On Sun, Jan 19, 2025 at 12:17 PM Torbjörn SVENSSON
<torbjorn.svens...@foss.st.com> wrote:
>
> Ok for trunk?
>
> --
>
> Most baremetal toolchains will not have an implementation for alarm and
> sigaction as they are target specific.
> For arm-none-eabi with newlib, function signatures are exposed, but
> there is no implmentation and thus the test cases causes a undefined
> symbol link error.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.dg/pr78185.c: Remove dg-do and replace with
> with dg-require-effective-target of signal and alarm.
> * gcc.dg/pr116906-1.c: Likewise.
> * gcc.dg/pr116906-1.c: Likewise.
> * gcc.dg/vect/pr101145inf.c: Use effective-target alarm.
> * gcc.dg/vect/pr101145inf_1.c: Likewise.
> * lib/target-supports.exp(check_effective_target_alarm): New.
>
> gcc/ChangeLog:
>
> * doc/sourcebuild.texi (Effective-Target Keywords): Document
> 'alarm'.
>
> Signed-off-by: Torbjörn SVENSSON <torbjorn.svens...@foss.st.com>
> ---
> gcc/doc/sourcebuild.texi | 3 +++
> gcc/testsuite/gcc.dg/pr116906-1.c | 3 ++-
> gcc/testsuite/gcc.dg/pr116906-2.c | 3 ++-
> gcc/testsuite/gcc.dg/pr78185.c | 3 ++-
> gcc/testsuite/gcc.dg/vect/pr101145inf.c | 1 +
> gcc/testsuite/gcc.dg/vect/pr101145inf_1.c | 1 +
> gcc/testsuite/lib/target-supports.exp | 23 +++++++++++++++++++++++
> 7 files changed, 34 insertions(+), 3 deletions(-)
>
> diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi
> index b5c1b23e527..98ede70f23c 100644
> --- a/gcc/doc/sourcebuild.texi
> +++ b/gcc/doc/sourcebuild.texi
> @@ -2808,6 +2808,9 @@ both scalar and vector modes.
> @subsubsection Environment attributes
>
> @table @code
> +@item alarm
> +Target supports @code{alarm}.
> +
> @item c
> The language for the compiler under test is C.
>
> diff --git a/gcc/testsuite/gcc.dg/pr116906-1.c
> b/gcc/testsuite/gcc.dg/pr116906-1.c
> index 27b1fdae02b..7187507a60d 100644
> --- a/gcc/testsuite/gcc.dg/pr116906-1.c
> +++ b/gcc/testsuite/gcc.dg/pr116906-1.c
> @@ -1,4 +1,5 @@
> -/* { dg-do run { target *-*-linux* *-*-gnu* *-*-uclinux* } } */
> +/* { dg-require-effective-target alarm } */
> +/* { dg-require-effective-target signal } */
> /* { dg-options "-O2" } */
>
> #include <stdint.h>
> diff --git a/gcc/testsuite/gcc.dg/pr116906-2.c
> b/gcc/testsuite/gcc.dg/pr116906-2.c
> index 3478771678c..41a352bf837 100644
> --- a/gcc/testsuite/gcc.dg/pr116906-2.c
> +++ b/gcc/testsuite/gcc.dg/pr116906-2.c
> @@ -1,4 +1,5 @@
> -/* { dg-do run { target *-*-linux* *-*-gnu* *-*-uclinux* } } */
> +/* { dg-require-effective-target alarm } */
> +/* { dg-require-effective-target signal } */
> /* { dg-options "-O2 -fno-tree-ch" } */
>
> #include <unistd.h>
> diff --git a/gcc/testsuite/gcc.dg/pr78185.c b/gcc/testsuite/gcc.dg/pr78185.c
> index d7781b2080f..ada8b1b9f90 100644
> --- a/gcc/testsuite/gcc.dg/pr78185.c
> +++ b/gcc/testsuite/gcc.dg/pr78185.c
> @@ -1,4 +1,5 @@
> -/* { dg-do run { target *-*-linux* *-*-gnu* *-*-uclinux* } } */
> +/* { dg-require-effective-target alarm } */
> +/* { dg-require-effective-target signal } */
> /* { dg-options "-O" } */
>
> #include <unistd.h>
> diff --git a/gcc/testsuite/gcc.dg/vect/pr101145inf.c
> b/gcc/testsuite/gcc.dg/vect/pr101145inf.c
> index aa598875aa5..70aea94b6e0 100644
> --- a/gcc/testsuite/gcc.dg/vect/pr101145inf.c
> +++ b/gcc/testsuite/gcc.dg/vect/pr101145inf.c
> @@ -1,3 +1,4 @@
> +/* { dg-require-effective-target alarm } */
> /* { dg-require-effective-target signal } */
> /* { dg-additional-options "-O3" } */
> #include <limits.h>
> diff --git a/gcc/testsuite/gcc.dg/vect/pr101145inf_1.c
> b/gcc/testsuite/gcc.dg/vect/pr101145inf_1.c
> index 0465788c3cc..fe008284e1d 100644
> --- a/gcc/testsuite/gcc.dg/vect/pr101145inf_1.c
> +++ b/gcc/testsuite/gcc.dg/vect/pr101145inf_1.c
> @@ -1,3 +1,4 @@
> +/* { dg-require-effective-target alarm } */
> /* { dg-require-effective-target signal } */
> /* { dg-additional-options "-O3" } */
> #include <limits.h>
> diff --git a/gcc/testsuite/lib/target-supports.exp
> b/gcc/testsuite/lib/target-supports.exp
> index 939ef3a4119..93795a7e27f 100644
> --- a/gcc/testsuite/lib/target-supports.exp
> +++ b/gcc/testsuite/lib/target-supports.exp
> @@ -14255,3 +14255,26 @@ proc add_options_for_nvptx_alloca_ptx { flags } {
>
> return $flags
> }
> +
> +# Return true if alarm is supported on the target.
> +
> +proc check_effective_target_alarm { } {
Maybe A small optimization is return false here if signal is not supported.
That is:
if ![check_effective_target_signal] {
return 0
}
Thanks,
Andrew
> + return [check_no_compiler_messages alarm executable {
> + #include <signal.h>
> + #include <stdlib.h>
> + #include <unistd.h>
> + void do_exit(int i) { exit (0); }
> + int main (void) {
> + struct sigaction s;
> + sigemptyset (&s.sa_mask);
> + s.sa_handler = exit;
> + s.sa_flags = 0;
> + sigaction (SIGALRM, &s, NULL);
> + alarm (1);
> +
> + /* Infinite loop to simulate work... */
> + while (1);
> + abort ();
> + }
> + }]
> +}
> --
> 2.25.1
>
