save-analysis: Add UI testsuite

Author: Xanewok

Diff for: src/test/ui/save-analysis/issue-59134-0.rs

@@ -0,0 +1,12 @@
+// compile-flags: -Zsave-analysis
+
+// Check that this doesn't ICE when processing associated const (field expr).
+
+pub fn f() {
+    trait Trait {}
+    impl Trait {
+        const FLAG: u32 = bogus.field; //~ ERROR cannot find value `bogus`
+    }
+}
+
+fn main() {}

Diff for: src/test/ui/save-analysis/issue-59134-0.stderr

@@ -0,0 +1,9 @@
+error[E0425]: cannot find value `bogus` in this scope
+  --> $DIR/issue-59134-0.rs:8:27
+   |
+LL |         const FLAG: u32 = bogus.field;
+   |                           ^^^^^ not found in this scope
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0425`.

Diff for: src/test/ui/save-analysis/issue-59134-1.rs

@@ -0,0 +1,12 @@
+// compile-flags: -Zsave-analysis
+
+// Check that this doesn't ICE when processing associated const (type).
+
+fn func() {
+    trait Trait {
+        type MyType;
+        const CONST: Self::MyType = bogus.field; //~ ERROR cannot find value `bogus`
+    }
+}
+
+fn main() {}

Diff for: src/test/ui/save-analysis/issue-59134-1.stderr

@@ -0,0 +1,9 @@
+error[E0425]: cannot find value `bogus` in this scope
+  --> $DIR/issue-59134-1.rs:8:37
+   |
+LL |         const CONST: Self::MyType = bogus.field;
+   |                                     ^^^^^ not found in this scope
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0425`.