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Disable resilience for modules imported by the MemoryBuffer loader.

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The MemoryBuffer loader is used by LLDB during debugging to import binary Swift
modules from .swift_ast sections. Modules imported from .swift_ast sections are
never produced from textual interfaces. By disabling resilience the expression
evaluator in the debugger can directly access private members.

rdar://79462915
This commit is contained in:
Adrian Prantl
2021-08-24 15:52:10 -07:00
parent 86a715d70e
commit e754f5a6c4
6 changed files with 48 additions and 19 deletions
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5
lib/Serialization/SerializedModuleLoader.cpp
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@@ -1205,6 +1205,11 @@ MemoryBufferSerializedModuleLoader::loadModule(SourceLoc importLoc,
if (!file)
return nullptr;
// The MemoryBuffer loader is used by LLDB during debugging. Modules imported
// from .swift_ast sections are never produced from textual interfaces. By
// disabling resilience the debugger can directly access private members.
if (BypassResilience)
M->setBypassResilience();
M->addFile(*file);
Ctx.addLoadedModule(M);
return M;