[clang] 2935737 - [clang][tooling] Create SourceManager for DiagnosticsEngine before command-line parsing
Jan Svoboda via cfe-commits
cfe-commits at lists.llvm.org
Tue Apr 6 01:40:54 PDT 2021
Author: Jan Svoboda
Date: 2021-04-06T10:40:47+02:00
New Revision: 2935737da32dd21bf02e1a3c912a340de660d557
URL: https://github.com/llvm/llvm-project/commit/2935737da32dd21bf02e1a3c912a340de660d557
DIFF: https://github.com/llvm/llvm-project/commit/2935737da32dd21bf02e1a3c912a340de660d557.diff
LOG: [clang][tooling] Create SourceManager for DiagnosticsEngine before command-line parsing
In D84673, we started using `DiagnosticsEngine` during command-line parsing in more contexts.
When using `ToolInvocation`, a custom `DiagnosticsConsumer` can be specified and it might expect `SourceManager` to be present on the emitted diagnostics.
This patch ensures the `SourceManager` is set up in such scenarios.
Test authored by Jordan Rupprecht.
Reviewed By: rupprecht
Differential Revision: https://reviews.llvm.org/D99414
Added:
Modified:
clang/lib/Tooling/Tooling.cpp
clang/unittests/Tooling/ToolingTest.cpp
Removed:
################################################################################
diff --git a/clang/lib/Tooling/Tooling.cpp b/clang/lib/Tooling/Tooling.cpp
index b28e8f6a7c96..463f466d9b76 100644
--- a/clang/lib/Tooling/Tooling.cpp
+++ b/clang/lib/Tooling/Tooling.cpp
@@ -334,6 +334,10 @@ bool ToolInvocation::run() {
DiagnosticsEngine Diagnostics(
IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs()), &*DiagOpts,
DiagConsumer ? DiagConsumer : &DiagnosticPrinter, false);
+ // Although `Diagnostics` are used only for command-line parsing, the custom
+ // `DiagConsumer` might expect a `SourceManager` to be present.
+ SourceManager SrcMgr(Diagnostics, *Files);
+ Diagnostics.setSourceManager(&SrcMgr);
const std::unique_ptr<driver::Driver> Driver(
newDriver(&Diagnostics, BinaryName, &Files->getVirtualFileSystem()));
diff --git a/clang/unittests/Tooling/ToolingTest.cpp b/clang/unittests/Tooling/ToolingTest.cpp
index 691a847d5a71..313e8325c615 100644
--- a/clang/unittests/Tooling/ToolingTest.cpp
+++ b/clang/unittests/Tooling/ToolingTest.cpp
@@ -221,6 +221,43 @@ TEST(ToolInvocation, TestVirtualModulesCompilation) {
EXPECT_TRUE(Invocation.run());
}
+struct DiagnosticConsumerExpectingSourceManager : public DiagnosticConsumer {
+ bool SawSourceManager;
+
+ DiagnosticConsumerExpectingSourceManager() : SawSourceManager(false) {}
+
+ void HandleDiagnostic(clang::DiagnosticsEngine::Level,
+ const clang::Diagnostic &info) override {
+ SawSourceManager = info.hasSourceManager();
+ }
+};
+
+TEST(ToolInvocation, DiagConsumerExpectingSourceManager) {
+ llvm::IntrusiveRefCntPtr<llvm::vfs::OverlayFileSystem> OverlayFileSystem(
+ new llvm::vfs::OverlayFileSystem(llvm::vfs::getRealFileSystem()));
+ llvm::IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> InMemoryFileSystem(
+ new llvm::vfs::InMemoryFileSystem);
+ OverlayFileSystem->pushOverlay(InMemoryFileSystem);
+ llvm::IntrusiveRefCntPtr<FileManager> Files(
+ new FileManager(FileSystemOptions(), OverlayFileSystem));
+ std::vector<std::string> Args;
+ Args.push_back("tool-executable");
+ // Note: intentional error; user probably meant -ferror-limit=0.
+ Args.push_back("-ferror-limit=-1");
+ Args.push_back("-fsyntax-only");
+ Args.push_back("test.cpp");
+ clang::tooling::ToolInvocation Invocation(
+ Args, std::make_unique<SyntaxOnlyAction>(), Files.get());
+ InMemoryFileSystem->addFile(
+ "test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int main() {}\n"));
+
+ DiagnosticConsumerExpectingSourceManager Consumer;
+ Invocation.setDiagnosticConsumer(&Consumer);
+
+ EXPECT_TRUE(Invocation.run());
+ EXPECT_TRUE(Consumer.SawSourceManager);
+}
+
struct VerifyEndCallback : public SourceFileCallbacks {
VerifyEndCallback() : BeginCalled(0), EndCalled(0), Matched(false) {}
bool handleBeginSource(CompilerInstance &CI) override {
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