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LibWasm: Validate tables, memories, globals, elements and data correctly

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These sections are supposed to be validated with only the imported
globals.
This commit is contained in:
Ali Mohammad Pur 2025-05-07 17:28:36 +02:00 • committed by Andrew Kaster
parent 1bcbd008d6
commit 292688e249
Notes: github-actions[bot] 2025-05-08 09:36:12 +00:00
1 changed files with 19 additions and 5 deletions
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14
Libraries/LibWasm/AbstractMachine/Validator.cpp
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@ -79,6 +79,8 @@ ErrorOr<void, ValidationError> Validator::validate(Module& module)
for (auto& memory : module.memory_section().memories())
m_context.memories.append(memory.type());
auto imported_globals = m_context.globals;
m_context.globals.ensure_capacity(m_context.globals.size() + module.global_section().entries().size());
for (auto& global : module.global_section().entries())
m_context.globals.append(global.type());
@ -117,11 +119,23 @@ ErrorOr<void, ValidationError> Validator::validate(Module& module)
TRY(validate(module.import_section()));
TRY(validate(module.export_section()));
TRY(validate(module.start_section()));
{
// Let C′ be the same context as C, except that C′.globals is just the sequence globals(it∗).
// Under the context C′:
// For each table_i in module.tables, the definition table_i must be val_i with a table type tt_i.
// For each mem_i in module.mems, the definition mem_i must be val_i with a memory type mt_i.
// For each global_i in module.globals, the definition global_i must be val_i with a global type gt_i.
// For each elem_i in module.elems, the segment elem_i must be val_i with reference type rt_i.
// For each data_i in module.datas, the segment data_i must be val_i.
TemporaryChange omit_internal_globals { m_context.globals, imported_globals };
TRY(validate(module.data_section()));
TRY(validate(module.element_section()));
TRY(validate(module.global_section()));
TRY(validate(module.memory_section()));
TRY(validate(module.table_section()));
}
TRY(validate(module.code_section()));
module.set_validation_status(Module::ValidationStatus::Valid, {});