Rename -Zoom=panic to -Zoom=unwind

Author: Amanieu

compiler/rustc_interface/src/tests.rs

@@ -776,7 +776,7 @@ fn test_unstable_options_tracking_hash() {
     tracked!(no_link, true);
     tracked!(no_profiler_runtime, true);
     tracked!(no_unique_section_names, true);
-    tracked!(oom, OomStrategy::Panic);
+    tracked!(oom, OomStrategy::Unwind);
     tracked!(osx_rpath_install_name, true);
     tracked!(packed_bundled_libs, true);
     tracked!(panic_abort_tests, true);

compiler/rustc_session/src/config.rs

@@ -3048,9 +3048,9 @@ pub(crate) mod dep_tracking {
 #[derive(Clone, Copy, PartialEq, Hash, Debug, Encodable, Decodable, HashStable_Generic)]
 pub enum OomStrategy {
     /// Generate a panic that can be caught by `catch_unwind`.
-    Panic,
+    Unwind,
 
-    /// Abort the process immediately.
+    /// Calls the panic hook as normal but aborts instead of unwinding.
     Abort,
 }
 
@@ -3059,7 +3059,7 @@ impl OomStrategy {
 
     pub fn should_panic(self) -> u8 {
         match self {
-            OomStrategy::Panic => 1,
+            OomStrategy::Unwind => 1,
             OomStrategy::Abort => 0,
         }
     }

compiler/rustc_session/src/options.rs

@@ -662,7 +662,7 @@ mod parse {
 
     pub(crate) fn parse_oom_strategy(slot: &mut OomStrategy, v: Option<&str>) -> bool {
         match v {
-            Some("panic") => *slot = OomStrategy::Panic,
+            Some("unwind") => *slot = OomStrategy::Unwind,
             Some("abort") => *slot = OomStrategy::Abort,
             _ => return false,
         }

library/alloc/src/alloc.rs

@@ -398,7 +398,7 @@ fn rust_oom(layout: Layout) -> ! {
         fn panic_impl(pi: &core::panic::PanicInfo<'_>) -> !;
 
         // This symbol is emitted by rustc .
-        // Its value depends on the -Zoom={panic,abort} compiler option.
+        // Its value depends on the -Zoom={unwind,abort} compiler option.
         static __rust_alloc_error_handler_should_panic: u8;
     }
 
@@ -458,7 +458,7 @@ pub mod __alloc_error_handler {
     pub unsafe fn __rdl_oom(size: usize, _align: usize) -> ! {
         extern "Rust" {
             // This symbol is emitted by rustc next to __rust_alloc_error_handler.
-            // Its value depends on the -Zoom={panic,abort} compiler option.
+            // Its value depends on the -Zoom={unwind,abort} compiler option.
             static __rust_alloc_error_handler_should_panic: u8;
         }
 

tests/ui/oom_unwind.rs

@@ -1,4 +1,4 @@
-// compile-flags: -Z oom=panic
+// compile-flags: -Z oom=unwind
 // run-pass
 // no-prefer-dynamic
 // needs-unwind