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std: Don't assume dlopen() works on yourself

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Statically linked executables do not succeed (aka MUSL-based executables).
This commit is contained in:
Alex Crichton 2015-04-21 20:01:34 -07:00
parent 5f518ad658
commit 7dd62155d8
1 changed files with 4 additions and 1 deletions
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5
src/libstd/sys/unix/thread.rs
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@ -342,7 +342,10 @@ fn min_stack_size(attr: *const libc::pthread_attr_t) -> usize {
static mut __pthread_get_minstack: Option<F> = None;
INIT.call_once(|| {
let lib = DynamicLibrary::open(None).unwrap();
let lib = match DynamicLibrary::open(None) {
Ok(l) => l,
Err(..) => return,
};
unsafe {
if let Ok(f) = lib.symbol("__pthread_get_minstack") {
__pthread_get_minstack = Some(mem::transmute::<*const (), F>(f));