From: Joel Rosdahl <joel@rosdahl.net>
Date: Sat, 27 Aug 2022 19:56:03 +0000 (+0200)
Subject: fix: Handle failure to write to stderr when failing to write to log file
X-Git-Tag: v4.7~92
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=11432b8c9c406a2084c1f1eec15703904251fd1e;p=thirdparty%2Fccache.git

fix: Handle failure to write to stderr when failing to write to log file

This can happen with

    CCACHE_LOGFILE=/dev/stdout ccache compiler ... |& head -n 1

or similar.
---

diff --git a/src/Logging.cpp b/src/Logging.cpp
index 46b62f554..82e4b1c23 100644
--- a/src/Logging.cpp
+++ b/src/Logging.cpp
@@ -66,10 +66,14 @@ bool debug_log_enabled = false;
 print_fatal_error_and_exit()
 {
   // Note: Can't throw Fatal since that would lead to recursion.
-  PRINT(stderr,
-        "ccache: error: Failed to write to {}: {}\n",
-        logfile_path,
-        strerror(errno));
+  try {
+    PRINT(stderr,
+          "ccache: error: Failed to write to {}: {}\n",
+          logfile_path,
+          strerror(errno));
+  } catch (std::runtime_error&) {
+    // Ignore since we can't do anything about it.
+  }
   exit(EXIT_FAILURE);
 }