From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:13 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../min_const_generics/invalid-patterns.rs         | 47 ++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 tests/ui/const-generics/min_const_generics/invalid-patterns.rs

(limited to 'tests/ui/const-generics/min_const_generics/invalid-patterns.rs')

diff --git a/tests/ui/const-generics/min_const_generics/invalid-patterns.rs b/tests/ui/const-generics/min_const_generics/invalid-patterns.rs
new file mode 100644
index 000000000..13b2cca2f
--- /dev/null
+++ b/tests/ui/const-generics/min_const_generics/invalid-patterns.rs
@@ -0,0 +1,47 @@
+// stderr-per-bitwidth
+use std::mem::transmute;
+
+fn get_flag<const FlagSet: bool, const ShortName: char>() -> Option<char> {
+  if FlagSet {
+    Some(ShortName)
+  } else {
+    None
+  }
+}
+
+union CharRaw {
+  byte: u8,
+  character: char,
+}
+
+union BoolRaw {
+  byte: u8,
+  boolean: bool,
+}
+
+const char_raw: CharRaw = CharRaw { byte: 0xFF };
+const bool_raw: BoolRaw = BoolRaw { byte: 0x42 };
+
+fn main() {
+  // Test that basic cases don't work
+  assert!(get_flag::<true, 'c'>().is_some());
+  assert!(get_flag::<false, 'x'>().is_none());
+  get_flag::<false, 0xFF>();
+  //~^ ERROR mismatched types
+  get_flag::<7, 'c'>();
+  //~^ ERROR mismatched types
+  get_flag::<42, 0x5ad>();
+  //~^ ERROR mismatched types
+  //~| ERROR mismatched types
+
+
+  get_flag::<false, { unsafe { char_raw.character } }>();
+  //~^ ERROR evaluation of constant value failed
+  //~| uninitialized
+  get_flag::<{ unsafe { bool_raw.boolean } }, 'z'>();
+  //~^ ERROR it is undefined behavior
+  get_flag::<{ unsafe { bool_raw.boolean } }, { unsafe { char_raw.character } }>();
+  //~^ ERROR evaluation of constant value failed
+  //~| uninitialized
+  //~| ERROR it is undefined behavior
+}
-- 
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