[PATCH] D139088: [clangd] Log diagnostics if we failed to create a preamble.

[Sam McCall via Phabricator via cfe-commits]

sammccall created this revision.
sammccall added a reviewer: hokein.
Herald added subscribers: kadircet, arphaman.
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Really we want these to be shown to the client, but the path to do so involves
storing them in

Bandaid for https://github.com/clangd/clangd/issues/1408
See https://github.com/clangd/clangd/issues/1399 for motivation


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D139088

Files:
  clang-tools-extra/clangd/Preamble.cpp


Index: clang-tools-extra/clangd/Preamble.cpp
===================================================================
--- clang-tools-extra/clangd/Preamble.cpp
+++ clang-tools-extra/clangd/Preamble.cpp
@@ -571,6 +571,12 @@
 
   elog("Could not build a preamble for file {0} version {1}: {2}", FileName,
        Inputs.Version, BuiltPreamble.getError().message());
+  for (const Diag &D : PreambleDiagnostics.take()) {
+    if (D.Severity < DiagnosticsEngine::Error)
+      continue;
+    // Not an ideal way to show errors, but better than nothing!
+    elog("  error: {0}", D.Message);
+  }
   return nullptr;
 }
 


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