r351317 - [Support] Remove error return value from one overload of fs::make_absolute

[Pavel Labath via cfe-commits]

Author: labath
Date: Wed Jan 16 01:55:32 2019
New Revision: 351317

URL: http://llvm.org/viewvc/llvm-project?rev=351317&view=rev
Log:
[Support] Remove error return value from one overload of fs::make_absolute

Summary:
The version of make_absolute which accepted a specific directory to use
as the "base" for the computation could never fail, even though it
returned a std::error_code. The reason for that seems to be historical
-- the CWD flavour (which can fail due to failure to retrieve CWD) was
there first, and the new version was implemented by extending that.

This removes the error return value from the non-CWD overload and
reimplements the CWD version on top of that. This enables us to remove
some dead code where people were pessimistically trying to handle the
errors returned from this function.

Reviewers: zturner, sammccall

Subscribers: hiraditya, kristina, llvm-commits

Differential Revision: https://reviews.llvm.org/D56599

Modified:
    cfe/trunk/lib/Lex/HeaderSearch.cpp

Modified: cfe/trunk/lib/Lex/HeaderSearch.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Lex/HeaderSearch.cpp?rev=351317&r1=351316&r2=351317&view=diff
==============================================================================
--- cfe/trunk/lib/Lex/HeaderSearch.cpp (original)
+++ cfe/trunk/lib/Lex/HeaderSearch.cpp Wed Jan 16 01:55:32 2019
@@ -1678,9 +1678,8 @@ std::string HeaderSearch::suggestPathToF
     StringRef Dir = SearchDirs[I].getDir()->getName();
     llvm::SmallString<32> DirPath(Dir.begin(), Dir.end());
     if (!WorkingDir.empty() && !path::is_absolute(Dir)) {
-      auto err = fs::make_absolute(WorkingDir, DirPath);
-      if (!err)
-        path::remove_dots(DirPath, /*remove_dot_dot=*/true);
+      fs::make_absolute(WorkingDir, DirPath);
+      path::remove_dots(DirPath, /*remove_dot_dot=*/true);
       Dir = DirPath;
     }
     for (auto NI = path::begin(File), NE = path::end(File),