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-rw-r--r--third_party/nix/src/libmain/shared.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/third_party/nix/src/libmain/shared.cc b/third_party/nix/src/libmain/shared.cc
index 348b91ab55e9..542dc25957a4 100644
--- a/third_party/nix/src/libmain/shared.cc
+++ b/third_party/nix/src/libmain/shared.cc
@@ -360,7 +360,7 @@ RunPager::RunPager() {
 
 RunPager::~RunPager() {
   try {
-    if (pid != -1) {
+    if (pid != Pid(-1)) {
       std::cout.flush();
       close(STDOUT_FILENO);
       pid.wait();