Accepting request 1279279 from Base:System

- Skip all stack overflow tests in qemu linux-user emulation (forwarded request 1278367 from Andreas_Schwab)

OBS-URL: https://build.opensuse.org/request/show/1279279
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/m4?expand=0&rev=47

gnulib-c-stack.patch

@@ -1,122 +0,0 @@
-From f9e2b20a12a230efa30f1d479563ae07d276a94b Mon Sep 17 00:00:00 2001
-From: Paul Eggert <eggert@cs.ucla.edu>
-Date: Wed, 30 Sep 2020 13:50:36 -0700
-Subject: [PATCH] c-stack: stop using SIGSTKSZ
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-It’s been proposed to stop making SIGSTKSZ an integer constant:
-https://sourceware.org/pipermail/libc-alpha/2020-September/118028.html
-Also, using SIGSTKSZ in #if did not conform to current POSIX.
-Also, avoiding SIGSTKSZ makes the code simpler and easier to grok.
-* lib/c-stack.c (SIGSTKSZ): Remove.
-(alternate_signal_stack): Now a 64 KiB array, for simplicity.
-All uses changed.
----
- ChangeLog     |  9 +++++++++
- lib/c-stack.c | 42 ++++++++++++++++++------------------------
- lib/c-stack.h |  2 +-
- 3 files changed, 28 insertions(+), 25 deletions(-)
-
-Index: m4-1.4.18/lib/c-stack.c
-===================================================================
---- m4-1.4.18.orig/lib/c-stack.c
-+++ m4-1.4.18/lib/c-stack.c
-@@ -50,15 +50,6 @@
- #if ! HAVE_STACK_T && ! defined stack_t
- typedef struct sigaltstack stack_t;
- #endif
--#ifndef SIGSTKSZ
--# define SIGSTKSZ 16384
--#elif HAVE_LIBSIGSEGV && SIGSTKSZ < 16384
--/* libsigsegv 2.6 through 2.8 have a bug where some architectures use
--   more than the Linux default of an 8k alternate stack when deciding
--   if a fault was caused by stack overflow.  */
--# undef SIGSTKSZ
--# define SIGSTKSZ 16384
--#endif
- 
- #include <stdlib.h>
- #include <string.h>
-@@ -89,6 +80,16 @@ typedef struct sigaltstack stack_t;
- # endif
- #endif
- 
-+/* Storage for the alternate signal stack.
-+   64 KiB is not too large for Gnulib-using apps, and is large enough
-+   for all known platforms.  Smaller sizes may run into trouble.
-+   For example, libsigsegv 2.6 through 2.8 have a bug where some
-+   architectures use more than the Linux default of an 8 KiB alternate
-+   stack when deciding if a fault was caused by stack overflow.  */
-+static max_align_t alternate_signal_stack[(64 * 1024
-+                                           + sizeof (max_align_t) - 1)
-+                                          / sizeof (max_align_t)];
-+
- /* The user-specified action to take when a SEGV-related program error
-    or stack overflow occurs.  */
- static void (* volatile segv_action) (int);
-@@ -128,19 +129,6 @@ die (int signo)
- #if (HAVE_SIGALTSTACK && HAVE_DECL_SIGALTSTACK \
-      && HAVE_STACK_OVERFLOW_HANDLING) || HAVE_LIBSIGSEGV
- 
--/* Storage for the alternate signal stack.  */
--static union
--{
--  char buffer[SIGSTKSZ];
--
--  /* These other members are for proper alignment.  There's no
--     standard way to guarantee stack alignment, but this seems enough
--     in practice.  */
--  long double ld;
--  long l;
--  void *p;
--} alternate_signal_stack;
--
- static void
- null_action (int signo __attribute__ ((unused)))
- {
-@@ -205,8 +193,8 @@ c_stack_action (void (*action) (int))
- 
-   /* Always install the overflow handler.  */
-   if (stackoverflow_install_handler (overflow_handler,
--                                     alternate_signal_stack.buffer,
--                                     sizeof alternate_signal_stack.buffer))
-+                                     alternate_signal_stack,
-+                                     sizeof alternate_signal_stack))
-     {
-       errno = ENOTSUP;
-       return -1;
-@@ -279,14 +267,14 @@ c_stack_action (void (*action) (int))
-   stack_t st;
-   struct sigaction act;
-   st.ss_flags = 0;
-+  st.ss_sp = alternate_signal_stack;
-+  st.ss_size = sizeof alternate_signal_stack;
- # if SIGALTSTACK_SS_REVERSED
-   /* Irix mistakenly treats ss_sp as the upper bound, rather than
-      lower bound, of the alternate stack.  */
--  st.ss_sp = alternate_signal_stack.buffer + SIGSTKSZ - sizeof (void *);
--  st.ss_size = sizeof alternate_signal_stack.buffer - sizeof (void *);
--# else
--  st.ss_sp = alternate_signal_stack.buffer;
--  st.ss_size = sizeof alternate_signal_stack.buffer;
-+  st.ss_size -= sizeof (void *);
-+  char *ss_sp = st.ss_sp;
-+  st.ss_sp = ss_sp + st.ss_size;
- # endif
-   r = sigaltstack (&st, NULL);
-   if (r != 0)
-Index: m4-1.4.18/lib/c-stack.h
-===================================================================
---- m4-1.4.18.orig/lib/c-stack.h
-+++ m4-1.4.18/lib/c-stack.h
-@@ -34,7 +34,7 @@
-    A null ACTION acts like an action that does nothing.
- 
-    ACTION must be async-signal-safe.  ACTION together with its callees
--   must not require more than SIGSTKSZ bytes of stack space.  Also,
-+   must not require more than 64 KiB of stack space.  Also,
-    ACTION should not call longjmp, because this implementation does
-    not guarantee that it is safe to return to the original stack.
- 

gnulib-libio.patch

@@ -1,145 +0,0 @@
-2018-03-05  Paul Eggert  <eggert@cs.ucla.edu>
-
-	fflush: adjust to glibc 2.28 libio.h removal
-	Problem reported by Daniel P. Berrangé in:
-	https://lists.gnu.org/r/bug-gnulib/2018-03/msg00000.html
-	* lib/fbufmode.c (fbufmode):
-	* lib/fflush.c (clear_ungetc_buffer_preserving_position)
-	(disable_seek_optimization, rpl_fflush):
-	* lib/fpending.c (__fpending):
-	* lib/fpurge.c (fpurge):
-	* lib/freadable.c (freadable):
-	* lib/freadahead.c (freadahead):
-	* lib/freading.c (freading):
-	* lib/freadptr.c (freadptr):
-	* lib/freadseek.c (freadptrinc):
-	* lib/fseeko.c (fseeko):
-	* lib/fseterr.c (fseterr):
-	* lib/fwritable.c (fwritable):
-	* lib/fwriting.c (fwriting):
-	Check _IO_EOF_SEEN instead of _IO_ftrylockfile.
-	* lib/stdio-impl.h (_IO_IN_BACKUP) [_IO_EOF_SEEN]:
-	Define if not already defined.
-
-Index: m4-1.4.18/lib/fflush.c
-===================================================================
---- m4-1.4.18.orig/lib/fflush.c
-+++ m4-1.4.18/lib/fflush.c
-@@ -33,7 +33,7 @@
- #undef fflush
- 
- 
--#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
- 
- /* Clear the stream's ungetc buffer, preserving the value of ftello (fp).  */
- static void
-@@ -72,7 +72,7 @@ clear_ungetc_buffer (FILE *fp)
- 
- #endif
- 
--#if ! (defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */)
-+#if ! (defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */)
- 
- # if (defined __sferror || defined __DragonFly__ || defined __ANDROID__) && defined __SNPT
- /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Android */
-@@ -148,7 +148,7 @@ rpl_fflush (FILE *stream)
-   if (stream == NULL || ! freading (stream))
-     return fflush (stream);
- 
--#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
- 
-   clear_ungetc_buffer_preserving_position (stream);
- 
-Index: m4-1.4.18/lib/fpending.c
-===================================================================
---- m4-1.4.18.orig/lib/fpending.c
-+++ m4-1.4.18/lib/fpending.c
-@@ -32,7 +32,7 @@ __fpending (FILE *fp)
-   /* Most systems provide FILE as a struct and the necessary bitmask in
-      <stdio.h>, because they need it for implementing getc() and putc() as
-      fast macros.  */
--#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-   return fp->_IO_write_ptr - fp->_IO_write_base;
- #elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
-   /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Android */
-Index: m4-1.4.18/lib/fpurge.c
-===================================================================
---- m4-1.4.18.orig/lib/fpurge.c
-+++ m4-1.4.18/lib/fpurge.c
-@@ -62,7 +62,7 @@ fpurge (FILE *fp)
-   /* Most systems provide FILE as a struct and the necessary bitmask in
-      <stdio.h>, because they need it for implementing getc() and putc() as
-      fast macros.  */
--# if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+# if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-   fp->_IO_read_end = fp->_IO_read_ptr;
-   fp->_IO_write_ptr = fp->_IO_write_base;
-   /* Avoid memory leak when there is an active ungetc buffer.  */
-Index: m4-1.4.18/lib/freadahead.c
-===================================================================
---- m4-1.4.18.orig/lib/freadahead.c
-+++ m4-1.4.18/lib/freadahead.c
-@@ -25,7 +25,7 @@
- size_t
- freadahead (FILE *fp)
- {
--#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-   if (fp->_IO_write_ptr > fp->_IO_write_base)
-     return 0;
-   return (fp->_IO_read_end - fp->_IO_read_ptr)
-Index: m4-1.4.18/lib/freading.c
-===================================================================
---- m4-1.4.18.orig/lib/freading.c
-+++ m4-1.4.18/lib/freading.c
-@@ -31,7 +31,7 @@ freading (FILE *fp)
-   /* Most systems provide FILE as a struct and the necessary bitmask in
-      <stdio.h>, because they need it for implementing getc() and putc() as
-      fast macros.  */
--# if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+# if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-   return ((fp->_flags & _IO_NO_WRITES) != 0
-           || ((fp->_flags & (_IO_NO_READS | _IO_CURRENTLY_PUTTING)) == 0
-               && fp->_IO_read_base != NULL));
-Index: m4-1.4.18/lib/fseeko.c
-===================================================================
---- m4-1.4.18.orig/lib/fseeko.c
-+++ m4-1.4.18/lib/fseeko.c
-@@ -47,7 +47,7 @@ fseeko (FILE *fp, off_t offset, int when
- #endif
- 
-   /* These tests are based on fpurge.c.  */
--#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-   if (fp->_IO_read_end == fp->_IO_read_ptr
-       && fp->_IO_write_ptr == fp->_IO_write_base
-       && fp->_IO_save_base == NULL)
-@@ -123,7 +123,7 @@ fseeko (FILE *fp, off_t offset, int when
-           return -1;
-         }
- 
--#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-+#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
-       fp->_flags &= ~_IO_EOF_SEEN;
-       fp->_offset = pos;
- #elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
-Index: m4-1.4.18/lib/stdio-impl.h
-===================================================================
---- m4-1.4.18.orig/lib/stdio-impl.h
-+++ m4-1.4.18/lib/stdio-impl.h
-@@ -18,6 +18,12 @@
-    the same implementation of stdio extension API, except that some fields
-    have different naming conventions, or their access requires some casts.  */
- 
-+/* Glibc 2.28 made _IO_IN_BACKUP private.  For now, work around this
-+   problem by defining it ourselves.  FIXME: Do not rely on glibc
-+   internals.  */
-+#if !defined _IO_IN_BACKUP && defined _IO_EOF_SEEN
-+# define _IO_IN_BACKUP 0x100
-+#endif
- 
- /* BSD stdio derived implementations.  */
- 

m4-1.4.18.tar.xz.sig

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