[PATCH] D45512: [Tooling] Correct the "-std" compile command option.

[Haojian Wu via Phabricator via cfe-commits]

hokein created this revision.
hokein added a reviewer: sammccall.
Herald added a subscriber: klimek.

"-std c++11" is not valid in compiler, we have to use "-std=c++11".

Test in vscode with this patch, code completion for header works as expected.


Repository:
  rC Clang

https://reviews.llvm.org/D45512

Files:
  lib/Tooling/InterpolatingCompilationDatabase.cpp
  unittests/Tooling/CompilationDatabaseTest.cpp


Index: unittests/Tooling/CompilationDatabaseTest.cpp
===================================================================
--- unittests/Tooling/CompilationDatabaseTest.cpp
+++ unittests/Tooling/CompilationDatabaseTest.cpp
@@ -711,9 +711,9 @@
 
   // .h is ambiguous, so we add explicit language flags
   EXPECT_EQ(getCommand("foo.h"),
-            "clang -D dir/foo.cpp -x c++-header -std c++17");
+            "clang -D dir/foo.cpp -x c++-header -std=c++17");
   // and don't add -x if the inferred language is correct.
-  EXPECT_EQ(getCommand("foo.hpp"), "clang -D dir/foo.cpp -std c++17");
+  EXPECT_EQ(getCommand("foo.hpp"), "clang -D dir/foo.cpp -std=c++17");
   // respect -x if it's already there.
   EXPECT_EQ(getCommand("baz.h"), "clang -D dir/baz.cee -x c-header");
   // prefer a worse match with the right language
Index: lib/Tooling/InterpolatingCompilationDatabase.cpp
===================================================================
--- lib/Tooling/InterpolatingCompilationDatabase.cpp
+++ lib/Tooling/InterpolatingCompilationDatabase.cpp
@@ -191,9 +191,9 @@
     // --std flag may only be transferred if the language is the same.
     // We may consider "translating" these, e.g. c++11 -> c11.
     if (Std != LangStandard::lang_unspecified && foldType(TargetType) == Type) {
-      Result.CommandLine.push_back("-std");
       Result.CommandLine.push_back(
-          LangStandard::getLangStandardForKind(Std).getName());
+          "-std=" +
+          std::string(LangStandard::getLangStandardForKind(Std).getName()));
     }
     Result.CommandLine.push_back(Filename);
     return Result;


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