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std: check if TCS is a null pointer

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joboet 2022-09-05 11:42:46 +02:00
parent 9358d09a55
commit 2fa58080cb
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1 changed files with 6 additions and 2 deletions
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8
library/std/src/sys/sgx/abi/thread.rs
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@ -7,7 +7,11 @@ use fortanix_sgx_abi::Tcs;
#[unstable(feature = "sgx_platform", issue = "56975")]
pub fn current() -> Tcs {
extern "C" {
fn get_tcs_addr() -> Tcs;
fn get_tcs_addr() -> *mut u8;
}
let addr = unsafe { get_tcs_addr() };
match Tcs::new(addr) {
Some(tcs) => tcs,
None => rtabort!("TCS must not be placed at address zero (this is a linker error)"),
}
unsafe { get_tcs_addr() }
}