merge from gcc

1 files changed, 158 insertions, 144 deletions

diff --git a/libiberty/functions.texi b/libiberty/functions.texi
index ac97726..d863779 100644
--- a/libiberty/functions.texi
+++ b/libiberty/functions.texi
@@ -25,139 +25,6 @@ nineteen EBCDIC varying characters is tested; exercise caution.)
 @end ftable
 @end defvr
 
-@c pexecute.txh:1
-@deftypefn Extension struct pex_obj *pex_init (int @var{flags}, const char *@var{pname}, const char *@var{tempbase})
-
-Prepare to execute one or more programs, with standard output of each
-program fed to standard input of the next.  This is a system
-independent interface to execute a pipeline.
-
-@var{flags} is a bitwise combination of the following:
-
-@table @code
-
-@vindex PEX_RECORD_TIMES
-@item PEX_RECORD_TIMES
-Record subprocess times if possible.
-
-@vindex PEX_USE_PIPES
-@item PEX_USE_PIPES
-Use pipes for communication between processes, if possible.
-
-@vindex PEX_SAVE_TEMPS
-@item PEX_SAVE_TEMPS
-Don't delete temporary files used for communication between
-processes.
-
-@end table
-
-@var{pname} is the name of program to be executed, used in error
-messages.  @var{tempbase} is a base name to use for any required
-temporary files; it may be @code{NULL} to use a randomly chosen name.
-
-@end deftypefn
-
-@c pexecute.txh:161
-@deftypefn Extension const char *pex_one (int @var{flags}, const char *@var{executable}, char * const *@var{argv}, const char *@var{pname}, const char *@var{outname}, const char *@var{errname}, int *@var{status}, int *@var{err})
-
-An interface to @code{pex_init} to permit the easy execution of a
-single program.  The return value and most of the parameters are as
-for a call to @code{pex_run}.  @var{flags} is restricted to a
-combination of @code{PEX_SEARCH}, @code{PEX_STDERR_TO_STDOUT}, and
-@code{PEX_BINARY_OUTPUT}.  @var{outname} is interpreted as if
-@code{PEX_LAST} were set.  On a successful return, *@var{status} will
-be set to the exit status of the program.
-
-@end deftypefn
-
-@c pexecute.txh:32
-@deftypefn Extension const char *pex_run (struct pex_obj *@var{obj}, int @var{flags}, const char *@var{executable}, char * const *@var{argv}, const char *@var{outname}, const char *@var{errname}, int *@var{err})
-
-Execute one program in a pipeline.  On success this returns
-@code{NULL}.  On failure it returns an error message, a statically
-allocated string.
-
-@var{obj} is returned by a previous call to @code{pex_init}.
-
-@var{flags} is a bitwise combination of the following:
-
-@table @code
-
-@vindex PEX_LAST
-@item PEX_LAST
-This must be set on the last program in the pipeline.  In particular,
-it should be set when executing a single program.  The standard output
-of the program will be sent to @var{outname}, or, if @var{outname} is
-@code{NULL}, to the standard output of the calling program.  This
-should not be set if you want to call @code{pex_read_output}
-(described below).  After a call to @code{pex_run} with this bit set,
-@var{pex_run} may no longer be called with the same @var{obj}.
-
-@vindex PEX_SEARCH
-@item PEX_SEARCH
-Search for the program using the user's executable search path.
-
-@vindex PEX_SUFFIX
-@item PEX_SUFFIX
-@var{outname} is a suffix.  See the description of @var{outname},
-below.
-
-@vindex PEX_STDERR_TO_STDOUT
-@item PEX_STDERR_TO_STDOUT
-Send the program's standard error to standard output, if possible.
-
-@vindex PEX_BINARY_INPUT
-@vindex PEX_BINARY_OUTPUT
-@item PEX_BINARY_INPUT
-@itemx PEX_BINARY_OUTPUT
-The standard input (output) of the program should be read (written) in
-binary mode rather than text mode.  These flags are ignored on systems
-which do not distinguish binary mode and text mode, such as Unix.  For
-proper behavior these flags should match appropriately--a call to
-@code{pex_run} using @code{PEX_BINARY_OUTPUT} should be followed by a
-call using @code{PEX_BINARY_INPUT}.
-@end table
-
-@var{executable} is the program to execute.  @var{argv} is the set of
-arguments to pass to the program; normally @code{@var{argv}[0]} will
-be a copy of @var{executable}.
-
-@var{outname} is used to set the name of the file to use for standard
-output.  There are two cases in which no output file will be used: 1)
-if @code{PEX_LAST} is not set in @var{flags}, and @code{PEX_USE_PIPES}
-was set in the call to @code{pex_init}, and the system supports pipes;
-2) if @code{PEX_LAST} is set in @var{flags}, and @var{outname} is
-@code{NULL}.  Otherwise the code will use a file to hold standard
-output.  If @code{PEX_LAST} is not set, this file is considered to be
-a temporary file, and it will be removed when no longer needed, unless
-@code{PEX_SAVE_TEMPS} was set in the call to @code{pex_init}.
-
-There are two cases to consider when setting the name of the file to
-hold standard output.
-
-First case: @code{PEX_SUFFIX} is set in @var{flags}.  In this case
-@var{outname} may not be @code{NULL}.  If the @var{tempbase} parameter
-to @code{pex_init} was not @code{NULL}, then the output file name is
-the concatenation of @var{tempbase} and @var{outname}.  If
-@var{tempbase} was @code{NULL}, then the output file name is a random
-file name ending in @var{outname}.
-
-Second case: @code{PEX_SUFFIX} was not set in @var{flags}.  In this
-case, if @var{outname} is not @code{NULL}, it is used as the output
-file name.  If @var{outname} is @code{NULL}, and @var{tempbase} was
-not NULL, the output file name is randomly chosen using
-@var{tempbase}.  Otherwise the output file name is chosen completely
-at random.
-
-@var{errname} is the file name to use for standard error output.  If
-it is @code{NULL}, standard error is the same as the caller.
-Otherwise, standard error is written to the named file.
-
-On an error return, the code sets @code{*@var{err}} to an @code{errno}
-value, or to 0 if there is no relevant @code{errno}.
-
-@end deftypefn
-
 @c alloca.c:26
 @deftypefn Replacement void* alloca (size_t @var{size})
 
@@ -363,7 +230,7 @@ and inode numbers.
 @end deftypefn
 
 @c fopen_unlocked.c:48
-@deftypefn Extension FILE * fdopen_unlocked (int @var{fildes}, const char * @var{mode})
+@deftypefn Extension {FILE *} fdopen_unlocked (int @var{fildes}, const char * @var{mode})
 
 Opens and returns a @code{FILE} pointer via @code{fdopen}.  If the
 operating system supports it, ensure that the stream is setup to avoid
@@ -432,7 +299,7 @@ Ignores case when performing the comparison.
 @end deftypefn
 
 @c fopen_unlocked.c:39
-@deftypefn Extension FILE * fopen_unlocked (const char *@var{path}, const char * @var{mode})
+@deftypefn Extension {FILE *} fopen_unlocked (const char *@var{path}, const char * @var{mode})
 
 Opens and returns a @code{FILE} pointer via @code{fopen}.  If the
 operating system supports it, ensure that the stream is setup to avoid
@@ -452,7 +319,7 @@ itself.
 @end deftypefn
 
 @c fopen_unlocked.c:57
-@deftypefn Extension FILE * freopen_unlocked (const char * @var{path}, const char * @var{mode}, FILE * @var{stream})
+@deftypefn Extension {FILE *} freopen_unlocked (const char * @var{path}, const char * @var{mode}, FILE * @var{stream})
 
 Opens and returns a @code{FILE} pointer via @code{freopen}.  If the
 operating system supports it, ensure that the stream is setup to avoid
@@ -781,14 +648,14 @@ reading and writing.
 
 @end deftypefn
 
-@c pexecute.txh:155
+@c pexecute.txh:169
 @deftypefn Extension void pex_free (struct pex_obj @var{obj})
 
 Clean up and free all data associated with @var{obj}.
 
 @end deftypefn
 
-@c pexecute.txh:131
+@c pexecute.txh:144
 @deftypefn Extension int pex_get_status (struct pex_obj *@var{obj}, int @var{count}, int *@var{vector})
 
 Returns the exit status of all programs run using @var{obj}.
@@ -798,7 +665,7 @@ to @code{pex_run}.  Returns 0 on error, 1 on success.
 
 @end deftypefn
 
-@c pexecute.txh:140
+@c pexecute.txh:153
 @deftypefn Extension int pex_get_times (struct pex_obj *@var{obj}, int @var{count}, struct pex_time *@var{vector})
 
 Returns the process execution times of all programs run using
@@ -807,15 +674,61 @@ results will be placed into @var{vector}.  The results are in the
 order of the calls to @code{pex_run}.  Returns 0 on error, 1 on
 success.
 
-@code{struct pex_time} has the following fields: @code{user_seconds},
+@code{struct pex_time} has the following fields of the type
+@code{unsigned long}: @code{user_seconds},
 @code{user_microseconds}, @code{system_seconds},
 @code{system_microseconds}.  On systems which do not support reporting
 process times, all the fields will be set to @code{0}.
 
 @end deftypefn
 
-@c pexecute.txh:119
-@deftypefn Extension FILE * pex_read_output (struct pex_obj *@var{obj}, int @var{binary})
+@c pexecute.txh:1
+@deftypefn Extension {struct pex_obj *} pex_init (int @var{flags}, const char *@var{pname}, const char *@var{tempbase})
+
+Prepare to execute one or more programs, with standard output of each
+program fed to standard input of the next.  This is a system
+independent interface to execute a pipeline.
+
+@var{flags} is a bitwise combination of the following:
+
+@table @code
+
+@vindex PEX_RECORD_TIMES
+@item PEX_RECORD_TIMES
+Record subprocess times if possible.
+
+@vindex PEX_USE_PIPES
+@item PEX_USE_PIPES
+Use pipes for communication between processes, if possible.
+
+@vindex PEX_SAVE_TEMPS
+@item PEX_SAVE_TEMPS
+Don't delete temporary files used for communication between
+processes.
+
+@end table
+
+@var{pname} is the name of program to be executed, used in error
+messages.  @var{tempbase} is a base name to use for any required
+temporary files; it may be @code{NULL} to use a randomly chosen name.
+
+@end deftypefn
+
+@c pexecute.txh:175
+@deftypefn Extension {const char *} pex_one (int @var{flags}, const char *@var{executable}, char * const *@var{argv}, const char *@var{pname}, const char *@var{outname}, const char *@var{errname}, int *@var{status}, int *@var{err})
+
+An interface to permit the easy execution of a
+single program.  The return value and most of the parameters are as
+for a call to @code{pex_run}.  @var{flags} is restricted to a
+combination of @code{PEX_SEARCH}, @code{PEX_STDERR_TO_STDOUT}, and
+@code{PEX_BINARY_OUTPUT}.  @var{outname} is interpreted as if
+@code{PEX_LAST} were set.  On a successful return, @code{*@var{status}} will
+be set to the exit status of the program.
+
+@end deftypefn
+
+@c pexecute.txh:132
+@deftypefn Extension {FILE *} pex_read_output (struct pex_obj *@var{obj}, int @var{binary})
 
 Returns a @code{FILE} pointer which may be used to read the standard
 output of the last program in the pipeline.  When this is used,
@@ -827,7 +740,108 @@ it will be closed by @code{pex_free}.
 
 @end deftypefn
 
-@c pexecute.txh:173
+@c pexecute.txh:32
+@deftypefn Extension {const char *} pex_run (struct pex_obj *@var{obj}, int @var{flags}, const char *@var{executable}, char * const *@var{argv}, const char *@var{outname}, const char *@var{errname}, int *@var{err})
+
+Execute one program in a pipeline.  On success this returns
+@code{NULL}.  On failure it returns an error message, a statically
+allocated string.
+
+@var{obj} is returned by a previous call to @code{pex_init}.
+
+@var{flags} is a bitwise combination of the following:
+
+@table @code
+
+@vindex PEX_LAST
+@item PEX_LAST
+This must be set on the last program in the pipeline.  In particular,
+it should be set when executing a single program.  The standard output
+of the program will be sent to @var{outname}, or, if @var{outname} is
+@code{NULL}, to the standard output of the calling program.  Do @emph{not}
+set this bit if you want to call @code{pex_read_output}
+(described below).  After a call to @code{pex_run} with this bit set,
+@var{pex_run} may no longer be called with the same @var{obj}.
+
+@vindex PEX_SEARCH
+@item PEX_SEARCH
+Search for the program using the user's executable search path.
+
+@vindex PEX_SUFFIX
+@item PEX_SUFFIX
+@var{outname} is a suffix.  See the description of @var{outname},
+below.
+
+@vindex PEX_STDERR_TO_STDOUT
+@item PEX_STDERR_TO_STDOUT
+Send the program's standard error to standard output, if possible.
+
+@vindex PEX_BINARY_INPUT
+@vindex PEX_BINARY_OUTPUT
+@item PEX_BINARY_INPUT
+@itemx PEX_BINARY_OUTPUT
+The standard input (output) of the program should be read (written) in
+binary mode rather than text mode.  These flags are ignored on systems
+which do not distinguish binary mode and text mode, such as Unix.  For
+proper behavior these flags should match appropriately---a call to
+@code{pex_run} using @code{PEX_BINARY_OUTPUT} should be followed by a
+call using @code{PEX_BINARY_INPUT}.
+@end table
+
+@var{executable} is the program to execute.  @var{argv} is the set of
+arguments to pass to the program; normally @code{@var{argv}[0]} will
+be a copy of @var{executable}.
+
+@var{outname} is used to set the name of the file to use for standard
+output.  There are two cases in which no output file will be used:
+
+@enumerate
+@item
+if @code{PEX_LAST} is not set in @var{flags}, and @code{PEX_USE_PIPES}
+was set in the call to @code{pex_init}, and the system supports pipes
+
+@item
+if @code{PEX_LAST} is set in @var{flags}, and @var{outname} is
+@code{NULL}
+@end enumerate
+
+@noindent
+Otherwise the code will use a file to hold standard
+output.  If @code{PEX_LAST} is not set, this file is considered to be
+a temporary file, and it will be removed when no longer needed, unless
+@code{PEX_SAVE_TEMPS} was set in the call to @code{pex_init}.
+
+There are two cases to consider when setting the name of the file to
+hold standard output.
+
+@enumerate
+@item
+@code{PEX_SUFFIX} is set in @var{flags}.  In this case
+@var{outname} may not be @code{NULL}.  If the @var{tempbase} parameter
+to @code{pex_init} was not @code{NULL}, then the output file name is
+the concatenation of @var{tempbase} and @var{outname}.  If
+@var{tempbase} was @code{NULL}, then the output file name is a random
+file name ending in @var{outname}.
+
+@item
+@code{PEX_SUFFIX} was not set in @var{flags}.  In this
+case, if @var{outname} is not @code{NULL}, it is used as the output
+file name.  If @var{outname} is @code{NULL}, and @var{tempbase} was
+not NULL, the output file name is randomly chosen using
+@var{tempbase}.  Otherwise the output file name is chosen completely
+at random.
+@end enumerate
+
+@var{errname} is the file name to use for standard error output.  If
+it is @code{NULL}, standard error is the same as the caller's.
+Otherwise, standard error is written to the named file.
+
+On an error return, the code sets @code{*@var{err}} to an @code{errno}
+value, or to 0 if there is no relevant @code{errno}.
+
+@end deftypefn
+
+@c pexecute.txh:187
 @deftypefn Extension int pexecute (const char *@var{program}, char * const *@var{argv}, const char *@var{this_pname}, const char *@var{temp_base}, char **@var{errmsg_fmt}, char **@var{errmsg_arg}, int flags)
 
 This is the old interface to execute one or more programs.  It is
@@ -855,7 +869,7 @@ name is unset/removed.
 
 @end deftypefn
 
-@c pexecute.txh:181
+@c pexecute.txh:195
 @deftypefn Extension int pwait (int @var{pid}, int *@var{status}, int @var{flags})
 
 Another part of the old execution interface.