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LibJS/Bytecode: Restore old environments when an exception is caught

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Unwind contexts now remember the lexical and variable environments in
effect when they were created. If an exception is caught, we revert
to those environments in the running execution context.
This commit is contained in:
Andreas Kling
2023-05-13 18:53:14 +02:00
parent 81a62f4f59
commit ce634957c1
Notes: sideshowbarker 2024-07-17 01:55:29 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/ce634957c1
Pull-request: https://github.com/SerenityOS/serenity/pull/18818
2 changed files with 12 additions and 1 deletions
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4
Userland/Libraries/LibJS/Bytecode/BasicBlock.h
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@@ -9,6 +9,7 @@
#include <AK/Badge.h>
#include <AK/DeprecatedString.h>
#include <LibJS/Forward.h>
#include <LibJS/Heap/Handle.h>
namespace JS::Bytecode {
@@ -16,6 +17,9 @@ struct UnwindInfo {
Executable const* executable;
BasicBlock const* handler;
BasicBlock const* finalizer;
Handle<Environment> lexical_environment;
Handle<Environment> variable_environment;
};
class BasicBlock {