[libcxx-commits] [libcxx] [lldb] [libcxx] adds a size-based representation for `vector`'s unstable ABI (PR #155330)

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``````````bash
darker --check --diff -r origin/main...HEAD lldb/test/API/functionalities/data-formatter/data-formatter-stl/libcxx-simulators/vector/TestDataFormatterLibcxxVectorSimulator.py libcxx/utils/gdb/libcxx/printers.py lldb/test/API/functionalities/data-formatter/data-formatter-stl/libcxx-simulators/invalid-vector/TestDataFormatterLibcxxInvalidVectorSimulator.py
``````````

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View the diff from darker here.
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``````````diff
--- lldb/test/API/functionalities/data-formatter/data-formatter-stl/libcxx-simulators/vector/TestDataFormatterLibcxxVectorSimulator.py	2026-06-08 19:56:08.000000 +0000
+++ lldb/test/API/functionalities/data-formatter/data-formatter-stl/libcxx-simulators/vector/TestDataFormatterLibcxxVectorSimulator.py	2026-06-08 19:58:40.203850 +0000
@@ -1,9 +1,10 @@
 import lldb
 from lldbsuite.test.decorators import *
 from lldbsuite.test.lldbtest import *
 from lldbsuite.test import lldbutil
+
 
 class LibcxxVectorDataFormatterSimulatorTestCase(TestBase):
     SHARED_BUILD_TESTCASE = False
     NO_DEBUG_INFO_TESTCASE = True
     test_cases = {
@@ -13,11 +14,13 @@
     }
 
     def _run_test(self, test_case):
         cxxflags_extras = f"-DLLDB_TEST_CASE={test_case}"
         self.build(dictionary=dict(CXXFLAGS_EXTRAS=cxxflags_extras))
-        lldbutil.run_to_source_breakpoint(self, "break here", lldb.SBFileSpec("main.cpp"))
+        lldbutil.run_to_source_breakpoint(
+            self, "break here", lldb.SBFileSpec("main.cpp")
+        )
 
         self.expect(
             "frame variable v0",
             substrs=["size=0"],
         )

``````````

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https://github.com/llvm/llvm-project/pull/155330