[Lldb-commits] [lldb] [lldb] Avoid force loading symbols in statistics collection (PR #136236)

[via lldb-commits]

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@@ -749,10 +749,20 @@ TEST_F(SymtabTest, TestSymtabCreatedOnDemand) {
   ASSERT_THAT_EXPECTED(ExpectedFile, llvm::Succeeded());
   auto module_sp = std::make_shared<Module>(ExpectedFile->moduleSpec());
 
-  // The symbol table should not be loaded by default.
+  // The symbol file should not be created by default.
   Symtab *module_symtab = module_sp->GetSymtab(/*can_create=*/false);
   ASSERT_EQ(module_symtab, nullptr);
 
+  // Even if the symbol file is created, the symbol table should not be created by default.
+
+  // TODO:
+  // I need to create a symbol file here, but without causing it to parse the symbol table.
+  // See next line as a failed attempt.
+
+  // module_sp->GetSymbolFile(/*can_create=*/true); // Cannot do this because it will parse the symbol table.
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royitaqi wrote:

> So is the problem that you don't know how to create a SymbolFile that doesn't have its SymbolTable loaded?

Correct.

> Can you debug this example to see how that SymbolFile was created?

The same thing doesn't reproduce on Linux. I suppose this is due to how dynamic loaders of Linux and macOS work differently (e.g. on macOS I immediately see a.out + system libraries after target create; while on Linux I only see a.out).

My hope is that the finding can be translated into a unit test which need to work on Linux.

https://github.com/llvm/llvm-project/pull/136236