merge from gcc

libiberty/ChangeLog

@@ -1,3 +1,11 @@
+2006-03-12  Jim Blandy  <jimb@red-bean.com>
+
+	* pex-common.h (struct pex_obj): Doc fixes.
+
+2006-03-11  Jim Blandy  <jimb@red-bean.com>
+
+	* functions.texi: Regenerate.
+
 2006-02-21  Ben Elliston  <bje@au.ibm.com>
 
 	* pexecute.c (pwait): Syntax fix for previous change.

libiberty/functions.texi

@@ -214,6 +214,26 @@ symbolic name or message.
 
 @end deftypefn
 
+@c argv.c:293
+@deftypefn Extension void expandargv (int *@var{argcp}, char ***@var{argvp})
+
+The @var{argcp} and @code{argvp} arguments are pointers to the usual
+@code{argc} and @code{argv} arguments to @code{main}.  This function
+looks for arguments that begin with the character @samp{@@}.  Any such
+arguments are interpreted as ``response files''.  The contents of the
+response file are interpreted as additional command line options.  In
+particular, the file is separated into whitespace-separated strings;
+each such string is taken as a command-line option.  The new options
+are inserted in place of the option naming the response file, and
+@code{*argcp} and @code{*argvp} will be updated.  If the value of
+@code{*argvp} is modified by this function, then the new value has
+been dynamically allocated and can be deallocated by the caller with
+@code{freeargv}.  However, most callers will simply call
+@code{expandargv} near the beginning of @code{main} and allow the
+operating system to free the memory when the program exits.
+
+@end deftypefn
+
 @c fdmatch.c:23
 @deftypefn Extension int fdmatch (int @var{fd1}, int @var{fd2})
 
@@ -1194,7 +1214,7 @@ translation is found, returns 0.
 
 @end deftypefn
 
-@c strverscmp.c:24
+@c strverscmp.c:25
 @deftypefun int strverscmp (const char *@var{s1}, const char *@var{s2})
 The @code{strverscmp} function compares the string @var{s1} against
 @var{s2}, considering them as holding indices/version numbers.  Return

libiberty/pex-common.h

@@ -61,7 +61,7 @@ struct pex_obj
   int next_input_name_allocated;
   /* Number of child processes.  */
   int count;
-  /* PIDs of child processes; array allocated using maloc.  */
+  /* PIDs of child processes; array allocated using malloc.  */
   long *children;
   /* Exit statuses of child processes; array allocated using malloc.  */
   int *status;
@@ -88,10 +88,11 @@ struct pex_funcs
 {
   /* Open file NAME for reading.  If BINARY is non-zero, open in
      binary mode.  Return >= 0 on success, -1 on error.  */
-  int (*open_read) (struct pex_obj *, const char *name, int binary);
+  int (*open_read) (struct pex_obj *, const char */* name */, int /* binary */);
   /* Open file NAME for writing.  If BINARY is non-zero, open in
      binary mode.  Return >= 0 on success, -1 on error.  */
-  int (*open_write) (struct pex_obj *, const char *name, int binary);
+  int (*open_write) (struct pex_obj *, const char */* name */,
+                     int /* binary */);
   /* Execute a child process.  FLAGS, EXECUTABLE, ARGV, ERR are from
      pex_run.  IN, OUT, ERRDES are each a descriptor, from open_read,
      open_write, or pipe, or they are one of STDIN_FILE_NO,
@@ -99,25 +100,27 @@ struct pex_funcs
      should be closed.  The function should handle the
      PEX_STDERR_TO_STDOUT flag.  Return >= 0 on success, or -1 on
      error and set *ERRMSG and *ERR.  */
-  long (*exec_child) (struct pex_obj *, int flags, const char *executable,
-		      char * const * argv, int in, int out, int errdes,
-		      const char **errmsg, int *err);
+  long (*exec_child) (struct pex_obj *, int /* flags */,
+                      const char */* executable */, char * const * /* argv */,
+                      int /* in */, int /* out */, int /* errdes */,
+		      const char **/* errmsg */, int */* err */);
   /* Close a descriptor.  Return 0 on success, -1 on error.  */
   int (*close) (struct pex_obj *, int);
   /* Wait for a child to complete, returning exit status in *STATUS
      and time in *TIME (if it is not null).  CHILD is from fork.  DONE
      is 1 if this is called via pex_free.  ERRMSG and ERR are as in
      fork.  Return 0 on success, -1 on error.  */
-  int (*wait) (struct pex_obj *, long, int *status, struct pex_time *time,
-	       int done, const char **errmsg, int *err);
+  int (*wait) (struct pex_obj *, long /* child */, int * /* status */,
+               struct pex_time * /* time */, int /* done */,
+               const char ** /* errmsg */, int * /* err */);
   /* Create a pipe (only called if PEX_USE_PIPES is set) storing two
-     descriptin in *P.  If BINARY is non-zero, open in binary mode.
-     Return 0 on success, -1 on error.  */
-  int (*pipe) (struct pex_obj *, int *p, int binary);
+     descriptors in P[0] and P[1].  If BINARY is non-zero, open in
+     binary mode.  Return 0 on success, -1 on error.  */
+  int (*pipe) (struct pex_obj *, int * /* p */, int /* binary */);
   /* Get a FILE pointer to read from a file descriptor (only called if
      PEX_USE_PIPES is set).  If BINARY is non-zero, open in binary
      mode.  Return pointer on success, NULL on error.  */
-  FILE * (*fdopenr) (struct pex_obj *, int fd, int binary);
+  FILE * (*fdopenr) (struct pex_obj *, int /* fd */, int /* binary */);
   /* Free any system dependent data associated with OBJ.  May be
      NULL if there is nothing to do.  */
   void (*cleanup) (struct pex_obj *);