19 Commits

Author SHA1 Message Date
cor3ntin
d773c00e52
[Clang] Fix looking for immediate calls in default arguments. (#80690)
Due to improper use of RecursiveASTVisitor.

Fixes #80630
2024-03-05 10:04:45 +01:00
Corentin Jabot
8698262a43 [Clang] Fix consteval propagation for aggregates and defaulted constructors
This patch does a few things:

* Fix aggregate initialization.
  When an aggregate has an initializer that is immediate-escalating,
  the context in which it is used automatically becomes an immediate function.
  The wording does that by rpretending an aggregate initialization is itself
  an invocation which is not really how clang works, so my previous attempt
  was... wrong.

* Fix initialization of defaulted constructors with immediate escalating
  default member initializers.
  The wording was silent about that case and I did not handled it fully
  https://cplusplus.github.io/CWG/issues/2760.html

* Fix diagnostics
  In some cases clang would produce additional and unhelpful
  diagnostics by listing the invalid references to consteval
  function that appear in immediate escalating functions

Fixes https://github.com/llvm/llvm-project/issues/63742

Reviewed By: aaron.ballman, #clang-language-wg, Fznamznon

Differential Revision: https://reviews.llvm.org/D155175
2023-07-24 18:15:38 +02:00
Corentin Jabot
5f038e0e20 [Clang][NFC] Fix "initalizer" typo 2023-07-10 09:06:19 +02:00
Corentin Jabot
4676885270 [clang] Implement P2564 "consteval must propagate up"
Reviewed By: aaron.ballman, #clang-language-wg

Differential Revision: https://reviews.llvm.org/D151094
2023-06-07 20:45:36 +02:00
Mariya Podchishchaeva
74fd474eea [clang] Evaluate non-type default template argument when it is required
Before this change a default template argument for a non-type template
parameter was evaluated and checked immediately after it is met by
parser. In some cases it is too early.

Fixes https://github.com/llvm/llvm-project/issues/62224
Fixes https://github.com/llvm/llvm-project/issues/62596

Reviewed By: shafik, erichkeane, cor3ntin

Differential Revision: https://reviews.llvm.org/D150108
2023-05-09 04:21:46 -04:00
Mark de Wever
ba15d186e5 [clang] Use -std=c++23 instead of -std=c++2b
During the ISO C++ Committee meeting plenary session the C++23 Standard
has been voted as technical complete.

This updates the reference to c++2b to c++23 and updates the __cplusplus
macro.

Drive-by fixes c++1z -> c++17 and c++2a -> c++20 when seen.

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D149553
2023-05-04 19:19:52 +02:00
Corentin Jabot
ca61961380 Implement CWG2631
Implement https://cplusplus.github.io/CWG/issues/2631.html.

Immediate calls in default arguments and defaults members
are not evaluated.

Instead, we evaluate them when constructing a
`CXXDefaultArgExpr`/`BuildCXXDefaultInitExpr`.

The immediate calls are executed by doing a
transform on the initializing expression.

Note that lambdas are not considering subexpressions so
we do not need to transform them.

As a result of this patch, unused default member
initializers are not considered odr-used, and
errors about members binding to local variables
in an outer scope only surface at the point
where a constructor is defined.

Reviewed By: aaron.ballman, #clang-language-wg, rupprecht

Differential Revision: https://reviews.llvm.org/D136554
2023-01-08 10:35:26 +01:00
Krasimir Georgiev
339a7687e1 Revert "Implement CWG2631"
This reverts commit f1f1b60c7ba607e9ffe3bc012161d43ef95ac773.

Temporary revert, possibly triggers a new assertion failure on
QualType::getCommonPtr.
We're working on a reproducer, to follow-up on
https://reviews.llvm.org/D136554.
2022-12-14 09:10:22 +00:00
Corentin Jabot
f1f1b60c7b Implement CWG2631
Implement https://cplusplus.github.io/CWG/issues/2631.html.

Immediate calls in default arguments and defaults members
are not evaluated.

Instead, we evaluate them when constructing a
`CXXDefaultArgExpr`/`BuildCXXDefaultInitExpr`.

The immediate calls are executed by doing a
transform on the initializing expression.

Note that lambdas are not considering subexpressions so
we do not need to transform them.

As a result of this patch, unused default member
initializers are not considered odr-used, and
errors about members binding to local variables
in an outer scope only surface at the point
where a constructor is defined.

Reviewed By: aaron.ballman, #clang-language-wg

Differential Revision: https://reviews.llvm.org/D136554
2022-12-13 09:57:05 +01:00
Arthur Eubanks
be305674bf Revert "Implement CWG2631"
This reverts commit c9a6713b4788f10b81202b70993068e475b392f7.

Causes crashes, see D136554.
2022-12-09 14:20:30 -08:00
Corentin Jabot
c9a6713b47 Implement CWG2631
Implement https://cplusplus.github.io/CWG/issues/2631.html.

Immediate calls in default arguments and defaults members
are not evaluated.

Instead, we evaluate them when constructing a
`CXXDefaultArgExpr`/`BuildCXXDefaultInitExpr`.

The immediate calls are executed by doing a
transform on the initializing expression.

Note that lambdas are not considering subexpressions so
we do not need to transform them.

As a result of this patch, unused default member
initializers are not considered odr-used, and
errors about members binding to local variables
in an outer scope only surface at the point
where a constructor is defined.

Reviewed By: aaron.ballman, #clang-language-wg

Differential Revision: https://reviews.llvm.org/D136554
2022-12-09 10:25:44 +01:00
Corentin Jabot
49c86eab62 Revert "Implement CWG2631"
This patch causes another link error,
reverting until I can investigate.

This reverts commit a96a6ed83230265f3eab09a94f0e9525d05f8a74.
2022-12-08 19:57:58 +01:00
Corentin Jabot
a96a6ed832 Implement CWG2631
Implement https://cplusplus.github.io/CWG/issues/2631.html.

Immediate calls in default arguments and defaults members
are not evaluated.

Instead, we evaluate them when constructing a
`CXXDefaultArgExpr`/`BuildCXXDefaultInitExpr`.

The immediate calls are executed by doing a
transform on the initializing expression.

Note that lambdas are not considering subexpressions so
we do not need to transform them.

As a result of this patch, unused default member
initializers are not considered odr-used, and
errors about members binding to local variables
in an outer scope only surface at the point
where a constructor is defined.

Reviewed By: aaron.ballman, #clang-language-wg

Differential Revision: https://reviews.llvm.org/D136554
2022-12-08 10:32:54 +01:00
Corentin Jabot
9221bedfd7 Revert "Implement CWG2631"
This reverts commit 26fa17ed2914bd80c066d36b325fd3104e45554c.
This reverts commit 4403c4f9e77e673a2771edfc7ab0ebb234e97485.

There is still an ODR issue causing linker errors, investigating.
2022-11-30 16:03:05 +01:00
Corentin Jabot
26fa17ed29 Implement CWG2631
Implement https://cplusplus.github.io/CWG/issues/2631.html.

Immediate calls in default arguments and defaults members
are not evaluated.

Instead, we evaluate them when constructing a
`CXXDefaultArgExpr`/`BuildCXXDefaultInitExpr`.

The immediate calls are executed by doing a
transform on the initializing expression.

Note that lambdas are not considering subexpressions so
we do not need to transform them.

As a result of this patch, unused default member
initializers are not considered odr-used, and
errors about members binding to local variables
in an outer scope only surface at the point
where a constructor is defined.

Reviewed By: aaron.ballman, #clang-language-wg

Differential Revision: https://reviews.llvm.org/D136554
2022-11-30 11:25:01 +01:00
Corentin Jabot
35a870c30a Revert "Implement CWG2631"
This reverts commit 7acfe3629479c8489fc2d7f629994dc200be990c.
This reverts commit 5f87a892a7bed9cb0599573b9aaf387bc1df9c14.
This reverts commit 6875ac69279a3a02fab382a2c8d121558ecbfa91.
2022-11-04 22:10:50 +01:00
Corentin Jabot
7acfe36294 Implement CWG2631
Implement https://cplusplus.github.io/CWG/issues/2631.html.

Immediate calls in default arguments and defaults members
are not evaluated.

Instead, we evaluate them when constructing a
`CXXDefaultArgExpr`/`BuildCXXDefaultInitExpr`.

The immediate calls are executed by doing a
transform on the initializing expression.

Note that lambdas are not considering subexpressions so
we do not need to transform them.

As a result of this patch, unused default member
initializers are not considered odr-used, and
errors about members binding to local variables
in an outer scope only surface at the point
where a constructor is defined.

Reviewed By: aaron.ballman, #clang-language-wg

Differential Revision: https://reviews.llvm.org/D136554
2022-11-04 14:46:38 +01:00
Corentin Jabot
722a0efe31 Revert "Implement CWG2631"
Breaks the build on some platforms.

This reverts commit bf1e235695a7acdc3e868217e69d5b31ada06cb3.
2022-11-04 08:24:52 +01:00
Corentin Jabot
bf1e235695 Implement CWG2631
Implement https://cplusplus.github.io/CWG/issues/2631.html.

Immediate calls in default arguments and defaults members
are not evaluated.

Instead, we evaluate them when constructing a
`CXXDefaultArgExpr`/`BuildCXXDefaultInitExpr`.

The immediate calls are executed by doing a
transform on the initializing expression.

Note that lambdas are not considering subexpressions so
we do not need to transform them.

As a result of this patch, unused default member
initializers are not considered odr-used, and
errors about members binding to local variables
in an outer scope only surface at the point
where a constructor is defined.

Reviewed By: aaron.ballman, #clang-language-wg

Differential Revision: https://reviews.llvm.org/D136554
2022-11-04 07:58:57 +01:00