[gcc r13-1486] [Ada] Annotate GNAT.Sockets with No_Return aspects

[Pierre-Marie de Rodat <pmderodat@gcc.gnu.org>]

https://gcc.gnu.org/g:5c0729d2edbc963e5bdea29547aa7b0c751cb491

commit r13-1486-g5c0729d2edbc963e5bdea29547aa7b0c751cb491
Author: Piotr Trojanek <trojanek@adacore.com>
Date:   Mon Jun 6 16:41:32 2022 +0200

    [Ada] Annotate GNAT.Sockets with No_Return aspects
    
    Opportunity for extra annotations spotted while fixing detection of
    unreachable code that follows calls to procedures annotated with
    No_Return.
    
    gcc/ada/
    
            * libgnat/g-socket.adb (Raise_Host_Error): Add No_Return aspect.
            (Raise_GAI_Error): Likewise.
            * libgnat/g-socket.ads (Raise_Socket_Error): Likewise.

Diff:
---
 gcc/ada/libgnat/g-socket.adb | 6 ++++--
 gcc/ada/libgnat/g-socket.ads | 2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/gcc/ada/libgnat/g-socket.adb b/gcc/ada/libgnat/g-socket.adb
index 12abb683bb0..4267d9f408f 100644
--- a/gcc/ada/libgnat/g-socket.adb
+++ b/gcc/ada/libgnat/g-socket.adb
@@ -191,12 +191,14 @@ package body GNAT.Sockets is
        else Value);
    --  Removes dot at the end of error message
 
-   procedure Raise_Host_Error (H_Error : Integer; Name : String);
+   procedure Raise_Host_Error (H_Error : Integer; Name : String)
+   with No_Return;
    --  Raise Host_Error exception with message describing error code (note
    --  hstrerror seems to be obsolete) from h_errno. Name is the name
    --  or address that was being looked up.
 
-   procedure Raise_GAI_Error (RC : C.int; Name : String);
+   procedure Raise_GAI_Error (RC : C.int; Name : String)
+   with No_Return;
    --  Raise Host_Error with exception message in case of errors in
    --  getaddrinfo and getnameinfo.
 
diff --git a/gcc/ada/libgnat/g-socket.ads b/gcc/ada/libgnat/g-socket.ads
index 41ede44ef69..cfc47bea7f9 100644
--- a/gcc/ada/libgnat/g-socket.ads
+++ b/gcc/ada/libgnat/g-socket.ads
@@ -1593,7 +1593,7 @@ private
    Wait_For_A_Full_Reception : constant Request_Flag_Type := 4;
    Send_End_Of_Record        : constant Request_Flag_Type := 8;
 
-   procedure Raise_Socket_Error (Error : Integer);
+   procedure Raise_Socket_Error (Error : Integer) with No_Return;
    --  Raise Socket_Error with an exception message describing the error code
    --  from errno.