christoph/wamr
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Fix potential integer overflow issues (#4429)

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It is reported as "Multiplication result converted to larger type".
And "Multiplication result may overflow 'Type A' before it is
converted to 'Type B'." Type A is a larger type than Type B.

Since the conversion applies after the multiplication, arithmetic
overflow may still occur.

> The rule flags every multiplication of two non-constant integer expressions
> that is (explicitly or implicitly) converted to a larger integer type. The
> conversion is an indication that the expression would produce a result that
> would be too large to fit in the smaller integer type.
This commit is contained in:
liang.he
2025-07-01 13:39:30 +08:00
committed by GitHub
parent 8949797c84
commit c7148a6823
5 changed files with 8 additions and 6 deletions
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2
core/iwasm/interpreter/wasm_runtime.c
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@ -4161,7 +4161,7 @@ wasm_get_module_inst_mem_consumption(const WASMModuleInstance *module_inst,
sizeof(WASMMemoryInstance *) * module_inst->memory_count;
for (i = 0; i < module_inst->memory_count; i++) {
WASMMemoryInstance *memory = module_inst->memories[i];
size = memory->num_bytes_per_page * memory->cur_page_count;
size = (uint64)memory->num_bytes_per_page * memory->cur_page_count;
mem_conspn->memories_size += size;
mem_conspn->app_heap_size += memory->heap_data_end - memory->heap_data;
/* size of app heap structure */