[6.2][Legacy Driver][wasm] Pass --table-base to reserve low function addresses
#84286
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…resses WebAssembly does not have a reserved address space by default, so we need to explicitly reserve low addresses for extra inhabitants for enum types with pointer payloads. swiftlang#39300 added `--global-base` to reserve low data addresses, but we also need to reserve low function addresses with `--table-base` for function pointers because WebAssembly uses a separate address space for function pointers.
bnbarham
approved these changes
Sep 15, 2025
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@swift-ci test |
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Explanation: Fix memory corruption on WebAssembly by properly reserving low-function addresses
Original PRs: #84285
Risk: Low, this only removes a spurious error for library evolution.
Testing: Ensured at desk that the minimum problematic code won't perform bad memory access with ASan instrumentation
Reviewers: @bnbarham