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[libc++][test] Improves suspurious clang diagnostics. #77234

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merged 1 commit into from Jan 7, 2024
Merged

[libc++][test] Improves suspurious clang diagnostics. #77234

merged 1 commit into from Jan 7, 2024

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@mordante mordante commented Jan 7, 2024

As suggested by @philnik777 this is a better fix than 02a33b7

Fixes: #77123

@mordante mordante requested a review from a team as a code owner January 7, 2024 11:09
@llvmbot llvmbot added the libc++ libc++ C++ Standard Library. Not GNU libstdc++. Not libc++abi. label Jan 7, 2024
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llvmbot commented Jan 7, 2024

@llvm/pr-subscribers-libcxx

Author: Mark de Wever (mordante)

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As suggested by @philnik777 this is a better fix than 02a33b7

Fixes: #77123

Full diff: https://github.com/llvm/llvm-project/pull/77234.diff

2 Files Affected:

  • (modified) libcxx/test/libcxx/utilities/expected/expected.expected/transform_error.mandates.verify.cpp (+11-16)
  • (modified) libcxx/test/libcxx/utilities/expected/expected.void/transform_error.mandates.verify.cpp (+11-16)
diff --git a/libcxx/test/libcxx/utilities/expected/expected.expected/transform_error.mandates.verify.cpp b/libcxx/test/libcxx/utilities/expected/expected.expected/transform_error.mandates.verify.cpp
index 318435660c3652..46027fb4629515 100644
--- a/libcxx/test/libcxx/utilities/expected/expected.expected/transform_error.mandates.verify.cpp
+++ b/libcxx/test/libcxx/utilities/expected/expected.expected/transform_error.mandates.verify.cpp
@@ -6,14 +6,9 @@
 //
 //===----------------------------------------------------------------------===//
 
-// https://github.com/llvm/llvm-project/pull/76232 breaks this libc++ test.
-// The fix would be to update this file. The issue is that the CI uses 2
-// versions of Clang-18
-// - An older nightly build as the main compiler
-// - A freshly bootstrap build
-// This means the test can't be used until the nightly build is updated.
-// TODO(mordante) Reenable clang-18.
-// UNSUPPORTED: clang-18
+// Clang-18 fixed some suspurious clang diagnostics. Once clang-18 is the
+// minumum required version these obsolete tests can be removed.
+// TODO(LLVM-20) remove suspurious clang diagnostic tests.
 
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 
@@ -55,11 +50,11 @@ void test() {
   {
     std::expected<int, int> e;
     e.transform_error(return_unexpected<int&>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-1 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
     // expected-error-re@*:* {{static assertion failed {{.*}}[expected.object.general] A program that instantiates the definition of template expected<T, E> for {{.*}} is ill-formed.}}
 
     e.transform_error(return_no_object<int&>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-1 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
     // expected-error-re@*:* {{static assertion failed {{.*}}[expected.object.general] A program that instantiates the definition of template expected<T, E> for {{.*}} is ill-formed.}}
   }
 
@@ -67,27 +62,27 @@ void test() {
   {
     const std::expected<int, int> e;
     e.transform_error(return_unexpected<const int &>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* 2 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-2 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
     e.transform_error(return_no_object<const int &>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* 2 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-2 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
   }
 
   // Test && overload
   {
     std::expected<int, int> e;
     std::move(e).transform_error(return_unexpected<int&&>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* 2 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-2 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
     std::move(e).transform_error(return_no_object<int&&>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* 2 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-2 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
   }
 
   // Test const&& overload
   {
     const std::expected<int, int> e;
     std::move(e).transform_error(return_unexpected<const int&&>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* 2 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-2 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
     std::move(e).transform_error(return_no_object<const int&&>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* 2 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-2 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
   }
 }
 // clang-format on
diff --git a/libcxx/test/libcxx/utilities/expected/expected.void/transform_error.mandates.verify.cpp b/libcxx/test/libcxx/utilities/expected/expected.void/transform_error.mandates.verify.cpp
index d9f65e9f5919cd..cce59b99c55a04 100644
--- a/libcxx/test/libcxx/utilities/expected/expected.void/transform_error.mandates.verify.cpp
+++ b/libcxx/test/libcxx/utilities/expected/expected.void/transform_error.mandates.verify.cpp
@@ -6,14 +6,9 @@
 //
 //===----------------------------------------------------------------------===//
 
-// https://github.com/llvm/llvm-project/pull/76232 breaks this libc++ test.
-// The fix would be to update this file. The issue is that the CI uses 2
-// versions of Clang-18
-// - An older nightly build as the main compiler
-// - A freshly bootstrap build
-// This means the test can't be used until the nightly build is updated.
-// TODO(mordante) Reenable clang-18.
-// UNSUPPORTED: clang-18
+// Clang-18 fixed some suspurious clang diagnostics. Once clang-18 is the
+// minumum required version these obsolete tests can be removed.
+// TODO(LLVM-20) remove suspurious clang diagnostic tests.
 
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 
@@ -55,11 +50,11 @@ void test() {
   {
     std::expected<void, int> e;
     e.transform_error(return_unexpected<int&>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-1 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
     // expected-error-re@*:* {{static assertion failed {{.*}}A program that instantiates expected<T, E> with a E that is not a valid argument for unexpected<E> is ill-formed}}
 
     e.transform_error(return_no_object<int&>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-1 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
     // expected-error-re@*:* {{static assertion failed {{.*}}A program that instantiates expected<T, E> with a E that is not a valid argument for unexpected<E> is ill-formed}}
   }
 
@@ -67,27 +62,27 @@ void test() {
   {
     const std::expected<void, int> e;
     e.transform_error(return_unexpected<const int &>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-1 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
     e.transform_error(return_no_object<const int &>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-1 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
   }
 
   // Test && overload
   {
     std::expected<void, int> e;
     std::move(e).transform_error(return_unexpected<int&&>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-1 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
     std::move(e).transform_error(return_no_object<int&&>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-1 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
   }
 
   // Test const&& overload
   {
     const std::expected<void, int> e;
     std::move(e).transform_error(return_unexpected<const int&&>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-1 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
     std::move(e).transform_error(return_no_object<const int&&>); // expected-error-re@*:* {{static assertion failed {{.*}}The result of {{.*}} must be a valid template argument for unexpected}}
-    // expected-error-re@*:* {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
+    // expected-error-re@*:* 0-1 {{{{(excess elements in struct initializer|no matching constructor for initialization of)}}{{.*}}}}
   }
 }
 // clang-format on

@mordante mordante merged commit 1f9c2dd into llvm:main Jan 7, 2024
44 checks passed
@mordante mordante deleted the improve_verify_tests branch January 7, 2024 13:50
justinfargnoli pushed a commit to justinfargnoli/llvm-project that referenced this pull request Jan 28, 2024
@mordante @justinfargnoli
[libc++][test] Improves suspurious clang diagnostics. (llvm#77234)
ad0990c 
As suggested by @philnik777 this is a better fix than
02a33b7

Fixes: llvm#77123
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[libc++] Adjust tests for Clang-18
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