[Lldb-commits] [lldb] r370848 - [lldb][NFC] Add a simple test for thread_local storage.

[Frédéric Riss via lldb-commits]

> On Sep 4, 2019, at 1:02 AM, Raphael Isemann via lldb-commits <lldb-commits at lists.llvm.org> wrote:
> 
> Author: teemperor
> Date: Wed Sep  4 01:02:52 2019
> New Revision: 370848
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=370848&view=rev
> Log:
> [lldb][NFC] Add a simple test for thread_local storage.
> 
> Seems we fail to read TLS data on Linux, so the test only runs on
> macOS for now. We will see how this test runs on the BSD bots.
> 
> Added:
>    lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/
>    lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/Makefile
>    lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/TestThreadLocal.py
>    lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/main.cpp
> 
> Added: lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/Makefile
> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/Makefile?rev=370848&view=auto
> ==============================================================================
> --- lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/Makefile (added)
> +++ lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/Makefile Wed Sep  4 01:02:52 2019
> @@ -0,0 +1,3 @@
> +LEVEL = ../../../make
> +CXX_SOURCES := main.cpp
> +include $(LEVEL)/Makefile.rules
> 
> Added: lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/TestThreadLocal.py
> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/TestThreadLocal.py?rev=370848&view=auto
> ==============================================================================
> --- lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/TestThreadLocal.py (added)
> +++ lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/TestThreadLocal.py Wed Sep  4 01:02:52 2019
> @@ -0,0 +1,5 @@
> +from lldbsuite.test import lldbinline
> +from lldbsuite.test import decorators
> +
> +lldbinline.MakeInlineTest(__file__, globals(),
> +                          lldbinline.expectedFailureAll(oslist=["windows", "linux"]))
> 
> Added: lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/main.cpp
> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/main.cpp?rev=370848&view=auto
> ==============================================================================
> --- lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/main.cpp (added)
> +++ lldb/trunk/packages/Python/lldbsuite/test/lang/cpp/thread_local/main.cpp Wed Sep  4 01:02:52 2019
> @@ -0,0 +1,17 @@
> +int storage = 45;
> +thread_local int tl_global_int = 123;
> +thread_local int *tl_global_ptr = &storage;
> +
> +int main(int argc, char **argv) {
> +  //% self.expect("expr tl_local_int", error=True, substrs=["couldn't get the value of variable tl_local_int"])
> +  //% self.expect("expr *tl_local_ptr", error=True, substrs=["couldn't get the value of variable tl_local_ptr"])
> +  thread_local int tl_local_int = 321;
> +  thread_local int *tl_local_ptr = nullptr;
> +  tl_local_ptr = &tl_local_int;
> +  tl_local_int++;
> +  //% self.expect("expr tl_local_int + 1", substrs=["int", "= 323"])
> +  //% self.expect("expr *tl_local_ptr + 2", substrs=["int", "= 324"])
> +  //% self.expect("expr tl_global_int", substrs=["int", "= 123"])
> +  //% self.expect("expr *tl_global_ptr", substrs=["int", "= 45"])
> +  return 0;
> +}

Is frame variable able to get the value of the TLS variables, or do we rely on the Clang codeine here? I don’t remember if accessing TLS requires a function call on Darwin.

Fred

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