rust/library/panic_unwind/src, branch 1.66.1

Fix build of thumbv7a-pc-windows-msvc

2022-12-12T14:34:58+00:00

Fix alloc size

2022-10-23T19:30:16+00:00

Apply suggestion

2022-10-23T19:30:16+00:00

Co-authored-by: Amanieu d'Antras

Implement Rust foreign exception protection for EMCC and SEH

2022-10-23T19:30:16+00:00

Prevent foreign Rust exceptions from being caught

2022-10-23T19:30:16+00:00

Auto merge of #92845 - Amanieu:std_personality, r=Mark-Simulacrum

2022-08-28T04:16:29+00:00

Move EH personality functions to std These were previously in the panic_unwind crate with dummy stubs in the panic_abort crate. However it turns out that this is insufficient: we still need a proper personality function even with -C panic=abort to handle the following cases: 1) `extern "C-unwind"` still needs to catch foreign exceptions with -C panic=abort to turn them into aborts. This requires landing pads and a personality function. 2) ARM EHABI uses the personality function when creating backtraces. The dummy personality function in panic_abort was causing backtrace generation to get stuck in a loop since the personality function is responsible for advancing the unwind state to the next frame. Fixes #41004

Use renamed atomic intrinsics in panic_unwind

2022-08-23T14:24:59+00:00

Remove custom frame info registration on i686-pc-windows-gnu

2022-08-23T08:12:58+00:00

The indirection is no longer needed since we always link to libgcc even when the panic_abort runtime is used. Instead we can just call the libgcc functions directly.

Move personality functions to std

2022-08-23T08:12:58+00:00

These were previously in the panic_unwind crate with dummy stubs in the panic_abort crate. However it turns out that this is insufficient: we still need a proper personality function even with -C panic=abort to handle the following cases: 1) `extern "C-unwind"` still needs to catch foreign exceptions with -C panic=abort to turn them into aborts. This requires landing pads and a personality function. 2) ARM EHABI uses the personality function when creating backtraces. The dummy personality function in panic_abort was causing backtrace generation to get stuck in a loop since the personality function is responsible for advancing the unwind state to the next frame.

Fix comment on the SEH personality function

2022-08-23T03:14:40+00:00