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| author | Petr Hosek <phosek@google.com> | 2019-07-01 17:32:43 -0700 |
|---|---|---|
| committer | Petr Hosek <phosek@google.com> | 2019-07-02 16:18:06 -0700 |
| commit | 8d2f80bab308b7abe62fc6d817f12f21e66bfa53 (patch) | |
| tree | 08b3bdbdc609de4f321bcad87c1c80975969c83e /src/libunwind/libunwind.rs | |
| parent | 17e62f77f954bed97aae839624bfd6dd68342daf (diff) | |
Use link attributes on extern "C" blocks with llvm-libuwind
When llvm-libunwind feature is enabled, we need to use link attribute on extern "C" blocks to make sure that symbols provided by LLVM's libunwind that's built as part of Rust's libunwind crate are re-exported. This addresses issue #62088.
Diffstat (limited to 'src/libunwind/libunwind.rs')
| -rw-r--r-- | src/libunwind/libunwind.rs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/libunwind/libunwind.rs b/src/libunwind/libunwind.rs index 5794e0b7683..7e640897af7 100644 --- a/src/libunwind/libunwind.rs +++ b/src/libunwind/libunwind.rs @@ -67,6 +67,8 @@ pub enum _Unwind_Context {} pub type _Unwind_Exception_Cleanup_Fn = extern "C" fn(unwind_code: _Unwind_Reason_Code, exception: *mut _Unwind_Exception); +#[cfg_attr(all(not(bootstrap), feature = "llvm-libunwind"), + link(name = "unwind", kind = "static"))] extern "C" { #[unwind(allowed)] pub fn _Unwind_Resume(exception: *mut _Unwind_Exception) -> !; @@ -91,6 +93,8 @@ if #[cfg(all(any(target_os = "ios", target_os = "netbsd", not(target_arch = "arm } pub use _Unwind_Action::*; + #[cfg_attr(all(not(bootstrap), feature = "llvm-libunwind"), + link(name = "unwind", kind = "static"))] extern "C" { pub fn _Unwind_GetGR(ctx: *mut _Unwind_Context, reg_index: c_int) -> _Unwind_Word; pub fn _Unwind_SetGR(ctx: *mut _Unwind_Context, reg_index: c_int, value: _Unwind_Word); @@ -144,6 +148,8 @@ if #[cfg(all(any(target_os = "ios", target_os = "netbsd", not(target_arch = "arm pub const UNWIND_POINTER_REG: c_int = 12; pub const UNWIND_IP_REG: c_int = 15; + #[cfg_attr(all(not(bootstrap), feature = "llvm-libunwind"), + link(name = "unwind", kind = "static"))] extern "C" { fn _Unwind_VRS_Get(ctx: *mut _Unwind_Context, regclass: _Unwind_VRS_RegClass, @@ -206,6 +212,8 @@ if #[cfg(all(any(target_os = "ios", target_os = "netbsd", not(target_arch = "arm cfg_if::cfg_if! { if #[cfg(not(all(target_os = "ios", target_arch = "arm")))] { // Not 32-bit iOS + #[cfg_attr(all(not(bootstrap), feature = "llvm-libunwind"), + link(name = "unwind", kind = "static"))] extern "C" { #[unwind(allowed)] pub fn _Unwind_RaiseException(exception: *mut _Unwind_Exception) -> _Unwind_Reason_Code; @@ -215,6 +223,8 @@ if #[cfg(not(all(target_os = "ios", target_arch = "arm")))] { } } else { // 32-bit iOS uses SjLj and does not provide _Unwind_Backtrace() + #[cfg_attr(all(not(bootstrap), feature = "llvm-libunwind"), + link(name = "unwind", kind = "static"))] extern "C" { #[unwind(allowed)] pub fn _Unwind_SjLj_RaiseException(e: *mut _Unwind_Exception) -> _Unwind_Reason_Code; |