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signal: Move sys_errlist to a compat symbol

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The symbol is deprecated by strerror since its usage imposes some issues
such as copy relocations.

Its internal name is also changed to _sys_errlist_internal to avoid
static linking usage.  The compat code is also refactored by removing
the over enginered errlist-compat.c generation from manual entried and
extra comment token in linker script file.  It disantangle the code
generation from manual and simplify both Linux and Hurd compat code.

The definitions from errlist.c are moved to errlist.h and a new test
is added to avoid a new errno entry without an associated one in manual.

Checked on x86_64-linux-gnu and i686-linux-gnu. I also run a check-abi
on all affected platforms.

Tested-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Adhemerval Zanella
2020-04-24 21:25:31 -03:00
parent b1ccfc061f
commit f13d260190
30 changed files with 1115 additions and 1898 deletions
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6
libio/stdio.h
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@@ -779,12 +779,6 @@ extern int ferror_unlocked (FILE *__stream) __THROW __wur;
marked with __THROW. */
extern void perror (const char *__s);
/* Provide the declarations for `sys_errlist' and `sys_nerr' if they
are available on this system. Even if available, these variables
should not be used directly. The `strerror' function provides
all the necessary functionality. */
#include <bits/sys_errlist.h>
#ifdef __USE_POSIX
/* Return the system file descriptor for STREAM. */