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std::unix::stack_overflow::drop_handler addressing todo through libc … #126207

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Oct 18, 2024
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std::unix::stack_overflow::drop_handler addressing todo through libc … #126207

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4 changes: 1 addition & 3 deletions library/std/src/sys/pal/unix/stack_overflow.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -265,9 +265,7 @@ mod imp {
/// Modern kernels on modern hardware can have dynamic signal stack sizes.
#[cfg(any(target_os = "linux", target_os = "android"))]
fn sigstack_size() -> usize {
// FIXME: reuse const from libc when available?
const AT_MINSIGSTKSZ: crate::ffi::c_ulong = 51;
let dynamic_sigstksz = unsafe { libc::getauxval(AT_MINSIGSTKSZ) };
let dynamic_sigstksz = unsafe { libc::getauxval(libc::AT_MINSIGSTKSZ) };
// If getauxval couldn't find the entry, it returns 0,
// so take the higher of the "constant" and auxval.
// This transparently supports older kernels which don't provide AT_MINSIGSTKSZ
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