Commits on Jul 17, 2023

1. environment variable APPDATA is not available in linux on default, in… …

   …stead use /tmp folder
   
   On most of linux distros, pPath = getenv("APPDATA") is returning null.
   When executing "Strncpy(m_cacheFilePath, pPath, sizeof(m_cacheFilePath));" in "Device::InitOutputPaths()",
   pPath is staying null. Because of that, m_cacheFilePath is receiving null value.  That causes an issue as below.
   
   In llpcCompiler.cpp:459,
   const char *shaderCachePath = cl::ShaderCacheFileDir.c_str();
   
   shaderCachePath is assigned as null which causes empty() to return true. On linux, it enters into llvm_unreachable...
   
   f (cl::ShaderCacheFileDir.empty()) {
   #ifdef WIN_OS
       shaderCachePath = getenv("LOCALAPPDATA");
       assert(shaderCachePath);
   #else
       llvm_unreachable("Should never be called!");
   #endif
     }

   

   munubaykal authored Jul 17, 2023
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