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Make memory.grow 1200x faster #84

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Merged
mohanson merged 1 commit into from
Jul 13, 2025
Merged

Make memory.grow 1200x faster #84

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2 changes: 1 addition & 1 deletion pywasm/core.py
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Original file line number Diff line number Diff line change
Expand Up @@ -643,7 +643,7 @@ def grow(self, n: int) -> None:
if self.type.limits.m:
assert self.size + n <= self.type.limits.m
assert self.size + n <= 65536
self.data.extend([0x00 for _ in range(n * 64 * 1024)])
self.data.extend(bytearray(n * 64 * 1024))
self.size += n

def put_i32(self, addr: int, data: int) -> None:
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