File gcc8-ada-MINSTKSZ.patch of Package gcc8

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File gcc8-ada-MINSTKSZ.patch of Package gcc8

From a5a7cdcaa0c29ee547c41d24f495e9694a6fe7f1 Mon Sep 17 00:00:00 2001
From: Eric Botcazou <ebotcazou@adacore.com>
Date: Fri, 5 Mar 2021 12:45:41 +0100
Subject: [PATCH] Fix build breakage with latest glibc release
To: gcc-patches@gcc.gnu.org

gcc/ada/
	PR ada/99264
	* init.c (__gnat_alternate_sta) [Linux]: Remove preprocessor test on
	MINSIGSTKSZ and bump size to 32KB.
	* libgnarl/s-osinte__linux.ads (Alternate_Stack_Size): Bump to 32KB.
---
 gcc/ada/init.c                       | 8 ++------
 gcc/ada/libgnarl/s-osinte__linux.ads | 2 +-
 2 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/gcc/ada/init.c b/gcc/ada/init.c
index 00f32e5e02a..050800ffbf8 100644
--- a/gcc/ada/init.c
+++ b/gcc/ada/init.c
@@ -570,12 +570,8 @@ __gnat_error_handler (int sig, siginfo_t *si ATTRIBUTE_UNUSED, void *ucontext)
 
 #ifndef __ia64__
 #define HAVE_GNAT_ALTERNATE_STACK 1
-/* This must be in keeping with System.OS_Interface.Alternate_Stack_Size.
-   It must be larger than MINSIGSTKSZ and hopefully near 2 * SIGSTKSZ.  */
-# if 16 * 1024 < MINSIGSTKSZ
-#  error "__gnat_alternate_stack too small"
-# endif
-char __gnat_alternate_stack[16 * 1024];
+/* This must be in keeping with System.OS_Interface.Alternate_Stack_Size.  */
+char __gnat_alternate_stack[32 * 1024];
 #endif
 
 #ifdef __XENO__
diff --git a/gcc/ada/libgnarl/s-osinte__linux.ads b/gcc/ada/libgnarl/s-osinte__linux.ads
index ba3b82423ad..9d5cd05257a 100644
--- a/gcc/ada/libgnarl/s-osinte__linux.ads
+++ b/gcc/ada/libgnarl/s-osinte__linux.ads
@@ -329,7 +329,7 @@ package System.OS_Interface is
    pragma Import (C, Alternate_Stack, "__gnat_alternate_stack");
    --  The alternate signal stack for stack overflows
 
-   Alternate_Stack_Size : constant := 16 * 1024;
+   Alternate_Stack_Size : constant := 32 * 1024;
    --  This must be in keeping with init.c:__gnat_alternate_stack
 
    function Get_Stack_Base (thread : pthread_t) return Address;
-- 
2.34.1

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File gcc8-ada-MINSTKSZ.patch of Package gcc8

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