diff options
| author | Yuta Saito <[email protected]> | 2025-02-18 16:06:36 +0000 |
|---|---|---|
| committer | Yuta Saito <[email protected]> | 2025-02-19 11:46:12 +0900 |
| commit | eac35edfd1101e8f7c34dbdd7b595fdac8f0ad4c (patch) | |
| tree | 99763c439ee6653313f69d60a01949dc3fd26abd /gc/default/default.c | |
| parent | 4f7dfbe58ee2915b0724251c6464c9b4e0c34245 (diff) | |
[wasm] Stop using mprotect(PROT_NONE) on WASI
we had been using a stub weak definition of `mprotect` in wasm/missing.c
so far, but wasi-sdk 23 added mprotect emulation to wasi-libc[^1], so the
emulation is now linked instead. However, the emulation doesn't support
PROT_NONE and fails with ENOSYS, so we need to avoid calling mprotect
completely on WASI.
[^1]: https://github.com/WebAssembly/wasi-libc/commit/7528b13170462c82e367d91ae0ecead84e470ceb
Notes
Notes:
Merged: https://github.com/ruby/ruby/pull/12776
Diffstat (limited to 'gc/default/default.c')
| -rw-r--r-- | gc/default/default.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gc/default/default.c b/gc/default/default.c index 7e0049bb4f..4cf39a0331 100644 --- a/gc/default/default.c +++ b/gc/default/default.c @@ -3199,6 +3199,10 @@ protect_page_body(struct heap_page_body *body, DWORD protect) DWORD old_protect; return VirtualProtect(body, HEAP_PAGE_SIZE, protect, &old_protect) != 0; } +#elif defined(__wasi__) +// wasi-libc's mprotect emulation does not support PROT_NONE +enum {HEAP_PAGE_LOCK, HEAP_PAGE_UNLOCK}; +#define protect_page_body(body, protect) 1 #else enum {HEAP_PAGE_LOCK = PROT_NONE, HEAP_PAGE_UNLOCK = PROT_READ | PROT_WRITE}; #define protect_page_body(body, protect) !mprotect((body), HEAP_PAGE_SIZE, (protect)) |