From 817b0932fa66ee8fd6e695f9ec74804a6c360269 Mon Sep 17 00:00:00 2001
From: Gabriel Bjørnager Jensen <gabriel@achernar.io>
Date: Wed, 19 Feb 2025 10:36:21 +0100
Subject: Implement 'PartialEq<{&Self, CString, Cow<Self>}>' for 'CStr';
 Implement 'PartialEq<{CStr, &CStr, Cow<CStr>}>' for 'CString'; Implement
 'PartialEq<{CStr, &CStr, CString}>' for 'Cow<CStr>';

---
 library/alloc/src/ffi/c_str.rs | 109 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)

(limited to 'library/alloc/src')

diff --git a/library/alloc/src/ffi/c_str.rs b/library/alloc/src/ffi/c_str.rs
index fd93045a5ac..91cfb50c5e0 100644
--- a/library/alloc/src/ffi/c_str.rs
+++ b/library/alloc/src/ffi/c_str.rs
@@ -1095,6 +1095,46 @@ impl From<&CStr> for CString {
     }
 }
 
+#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+impl PartialEq<CStr> for CString {
+    #[inline]
+    fn eq(&self, other: &CStr) -> bool {
+        **self == *other
+    }
+
+    #[inline]
+    fn ne(&self, other: &CStr) -> bool {
+        **self != *other
+    }
+}
+
+#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+impl PartialEq<&CStr> for CString {
+    #[inline]
+    fn eq(&self, other: &&CStr) -> bool {
+        **self == **other
+    }
+
+    #[inline]
+    fn ne(&self, other: &&CStr) -> bool {
+        **self != **other
+    }
+}
+
+#[cfg(not(no_global_oom_handling))]
+#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+impl PartialEq<Cow<'_, CStr>> for CString {
+    #[inline]
+    fn eq(&self, other: &Cow<'_, CStr>) -> bool {
+        **self == **other
+    }
+
+    #[inline]
+    fn ne(&self, other: &Cow<'_, CStr>) -> bool {
+        **self != **other
+    }
+}
+
 #[stable(feature = "cstring_asref", since = "1.7.0")]
 impl ops::Index<ops::RangeFull> for CString {
     type Output = CStr;
@@ -1178,6 +1218,75 @@ impl CStr {
     }
 }
 
+#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+impl PartialEq<CString> for CStr {
+    #[inline]
+    fn eq(&self, other: &CString) -> bool {
+        *self == **other
+    }
+
+    #[inline]
+    fn ne(&self, other: &CString) -> bool {
+        *self != **other
+    }
+}
+
+#[cfg(not(no_global_oom_handling))]
+#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+impl PartialEq<Cow<'_, Self>> for CStr {
+    #[inline]
+    fn eq(&self, other: &Cow<'_, Self>) -> bool {
+        *self == **other
+    }
+
+    #[inline]
+    fn ne(&self, other: &Cow<'_, Self>) -> bool {
+        *self != **other
+    }
+}
+
+#[cfg(not(no_global_oom_handling))]
+#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+impl PartialEq<CStr> for Cow<'_, CStr> {
+    #[inline]
+    fn eq(&self, other: &CStr) -> bool {
+        **self == *other
+    }
+
+    #[inline]
+    fn ne(&self, other: &CStr) -> bool {
+        **self != *other
+    }
+}
+
+#[cfg(not(no_global_oom_handling))]
+#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+impl PartialEq<&CStr> for Cow<'_, CStr> {
+    #[inline]
+    fn eq(&self, other: &&CStr) -> bool {
+        **self == **other
+    }
+
+    #[inline]
+    fn ne(&self, other: &&CStr) -> bool {
+        **self != **other
+    }
+}
+
+#[cfg(not(no_global_oom_handling))]
+#[stable(feature = "c_string_eq_c_str", since = "CURRENT_RUSTC_VERSION")]
+impl PartialEq<CString> for Cow<'_, CStr> {
+    #[inline]
+    fn eq(&self, other: &CString) -> bool {
+        **self == **other
+    }
+
+    #[inline]
+    fn ne(&self, other: &CString) -> bool {
+        **self != **other
+    }
+}
+
 #[stable(feature = "rust1", since = "1.0.0")]
 impl core::error::Error for NulError {
     #[allow(deprecated)]
-- 
cgit 1.4.1-3-g733a5