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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:06:31 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:06:31 +0000
commit2ff14448863ac1a1dd9533461708e29aae170c2d (patch)
tree85b9fea2bbfe3f06473cfa381eed11f273b57c5c /library/std/src/personality/emcc.rs
parentAdding debian version 1.64.0+dfsg1-1. (diff)
downloadrustc-2ff14448863ac1a1dd9533461708e29aae170c2d.tar.xz
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Adding debian version 1.65.0+dfsg1-2.debian/1.65.0+dfsg1-2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'library/std/src/personality/emcc.rs')
-rw-r--r--library/std/src/personality/emcc.rs20
1 files changed, 20 insertions, 0 deletions
diff --git a/library/std/src/personality/emcc.rs b/library/std/src/personality/emcc.rs
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+++ b/library/std/src/personality/emcc.rs
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+//! On Emscripten Rust panics are wrapped in C++ exceptions, so we just forward
+//! to `__gxx_personality_v0` which is provided by Emscripten.
+
+use libc::c_int;
+use unwind as uw;
+
+// This is required by the compiler to exist (e.g., it's a lang item), but it's
+// never actually called by the compiler. Emscripten EH doesn't use a
+// personality function at all, it instead uses __cxa_find_matching_catch.
+// Wasm error handling would use __gxx_personality_wasm0.
+#[lang = "eh_personality"]
+unsafe extern "C" fn rust_eh_personality(
+ _version: c_int,
+ _actions: uw::_Unwind_Action,
+ _exception_class: uw::_Unwind_Exception_Class,
+ _exception_object: *mut uw::_Unwind_Exception,
+ _context: *mut uw::_Unwind_Context,
+) -> uw::_Unwind_Reason_Code {
+ core::intrinsics::abort()
+}