yaron.keren added a comment.
findGccDir() can return llvm::ErrorOr<std::string> and then all Base
assignments happen at the same if-elseif-else:
if (getDriver().SysRoot.size())
Base = getDriver().SysRoot;
else if (llvm::ErrorOr<std::string> GPPName = findGccDir())
Base = llvm::sys::path::parent_path(
llvm::sys::path::parent_path(GPPName.get()));
else
Base = llvm::sys::path::parent_path(getDriver().getInstalledDir());
Then, findGccDir() is actually findGcc().
About tests, adding empty script "gcc" with x set in the directory structure,
and adding the directory to the path at start of the LIT test may work. It will
fail on Windows so try this with a new test file so we can XFAIL:windows only
the new one if required.
http://reviews.llvm.org/D15006
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