From a931b9eaf1486eedccbcd953450664b097676311 Mon Sep 17 00:00:00 2001
From: Rokas Kupstys <rokups@zoho.com>
Date: Tue, 18 Dec 2018 17:10:39 +0200
Subject: [PATCH] HOST_NAME_MAX and LOGIN_NAME_MAX availability is not
 consistent across linux/android/macos platforms. However all of them do have
 versions of these macros with _POSIX_ prefix. In addition to that hostname
 and user variables may be uninitialized in some configurations, however they
 are always used. Initializing these arrays fixes conditional depending on
 uninitialized memory warning uncovered by valgrind.

---
 client/TracyProfiler.cpp | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/client/TracyProfiler.cpp b/client/TracyProfiler.cpp
index 59e603c2..cccb99bd 100644
--- a/client/TracyProfiler.cpp
+++ b/client/TracyProfiler.cpp
@@ -289,17 +289,10 @@ static const char* GetHostInfo()
 
     ptr += sprintf( ptr, "User: %s@%s\n", user, hostname );
 #else
-#  ifndef HOST_NAME_MAX
-    const size_t HOST_NAME_MAX = 1024u;
-#  endif
-#  ifndef LOGIN_NAME_MAX
-    const size_t LOGIN_NAME_MAX = 1024u;
-#  endif
+    char hostname[_POSIX_HOST_NAME_MAX]{};
+    char user[_POSIX_LOGIN_NAME_MAX]{};
 
-    char hostname[HOST_NAME_MAX];
-    char user[LOGIN_NAME_MAX];
-
-    gethostname( hostname, HOST_NAME_MAX );
+    gethostname( hostname, _POSIX_HOST_NAME_MAX );
 #  if defined __ANDROID__
     const auto login = getlogin();
     if( login )
@@ -311,7 +304,7 @@ static const char* GetHostInfo()
         memcpy( user, "(?)", 4 );
     }
 #  else
-    getlogin_r( user, LOGIN_NAME_MAX );
+    getlogin_r( user, _POSIX_LOGIN_NAME_MAX );
 #  endif
 
     ptr += sprintf( ptr, "User: %s@%s\n", user, hostname );