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| author | Jakub Jelinek <jakub@redhat.com> | 2022-08-24 09:55:57 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2022-08-24 09:55:57 +0200 |
| commit | 365202625d2f2d6694dba889ca67498fefb59c68 (patch) | |
| tree | 0eb106ecafdb17bdb057a8efc837647c5598fe8b /gcc | |
| parent | 42301c02e458cdce646ffaf7ea1df502ab2e8ddc (diff) | |
| download | gcc-365202625d2f2d6694dba889ca67498fefb59c68.zip gcc-365202625d2f2d6694dba889ca67498fefb59c68.tar.gz gcc-365202625d2f2d6694dba889ca67498fefb59c68.tar.bz2 | |
preprocessor: Implement C++23 P2437R1 - Support for #warning [PR106646]
On Thu, Aug 18, 2022 at 11:02:44PM +0000, Joseph Myers wrote:
> ISO C2x standardizes the existing #warning extension. Arrange
> accordingly for it not to be diagnosed with -std=c2x -pedantic, but to
> be diagnosed with -Wc11-c2x-compat.
And here is the corresponding C++ version.
Don't pedwarn about this for C++23/GNU++23 and tweak the diagnostics
for C++ otherwise, + testsuite coverage.
The diagnostic wording is similar e.g. to the #elifdef diagnostics.
2022-08-24 Jakub Jelinek <jakub@redhat.com>
PR c++/106646
* init.cc: Implement C++23 P2437R1 - Support for #warning.
(lang_defaults): Set warning_directive for GNUCXX23 and CXX23.
* directives.cc (directive_diagnostics): Use different wording of
#warning pedwarn for C++.
* g++.dg/cpp/warning-1.C: New test.
* g++.dg/cpp/warning-2.C: New test.
* g++.dg/cpp/warning-3.C: New test.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/testsuite/g++.dg/cpp/warning-1.C | 6 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/cpp/warning-2.C | 6 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/cpp/warning-3.C | 6 |
3 files changed, 18 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/cpp/warning-1.C b/gcc/testsuite/g++.dg/cpp/warning-1.C new file mode 100644 index 0000000..2d857cf --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp/warning-1.C @@ -0,0 +1,6 @@ +// P2437R1 - Support for #warning +// { dg-do preprocess } +// { dg-options "-pedantic-errors" } + +#warning example text /* { dg-warning "example text" } */ +// { dg-error "#warning before C\\\+\\\+23 is a GCC extension" "pedantic" { target c++20_down } .-1 } diff --git a/gcc/testsuite/g++.dg/cpp/warning-2.C b/gcc/testsuite/g++.dg/cpp/warning-2.C new file mode 100644 index 0000000..d6d5d9f --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp/warning-2.C @@ -0,0 +1,6 @@ +// P2437R1 - Support for #warning +// { dg-do preprocess } +// { dg-options "-pedantic" } + +#warning example text /* { dg-warning "example text" } */ +// { dg-warning "#warning before C\\\+\\\+23 is a GCC extension" "pedantic" { target c++20_down } .-1 } diff --git a/gcc/testsuite/g++.dg/cpp/warning-3.C b/gcc/testsuite/g++.dg/cpp/warning-3.C new file mode 100644 index 0000000..1595b4d --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp/warning-3.C @@ -0,0 +1,6 @@ +// P2437R1 - Support for #warning +// { dg-do preprocess } +// { dg-options "" } + +#warning example text /* { dg-warning "example text" } */ +// { dg-bogus "#warning before C\\\+\\\+23 is a GCC extension" "" { target *-*-* } .-1 } |