================
@@ -864,8 +873,24 @@ int clang_scan_deps_main(int argc, char **argv, const
llvm::ToolContext &) {
});
SharedStream Errs(llvm::errs());
- // Print out the dependency results to STDOUT by default.
- SharedStream DependencyOS(llvm::outs());
+
+ std::optional<llvm::raw_fd_ostream> FileOS;
+ llvm::raw_ostream &ThreadUnsafeDependencyOS = [&]() -> llvm::raw_ostream & {
+ if (OutputFileName == "-")
+ return llvm::outs();
+
+ if (OutputFileName == "/dev/null")
+ return llvm::nulls();
+
+ std::error_code EC;
+ FileOS.emplace(OutputFileName, EC);
+ if (EC) {
+ llvm::errs() << llvm::errorCodeToError(EC) << '\n';
----------------
benlangmuir wrote:
Would be good to include the fact it's failing during open and what the path is
in this error. Filesystem errrors can be hard to understand without any context
https://github.com/llvm/llvm-project/pull/88767
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