC) == 0) {
     return;
   }