[gcc r17-803] ada: Fix build failure for Windows platforms

[Marc Poulhies via Gcc-cvs]

https://gcc.gnu.org/g:dbd2deefe760b711635de13b465b2fd209d26930

commit r17-803-gdbd2deefe760b711635de13b465b2fd209d26930
Author: Eric Botcazou <ebotca...@adacore.com>
Date:   Fri Feb 13 21:21:41 2026 +0100

    ada: Fix build failure for Windows platforms
    
    gcc/ada/ChangeLog:
    
            * libgnarl/s-interr__sigaction.adb: Add with clause for
            System.OS_Interface.

Diff:
---
 gcc/ada/libgnarl/s-interr__sigaction.adb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/ada/libgnarl/s-interr__sigaction.adb 
b/gcc/ada/libgnarl/s-interr__sigaction.adb
index fa8ececdf0a0..9c6a9cf49652 100644
--- a/gcc/ada/libgnarl/s-interr__sigaction.adb
+++ b/gcc/ada/libgnarl/s-interr__sigaction.adb
@@ -36,6 +36,7 @@ with Ada.Unchecked_Conversion;
 
 with Interfaces.C;
 
+with System.OS_Interface;
 with System.Storage_Elements;
 with System.Task_Primitives.Operations;
 with System.Tasking.Utilities;