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fix: write pointers for environ_get and environ_sizes_get functions #20902

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Merged
just-mitch merged 1 commit into from
Feb 26, 2026
Merged

fix: write pointers for environ_get and environ_sizes_get functions #20902

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17 changes: 11 additions & 6 deletions barretenberg/cpp/src/barretenberg/wasi/wasi_stubs.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -59,17 +59,22 @@ int32_t __imported_wasi_snapshot_preview1_fd_close(int32_t)
return 0;
}

int32_t __imported_wasi_snapshot_preview1_environ_get(int32_t, int32_t)
int32_t __imported_wasi_snapshot_preview1_environ_get(int32_t environ_ptr, int32_t environ_buf_ptr)
{
// info("environ_get not implemented.");
// abort();
// No environment variables, so nothing to write. The pointers point to
// arrays that would hold the environ entries and the concatenated
// key=value strings respectively, but with count == 0 they are empty.
(void)environ_ptr;
(void)environ_buf_ptr;
return 0;
}

int32_t __imported_wasi_snapshot_preview1_environ_sizes_get(int32_t, int32_t)
int32_t __imported_wasi_snapshot_preview1_environ_sizes_get(int32_t count_ptr, int32_t buf_size_ptr)
{
// info("environ_sizes_get not implemented.");
// abort();
// WASI requires writing the number of environment variables and the total
// buffer size needed to hold them. We have none of either.
*(int32_t*)(uintptr_t)count_ptr = 0;
*(int32_t*)(uintptr_t)buf_size_ptr = 0;
return 0;
}

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