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| author | Jakub Jelinek <jakub@redhat.com> | 2025-08-06 10:44:09 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2025-08-06 10:44:09 +0200 |
| commit | 43472f2cc0ef6c702c649947d379f334a4262596 (patch) | |
| tree | 8d12614d087b0096b817ddc03a94f5194d62b498 | |
| parent | f1ab4c518c72d7981edf910b1bd4ccf7970e08bb (diff) | |
| download | gcc-43472f2cc0ef6c702c649947d379f334a4262596.zip gcc-43472f2cc0ef6c702c649947d379f334a4262596.tar.gz gcc-43472f2cc0ef6c702c649947d379f334a4262596.tar.bz2 | |
c++: Add test for vt/ff in line comments
P2843R3 dropped the
"If there is a form-feed or a vertical-tab character in such a comment, only
whitespace characters shall appear between it and the new-line that terminates
the comment; no diagnostic is required."
sentence from [lex.comment]. AFAIK we've never diagnosed nor checked for
that and C23 doesn't have anything like that, so the following testcase
merely tests that we don't diagnose anything on it.
2025-08-06 Jakub Jelinek <jakub@redhat.com>
PR preprocessor/120778
* c-c++-common/cpp/comment-ff-1.c: New test.
* c-c++-common/cpp/comment-vtab-1.c: New test.
| -rw-r--r-- | gcc/testsuite/c-c++-common/cpp/comment-ff-1.c | 12 | ||||
| -rw-r--r-- | gcc/testsuite/c-c++-common/cpp/comment-vtab-1.c | 12 |
2 files changed, 24 insertions, 0 deletions
diff --git a/gcc/testsuite/c-c++-common/cpp/comment-ff-1.c b/gcc/testsuite/c-c++-common/cpp/comment-ff-1.c new file mode 100644 index 0000000..0d071b1 --- /dev/null +++ b/gcc/testsuite/c-c++-common/cpp/comment-ff-1.c @@ -0,0 +1,12 @@ +// C++26 P2843R3 - Preprocessing is never undefined +// Test that form-feed followed by non-whitespace +// in line comments are accepted. +// { dg-do compile } +// { dg-options "-pedantic-errors -Wall -W" } + +// +int a; +// +int b; +// comment +int c; diff --git a/gcc/testsuite/c-c++-common/cpp/comment-vtab-1.c b/gcc/testsuite/c-c++-common/cpp/comment-vtab-1.c new file mode 100644 index 0000000..03feb73 --- /dev/null +++ b/gcc/testsuite/c-c++-common/cpp/comment-vtab-1.c @@ -0,0 +1,12 @@ +// C++26 P2843R3 - Preprocessing is never undefined +// Test that vertical tab followed by non-whitespace +// in line comments are accepted. +// { dg-do compile } +// { dg-options "-pedantic-errors -Wall -W" } + +// +int a; +// +int b; +// comment +int c; |