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#include <unistd.h>
char **__environ = 0;
weak_alias(__environ, ___environ);
weak_alias(__environ, _environ);
weak_alias(__environ, environ);
#ifdef __EMSCRIPTEN__
#include <stdlib.h>
#include <wasi/api.h>
#include <emscripten/heap.h>
// We use emscripten_builtin_malloc here because this memory is never freed and
// and we don't want LSan to consider this a leak.
__attribute__((constructor(100))) // construct this before user code
void __emscripten_environ_constructor(void) {
size_t environ_count;
size_t environ_buf_size;
__wasi_errno_t err = __wasi_environ_sizes_get(&environ_count,
&environ_buf_size);
if (err != __WASI_ERRNO_SUCCESS) {
return;
}
__environ = emscripten_builtin_malloc(sizeof(char *) * (environ_count + 1));
if (__environ == 0) {
return;
}
char *environ_buf = emscripten_builtin_malloc(sizeof(char) * environ_buf_size);
if (environ_buf == 0) {
__environ = 0;
return;
}
// Ensure null termination.
__environ[environ_count] = 0;
err = __wasi_environ_get((uint8_t**)__environ, environ_buf);
if (err != __WASI_ERRNO_SUCCESS) {
__environ = 0;
}
}
#endif
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