From 8dbda1f9c975edcae24b0724ca53ec2cda7645b3 Mon Sep 17 00:00:00 2001
From: Kirill Likhodedov <Kirill.Likhodedov@jetbrains.com>
Date: Sun, 25 May 2014 16:03:56 +0400
Subject: [PATCH] [vcs] Log executable validation failure reason

---
 .../intellij/execution/ExecutableValidator.java | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/platform/platform-impl/src/com/intellij/execution/ExecutableValidator.java b/platform/platform-impl/src/com/intellij/execution/ExecutableValidator.java
index 79e76f0615e1..0a249c54cc8d 100644
--- a/platform/platform-impl/src/com/intellij/execution/ExecutableValidator.java
+++ b/platform/platform-impl/src/com/intellij/execution/ExecutableValidator.java
@@ -90,9 +90,22 @@ public abstract class ExecutableValidator {
       commandLine.setExePath(executable);
       CapturingProcessHandler handler = new CapturingProcessHandler(commandLine.createProcess(), CharsetToolkit.getDefaultSystemCharset());
       ProcessOutput result = handler.runProcess(60 * 1000);
-      return !result.isTimeout() && (result.getExitCode() == 0) && result.getStderr().isEmpty();
+      boolean timeout = result.isTimeout();
+      int exitCode = result.getExitCode();
+      String stderr = result.getStderr();
+      if (timeout) {
+        LOG.warn("Validation of " + executable + " failed with a timeout");
+      }
+      if (exitCode != 0) {
+        LOG.warn("Validation of " + executable + " failed with non-zero exit code: " + exitCode);
+      }
+      if (!stderr.isEmpty()) {
+        LOG.warn("Validation of " + executable + " failed with a non-empty error output: " + stderr);
+      }
+      return !timeout && exitCode == 0 && stderr.isEmpty();
     }
-    catch (Throwable ignored) {
+    catch (Throwable t) {
+      LOG.warn(t);
       return false;
     }
   }