From b42025bc9f1fe51edb53659af015ea295907522b Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <icculus@icculus.org>
Date: Wed, 6 Apr 2016 15:01:09 -0400
Subject: [PATCH] Unix basedir: Don't read past start of array if $PATH has an
 empty item.

---
 Sources/Engine/Base/Unix/UnixFileSystem.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Sources/Engine/Base/Unix/UnixFileSystem.cpp b/Sources/Engine/Base/Unix/UnixFileSystem.cpp
index 871dc46..08683d0 100644
--- a/Sources/Engine/Base/Unix/UnixFileSystem.cpp
+++ b/Sources/Engine/Base/Unix/UnixFileSystem.cpp
@@ -106,6 +106,7 @@ static char *getUserDirByUID(void)
 }
 
 // !!! FIXME: This could stand to use CTFileNames ...
+// !!! FIXME: When we move to SDL2, just use SDL_GetBasePath()?
 static char *calcExePath(const char *_argv0)
 {
     char *ptr;
@@ -137,6 +138,8 @@ static char *calcExePath(const char *_argv0)
         start = envr;
         do
         {
+            while (*start == ':')
+                start++;  // skip empty entries.
             ptr = strchr(start, ':');
             if (ptr)
                 *ptr = '\0';