diff mbox series

libcpp: testsuite: Add test for fixed _Pragma bug [PR82335]

Message ID 20231002222344.2714786-1-lhyatt@gmail.com
State New
Headers show
Series libcpp: testsuite: Add test for fixed _Pragma bug [PR82335] | expand

Commit Message

Lewis Hyatt Oct. 2, 2023, 10:23 p.m. UTC 
Hello-

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82335 is another
_Pragma-related bug that got fixed in GCC 12 but is still open. Before
closing it out, I thought it would be good to add the testcase from that
PR, which we don't have exactly in the testsuite already. Is it OK please?
Thanks!

-Lewis

-- >8 --

This PR was fixed by r12-4797 and r12-5454. Add test coverage from the PR
that is not represented elsewhere.

gcc/testsuite/ChangeLog:

	PR preprocessor/82335
	* c-c++-common/cpp/diagnostic-pragma-3.c: New test.
---
 .../c-c++-common/cpp/diagnostic-pragma-3.c    | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c

Comments

Lewis Hyatt Oct. 18, 2023, 9:03 p.m. UTC | #1 
May I please ping this one, and/or, is it something straightforward
enough I can just commit it as obvious? Thanks!
https://gcc.gnu.org/pipermail/gcc-patches/2023-October/631814.html

-Lewis

On Mon, Oct 2, 2023 at 6:23 PM Lewis Hyatt <lhyatt@gmail.com> wrote:
>
> Hello-
>
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82335 is another
> _Pragma-related bug that got fixed in GCC 12 but is still open. Before
> closing it out, I thought it would be good to add the testcase from that
> PR, which we don't have exactly in the testsuite already. Is it OK please?
> Thanks!
>
> -Lewis
>
> -- >8 --
>
> This PR was fixed by r12-4797 and r12-5454. Add test coverage from the PR
> that is not represented elsewhere.
>
> gcc/testsuite/ChangeLog:
>
>         PR preprocessor/82335
>         * c-c++-common/cpp/diagnostic-pragma-3.c: New test.
> ---
>  .../c-c++-common/cpp/diagnostic-pragma-3.c    | 37 +++++++++++++++++++
>  1 file changed, 37 insertions(+)
>  create mode 100644 gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c
>
> diff --git a/gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c b/gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c
> new file mode 100644
> index 00000000000..459dcec73b3
> --- /dev/null
> +++ b/gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c
> @@ -0,0 +1,37 @@
> +/* This is like diagnostic-pragma-2.c, but handles the case where everything
> +   is wrapped inside a macro, which previously caused additional issues tracked
> +   in PR preprocessor/82335.  */
> +
> +/* { dg-do compile } */
> +/* { dg-additional-options "-save-temps -Wattributes -Wtype-limits" } */
> +
> +#define B _Pragma("GCC diagnostic push") \
> +          _Pragma("GCC diagnostic ignored \"-Wattributes\"")
> +#define E _Pragma("GCC diagnostic pop")
> +
> +#define X() B int __attribute((unknown_attr)) x; E
> +#define Y   B int __attribute((unknown_attr)) y; E
> +#define WRAP(x) x
> +
> +void test1(void)
> +{
> +  WRAP(X())
> +  WRAP(Y)
> +}
> +
> +/* Additional test provided on the PR.  */
> +#define PRAGMA(...) _Pragma(#__VA_ARGS__)
> +#define PUSH_IGN(X) PRAGMA(GCC diagnostic push) PRAGMA(GCC diagnostic ignored X)
> +#define POP() PRAGMA(GCC diagnostic pop)
> +#define TEST(X, Y) \
> +  PUSH_IGN("-Wtype-limits") \
> +  int Y = (__typeof(X))-1 < 0; \
> +  POP()
> +
> +int test2()
> +{
> +  unsigned x;
> +  TEST(x, i1);
> +  WRAP(TEST(x, i2))
> +  return i1 + i2;
> +}
Marek Polacek Oct. 19, 2023, 12:09 p.m. UTC | #2 
On Wed, Oct 18, 2023 at 05:03:57PM -0400, Lewis Hyatt wrote:
> May I please ping this one, and/or, is it something straightforward
> enough I can just commit it as obvious? Thanks!
> https://gcc.gnu.org/pipermail/gcc-patches/2023-October/631814.html

Please go ahead and apply the patch, thanks.

Sorry about the wait.
 
> -Lewis
> 
> On Mon, Oct 2, 2023 at 6:23 PM Lewis Hyatt <lhyatt@gmail.com> wrote:
> >
> > Hello-
> >
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82335 is another
> > _Pragma-related bug that got fixed in GCC 12 but is still open. Before
> > closing it out, I thought it would be good to add the testcase from that
> > PR, which we don't have exactly in the testsuite already. Is it OK please?
> > Thanks!
> >
> > -Lewis
> >
> > -- >8 --
> >
> > This PR was fixed by r12-4797 and r12-5454. Add test coverage from the PR
> > that is not represented elsewhere.
> >
> > gcc/testsuite/ChangeLog:
> >
> >         PR preprocessor/82335
> >         * c-c++-common/cpp/diagnostic-pragma-3.c: New test.
> > ---
> >  .../c-c++-common/cpp/diagnostic-pragma-3.c    | 37 +++++++++++++++++++
> >  1 file changed, 37 insertions(+)
> >  create mode 100644 gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c
> >
> > diff --git a/gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c b/gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c
> > new file mode 100644
> > index 00000000000..459dcec73b3
> > --- /dev/null
> > +++ b/gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c
> > @@ -0,0 +1,37 @@
> > +/* This is like diagnostic-pragma-2.c, but handles the case where everything
> > +   is wrapped inside a macro, which previously caused additional issues tracked
> > +   in PR preprocessor/82335.  */
> > +
> > +/* { dg-do compile } */
> > +/* { dg-additional-options "-save-temps -Wattributes -Wtype-limits" } */
> > +
> > +#define B _Pragma("GCC diagnostic push") \
> > +          _Pragma("GCC diagnostic ignored \"-Wattributes\"")
> > +#define E _Pragma("GCC diagnostic pop")
> > +
> > +#define X() B int __attribute((unknown_attr)) x; E
> > +#define Y   B int __attribute((unknown_attr)) y; E
> > +#define WRAP(x) x
> > +
> > +void test1(void)
> > +{
> > +  WRAP(X())
> > +  WRAP(Y)
> > +}
> > +
> > +/* Additional test provided on the PR.  */
> > +#define PRAGMA(...) _Pragma(#__VA_ARGS__)
> > +#define PUSH_IGN(X) PRAGMA(GCC diagnostic push) PRAGMA(GCC diagnostic ignored X)
> > +#define POP() PRAGMA(GCC diagnostic pop)
> > +#define TEST(X, Y) \
> > +  PUSH_IGN("-Wtype-limits") \
> > +  int Y = (__typeof(X))-1 < 0; \
> > +  POP()
> > +
> > +int test2()
> > +{
> > +  unsigned x;
> > +  TEST(x, i1);
> > +  WRAP(TEST(x, i2))
> > +  return i1 + i2;
> > +}
> 

Marek
diff mbox series

Patch

diff --git a/gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c b/gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c
new file mode 100644
index 00000000000..459dcec73b3
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c
@@ -0,0 +1,37 @@ 
+/* This is like diagnostic-pragma-2.c, but handles the case where everything
+   is wrapped inside a macro, which previously caused additional issues tracked
+   in PR preprocessor/82335.  */
+
+/* { dg-do compile } */
+/* { dg-additional-options "-save-temps -Wattributes -Wtype-limits" } */
+
+#define B _Pragma("GCC diagnostic push") \
+          _Pragma("GCC diagnostic ignored \"-Wattributes\"")
+#define E _Pragma("GCC diagnostic pop")
+
+#define X() B int __attribute((unknown_attr)) x; E
+#define Y   B int __attribute((unknown_attr)) y; E
+#define WRAP(x) x
+
+void test1(void)
+{
+  WRAP(X())
+  WRAP(Y)
+}
+
+/* Additional test provided on the PR.  */
+#define PRAGMA(...) _Pragma(#__VA_ARGS__)
+#define PUSH_IGN(X) PRAGMA(GCC diagnostic push) PRAGMA(GCC diagnostic ignored X)
+#define POP() PRAGMA(GCC diagnostic pop)
+#define TEST(X, Y) \
+  PUSH_IGN("-Wtype-limits") \
+  int Y = (__typeof(X))-1 < 0; \
+  POP()
+
+int test2()
+{
+  unsigned x;
+  TEST(x, i1);
+  WRAP(TEST(x, i2))
+  return i1 + i2;
+}