Add internal implementations for argp.h, err.h, and error.h functions

Since the introduction of explicit flags in the internal implementation
of the printf family of functions, the 'mode' parameter can be used to
select which format long double parameters have (with the mode flag:
PRINTF_LDBL_IS_DBL).  This patch uses this feature in the implementation
of some functions in argp.h, err.h, and error.h (only those that take a
format string and positional parameters).  Future patches will add
support for 'nldbl' and 'ieee128' versions of these functions.

Tested for powerpc64le and x86_64.

1 files changed, 24 insertions, 16 deletions

diff --git a/argp/argp-help.c b/argp/argp-help.c
index 52ec231..3b1727c 100644
--- a/argp/argp-help.c
+++ b/argp/argp-help.c
@@ -1750,7 +1750,8 @@ weak_alias (__argp_state_help, argp_state_help)
    by the program name and `:', to stderr, and followed by a `Try ... --help'
    message, then exit (1).  */
 void
-__argp_error (const struct argp_state *state, const char *fmt, ...)
+__argp_error_internal (const struct argp_state *state, const char *fmt,
+		       va_list ap, unsigned int mode_flags)
 {
   if (!state || !(state->flags & ARGP_NO_ERRS))
     {
@@ -1758,18 +1759,14 @@ __argp_error (const struct argp_state *state, const char *fmt, ...)
 
       if (stream)
 	{
-	  va_list ap;
-
 #if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
 	  __flockfile (stream);
 #endif
 
-	  va_start (ap, fmt);
-
 #ifdef _LIBC
 	  char *buf;
 
-	  if (__vasprintf_internal (&buf, fmt, ap, 0) < 0)
+	  if (__vasprintf_internal (&buf, fmt, ap, mode_flags) < 0)
 	    buf = NULL;
 
 	  __fxprintf (stream, "%s: %s\n",
@@ -1789,14 +1786,20 @@ __argp_error (const struct argp_state *state, const char *fmt, ...)
 
 	  __argp_state_help (state, stream, ARGP_HELP_STD_ERR);
 
-	  va_end (ap);
-
 #if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
 	  __funlockfile (stream);
 #endif
 	}
     }
 }
+void
+__argp_error (const struct argp_state *state, const char *fmt, ...)
+{
+  va_list ap;
+  va_start (ap, fmt);
+  __argp_error_internal (state, fmt, ap, 0);
+  va_end (ap);
+}
 #ifdef weak_alias
 weak_alias (__argp_error, argp_error)
 #endif
@@ -1810,8 +1813,9 @@ weak_alias (__argp_error, argp_error)
    *parsing errors*, and the former is for other problems that occur during
    parsing but don't reflect a (syntactic) problem with the input.  */
 void
-__argp_failure (const struct argp_state *state, int status, int errnum,
-		const char *fmt, ...)
+__argp_failure_internal (const struct argp_state *state, int status,
+			 int errnum, const char *fmt, va_list ap,
+			 unsigned int mode_flags)
 {
   if (!state || !(state->flags & ARGP_NO_ERRS))
     {
@@ -1833,13 +1837,10 @@ __argp_failure (const struct argp_state *state, int status, int errnum,
 
 	  if (fmt)
 	    {
-	      va_list ap;
-
-	      va_start (ap, fmt);
 #ifdef _LIBC
 	      char *buf;
 
-	      if (__vasprintf_internal (&buf, fmt, ap, 0) < 0)
+	      if (__vasprintf_internal (&buf, fmt, ap, mode_flags) < 0)
 		buf = NULL;
 
 	      __fxprintf (stream, ": %s", buf);
@@ -1851,8 +1852,6 @@ __argp_failure (const struct argp_state *state, int status, int errnum,
 
 	      vfprintf (stream, fmt, ap);
 #endif
-
-	      va_end (ap);
 	    }
 
 	  if (errnum)
@@ -1889,6 +1888,15 @@ __argp_failure (const struct argp_state *state, int status, int errnum,
 	}
     }
 }
+void
+__argp_failure (const struct argp_state *state, int status, int errnum,
+		const char *fmt, ...)
+{
+  va_list ap;
+  va_start (ap, fmt);
+  __argp_failure_internal (state, status, errnum, fmt, ap, 0);
+  va_end (ap);
+}
 #ifdef weak_alias
 weak_alias (__argp_failure, argp_failure)
 #endif