[v1,5/7] ldbl-opt: Add err, errx, verr, verrx, warn, warnx, vwarn, and vwarnx

Message ID 20181206180824.1761-6-gabriel@inconstante.eti.br
State New
Headers show
Series
  • Add missing nldbl functions to libc
Related show

Commit Message

Gabriel F. T. Gomes Dec. 6, 2018, 6:08 p.m.
When support for long double format with 128-bits (-mlong-double-128)
was added for platforms where long double had the same format as double,
such as powerpc, compatibility versions for the functions listed in the
commit title were missed.  Since the older format of long double can
still be used (with -mlong-double-64), using these functions with a
format string that requests the printing of long double variables will
produce wrong outputs.

This patch adds the missing compatibility functions and header magic to
redirect calls to them when -mlong-double-64 is in use.

Tested for powerpc64 and powerpc64le.

	* include/err.h: Add prototypes for the internal functions:
	__vwarnx_internal and __vwarn_internal.
	* misc/bits/err-ldbl.h: New file.
	* misc/err.h: Include bits/err-ldbl.h when __LDBL_COMPAT is
	defined, i.e.: when -mlong-double-64 is in use.
	* sysdeps/ieee754/ldbl-opt/Versions (libc): Add __nldbl_warn,
	__nldbl_vwarn, __nldbl_warnx, __nldbl_vwarnx, __nldbl_err,
	__nldbl_verr, __nldbl_errx, and __nldbl_verrx.
	* sysdeps/ieee754/ldbl-opt/nldbl-compat.c: Include err.h.
	(VA_CALL): New macro.
	(__nldbl_vwarn, __nldbl_vwarnx, __nldbl_warn, __nldbl_warnx)
	(__nldbl_verr, __nldbl_verrx, __nldbl_err, __nldbl_errx): New
	functions.
	* sysdeps/ieee754/ldbl-opt/nldbl-compat.h: Include err.h and
	declare prototypes for the new functions.
	* sysdeps/unix/sysv/linux/alpha/libc.abilist: Update.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
---
 include/err.h                                      |  9 ++++
 misc/bits/err-ldbl.h                               | 30 +++++++++++
 misc/err.h                                         |  4 ++
 sysdeps/ieee754/ldbl-opt/Versions                  |  2 +
 sysdeps/ieee754/ldbl-opt/nldbl-compat.c            | 61 ++++++++++++++++++++++
 sysdeps/ieee754/ldbl-opt/nldbl-compat.h            |  9 ++++
 sysdeps/unix/sysv/linux/alpha/libc.abilist         |  8 +++
 .../sysv/linux/powerpc/powerpc32/fpu/libc.abilist  |  8 +++
 .../linux/powerpc/powerpc32/nofpu/libc.abilist     |  8 +++
 .../sysv/linux/powerpc/powerpc64/libc-le.abilist   |  8 +++
 .../unix/sysv/linux/powerpc/powerpc64/libc.abilist |  8 +++
 sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist  |  8 +++
 sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist  |  8 +++
 sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist |  8 +++
 14 files changed, 179 insertions(+)
 create mode 100644 misc/bits/err-ldbl.h

-- 
2.14.5

Patch

diff --git a/include/err.h b/include/err.h
index 382855938e..7c05cd1dbb 100644
--- a/include/err.h
+++ b/include/err.h
@@ -1,6 +1,15 @@ 
 #ifndef _ERR_H
 #include <misc/err.h>
 
+/* Prototypes for internal err.h functions.  */
+void
+__vwarnx_internal (const char *format, __gnuc_va_list ap,
+		   unsigned int mode_flags);
+
+void
+__vwarn_internal (const char *format, __gnuc_va_list ap,
+		   unsigned int mode_flags);
+
 # ifndef _ISOMAC
 
 libc_hidden_proto (warn)
diff --git a/misc/bits/err-ldbl.h b/misc/bits/err-ldbl.h
new file mode 100644
index 0000000000..dd74c0ee67
--- /dev/null
+++ b/misc/bits/err-ldbl.h
@@ -0,0 +1,30 @@ 
+/* Redirections for err.h functions for -mlong-double-64.
+   Copyright (C) 2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _ERR_H
+# error "Never include <bits/err-ldbl.h> directly; use <err.h> instead."
+#endif
+
+__LDBL_REDIR_DECL (warn)
+__LDBL_REDIR_DECL (vwarn)
+__LDBL_REDIR_DECL (warnx)
+__LDBL_REDIR_DECL (vwarnx)
+__LDBL_REDIR_DECL (err)
+__LDBL_REDIR_DECL (verr)
+__LDBL_REDIR_DECL (errx)
+__LDBL_REDIR_DECL (verrx)
diff --git a/misc/err.h b/misc/err.h
index fec4fd2f77..f2d4befd95 100644
--- a/misc/err.h
+++ b/misc/err.h
@@ -52,6 +52,10 @@  extern void errx (int __status, const char *__format, ...)
 extern void verrx (int __status, const char *, __gnuc_va_list)
      __attribute__ ((__noreturn__, __format__ (__printf__, 2, 0)));
 
+#ifdef __LDBL_COMPAT
+# include <bits/err-ldbl.h>
+#endif
+
 __END_DECLS
 
 #endif	/* err.h */
diff --git a/sysdeps/ieee754/ldbl-opt/Versions b/sysdeps/ieee754/ldbl-opt/Versions
index 855f541c48..5bc88ddb8f 100644
--- a/sysdeps/ieee754/ldbl-opt/Versions
+++ b/sysdeps/ieee754/ldbl-opt/Versions
@@ -80,6 +80,8 @@  libc {
   }
   GLIBC_2.29 {
     __nldbl_argp_error; __nldbl_argp_failure;
+    __nldbl_warn; __nldbl_vwarn; __nldbl_warnx; __nldbl_vwarnx;
+    __nldbl_err; __nldbl_verr; __nldbl_errx; __nldbl_verrx;
   }
 }
 libm {
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-compat.c b/sysdeps/ieee754/ldbl-opt/nldbl-compat.c
index 0cc9ab0f7a..10c0fe6ac9 100644
--- a/sysdeps/ieee754/ldbl-opt/nldbl-compat.c
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-compat.c
@@ -18,6 +18,7 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #include <argp.h>
+#include <err.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <libio/strfile.h>
@@ -1006,6 +1007,66 @@  __nldbl_argp_failure (const struct argp_state *state, int status,
   va_end (ap);
 }
 
+#define VA_CALL(call)							\
+{									\
+  va_list ap;								\
+  va_start (ap, format);						\
+  call (format, ap, PRINTF_LDBL_IS_DBL);				\
+  va_end (ap);								\
+}
+
+void
+__nldbl_err (int status, const char *format, ...)
+{
+  VA_CALL (__vwarn_internal)
+  exit (status);
+}
+
+void
+__nldbl_errx (int status, const char *format, ...)
+{
+  VA_CALL (__vwarnx_internal)
+  exit (status);
+}
+
+void
+__nldbl_verr (int status, const char *format, __gnuc_va_list ap)
+{
+  __vwarn_internal (format, ap, PRINTF_LDBL_IS_DBL);
+  exit (status);
+}
+
+void
+__nldbl_verrx (int status, const char *format, __gnuc_va_list ap)
+{
+  __vwarnx_internal (format, ap, PRINTF_LDBL_IS_DBL);
+  exit (status);
+}
+
+void
+__nldbl_warn (const char *format, ...)
+{
+  VA_CALL (__vwarn_internal)
+}
+
+void
+__nldbl_warnx (const char *format, ...)
+{
+  VA_CALL (__vwarnx_internal)
+}
+
+void
+__nldbl_vwarn (const char *format, __gnuc_va_list ap)
+{
+  __vwarn_internal (format, ap, PRINTF_LDBL_IS_DBL);
+}
+
+void
+__nldbl_vwarnx (const char *format, __gnuc_va_list ap)
+{
+  __vwarnx_internal (format, ap, PRINTF_LDBL_IS_DBL);
+}
+
 #if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
 compat_symbol (libc, __nldbl__IO_printf, _IO_printf, GLIBC_2_0);
 compat_symbol (libc, __nldbl__IO_sprintf, _IO_sprintf, GLIBC_2_0);
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-compat.h b/sysdeps/ieee754/ldbl-opt/nldbl-compat.h
index d263b19c5b..35f49165e2 100644
--- a/sysdeps/ieee754/ldbl-opt/nldbl-compat.h
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-compat.h
@@ -27,6 +27,7 @@ 
 /* Avoid long double prototypes.  */
 #define __NO_LONG_DOUBLE_MATH	1
 #include <argp.h>
+#include <err.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <stdint.h>
@@ -79,6 +80,14 @@  NLDBL_DECL (__isoc99_vfwscanf);
 NLDBL_DECL (__isoc99_vswscanf);
 NLDBL_DECL (argp_error);
 NLDBL_DECL (argp_failure);
+NLDBL_DECL (warn);
+NLDBL_DECL (vwarn);
+NLDBL_DECL (warnx);
+NLDBL_DECL (vwarnx);
+NLDBL_DECL (err);
+NLDBL_DECL (verr);
+NLDBL_DECL (errx);
+NLDBL_DECL (verrx);
 
 /* These do not exist in the normal interface, but must exist in the
    __nldbl interface so that they can be called from libnldbl.  */
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index 3a7c918c93..e56a55b90b 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -2035,6 +2035,14 @@  GLIBC_2.28 thrd_sleep F
 GLIBC_2.28 thrd_yield F
 GLIBC_2.29 __nldbl_argp_error F
 GLIBC_2.29 __nldbl_argp_failure F
+GLIBC_2.29 __nldbl_err F
+GLIBC_2.29 __nldbl_errx F
+GLIBC_2.29 __nldbl_verr F
+GLIBC_2.29 __nldbl_verrx F
+GLIBC_2.29 __nldbl_vwarn F
+GLIBC_2.29 __nldbl_vwarnx F
+GLIBC_2.29 __nldbl_warn F
+GLIBC_2.29 __nldbl_warnx F
 GLIBC_2.29 posix_spawn_file_actions_addchdir_np F
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index 481b689b0e..5e8255daa2 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -1995,6 +1995,14 @@  GLIBC_2.28 thrd_sleep F
 GLIBC_2.28 thrd_yield F
 GLIBC_2.29 __nldbl_argp_error F
 GLIBC_2.29 __nldbl_argp_failure F
+GLIBC_2.29 __nldbl_err F
+GLIBC_2.29 __nldbl_errx F
+GLIBC_2.29 __nldbl_verr F
+GLIBC_2.29 __nldbl_verrx F
+GLIBC_2.29 __nldbl_vwarn F
+GLIBC_2.29 __nldbl_vwarnx F
+GLIBC_2.29 __nldbl_warn F
+GLIBC_2.29 __nldbl_warnx F
 GLIBC_2.29 posix_spawn_file_actions_addchdir_np F
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index 35f413c0cc..14d6045c25 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -1999,6 +1999,14 @@  GLIBC_2.28 thrd_sleep F
 GLIBC_2.28 thrd_yield F
 GLIBC_2.29 __nldbl_argp_error F
 GLIBC_2.29 __nldbl_argp_failure F
+GLIBC_2.29 __nldbl_err F
+GLIBC_2.29 __nldbl_errx F
+GLIBC_2.29 __nldbl_verr F
+GLIBC_2.29 __nldbl_verrx F
+GLIBC_2.29 __nldbl_vwarn F
+GLIBC_2.29 __nldbl_vwarnx F
+GLIBC_2.29 __nldbl_warn F
+GLIBC_2.29 __nldbl_warnx F
 GLIBC_2.29 posix_spawn_file_actions_addchdir_np F
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
index 8b011c93a0..b20910a051 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
@@ -2230,4 +2230,12 @@  GLIBC_2.28 thrd_sleep F
 GLIBC_2.28 thrd_yield F
 GLIBC_2.29 __nldbl_argp_error F
 GLIBC_2.29 __nldbl_argp_failure F
+GLIBC_2.29 __nldbl_err F
+GLIBC_2.29 __nldbl_errx F
+GLIBC_2.29 __nldbl_verr F
+GLIBC_2.29 __nldbl_verrx F
+GLIBC_2.29 __nldbl_vwarn F
+GLIBC_2.29 __nldbl_vwarnx F
+GLIBC_2.29 __nldbl_warn F
+GLIBC_2.29 __nldbl_warnx F
 GLIBC_2.29 posix_spawn_file_actions_addchdir_np F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
index 565f32e53a..2b8be65990 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
@@ -125,6 +125,14 @@  GLIBC_2.28 thrd_sleep F
 GLIBC_2.28 thrd_yield F
 GLIBC_2.29 __nldbl_argp_error F
 GLIBC_2.29 __nldbl_argp_failure F
+GLIBC_2.29 __nldbl_err F
+GLIBC_2.29 __nldbl_errx F
+GLIBC_2.29 __nldbl_verr F
+GLIBC_2.29 __nldbl_verrx F
+GLIBC_2.29 __nldbl_vwarn F
+GLIBC_2.29 __nldbl_vwarnx F
+GLIBC_2.29 __nldbl_warn F
+GLIBC_2.29 __nldbl_warnx F
 GLIBC_2.29 posix_spawn_file_actions_addchdir_np F
 GLIBC_2.3 _Exit F
 GLIBC_2.3 _IO_2_1_stderr_ D 0xe0
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index 0233991ff0..424b21c486 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -2004,6 +2004,14 @@  GLIBC_2.28 thrd_sleep F
 GLIBC_2.28 thrd_yield F
 GLIBC_2.29 __nldbl_argp_error F
 GLIBC_2.29 __nldbl_argp_failure F
+GLIBC_2.29 __nldbl_err F
+GLIBC_2.29 __nldbl_errx F
+GLIBC_2.29 __nldbl_verr F
+GLIBC_2.29 __nldbl_verrx F
+GLIBC_2.29 __nldbl_vwarn F
+GLIBC_2.29 __nldbl_vwarnx F
+GLIBC_2.29 __nldbl_warn F
+GLIBC_2.29 __nldbl_warnx F
 GLIBC_2.29 posix_spawn_file_actions_addchdir_np F
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index a1ebf17ee0..7745cc2a66 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -1910,6 +1910,14 @@  GLIBC_2.28 thrd_yield F
 GLIBC_2.29 __fentry__ F
 GLIBC_2.29 __nldbl_argp_error F
 GLIBC_2.29 __nldbl_argp_failure F
+GLIBC_2.29 __nldbl_err F
+GLIBC_2.29 __nldbl_errx F
+GLIBC_2.29 __nldbl_verr F
+GLIBC_2.29 __nldbl_verrx F
+GLIBC_2.29 __nldbl_vwarn F
+GLIBC_2.29 __nldbl_vwarnx F
+GLIBC_2.29 __nldbl_warn F
+GLIBC_2.29 __nldbl_warnx F
 GLIBC_2.29 posix_spawn_file_actions_addchdir_np F
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index 76c5b297c3..b1dc3f0aaa 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -1998,6 +1998,14 @@  GLIBC_2.28 thrd_sleep F
 GLIBC_2.28 thrd_yield F
 GLIBC_2.29 __nldbl_argp_error F
 GLIBC_2.29 __nldbl_argp_failure F
+GLIBC_2.29 __nldbl_err F
+GLIBC_2.29 __nldbl_errx F
+GLIBC_2.29 __nldbl_verr F
+GLIBC_2.29 __nldbl_verrx F
+GLIBC_2.29 __nldbl_vwarn F
+GLIBC_2.29 __nldbl_vwarnx F
+GLIBC_2.29 __nldbl_warn F
+GLIBC_2.29 __nldbl_warnx F
 GLIBC_2.29 posix_spawn_file_actions_addchdir_np F
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F