From 5619fefe0a540ae9c17c660d0826db36ffe75b8c Mon Sep 17 00:00:00 2001
From: Leonid Yuriev <leo@yuriev.ru>
Date: Tue, 17 Nov 2020 15:28:52 +0300
Subject: [PATCH] mdbx-test: fix `actor_poll()` against the `EBADF` error from
 pipe.

---
 test/osal-unix.cc | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/test/osal-unix.cc b/test/osal-unix.cc
index 57643667..7c0bedbc 100644
--- a/test/osal-unix.cc
+++ b/test/osal-unix.cc
@@ -414,6 +414,7 @@ int osal_actor_poll(mdbx_pid_t &pid, unsigned timeout) {
   while (sigalarm_tail == sigalarm_head) {
     int status;
     pid = waitpid(0, &status, options);
+    const int err = errno;
 
     if (pid > 0) {
       if (WIFEXITED(status))
@@ -437,20 +438,19 @@ int osal_actor_poll(mdbx_pid_t &pid, unsigned timeout) {
     if (sigusr1_tail != sigusr1_head) {
       sigusr1_tail = sigusr1_head;
       logging::progress_canary(true);
-      if (pid < 0 && errno == EINTR)
+      if (pid < 0 && err == EINTR)
         continue;
     }
     if (sigusr2_tail != sigusr2_head) {
       sigusr2_tail = sigusr2_head;
       logging::progress_canary(false);
-      if (pid < 0 && errno == EINTR)
+      if (pid < 0 && err == EINTR)
         continue;
     }
 
     if (pid == 0)
       break;
 
-    int err = errno;
     if (err != EINTR)
       return err;
   }