Revert revision 217149 because it breaks Ada:

gcc/testsuite/ChangeLog:

2014-11-05  Anthony Brandon  <anthony.brandon@gmail.com>

        PR driver/36312
        * gcc.misc-tests/output.exp: New test case for identical input and
        output files.

include/ChangeLog:

2014-11-05  Anthony Brandon  <anthony.brandon@gmail.com>

        PR driver/36312
        * filenames.h: Add prototype for canonical_filename_eq.

gcc/ChangeLog:

2014-11-05  Anthony Brandon  <anthony.brandon@gmail.com>

        PR driver/36312
        * diagnostic-core.h: Add prototype for fatal_error.
        * diagnostic.c (fatal_error): New function fatal_error.
        * gcc.c (store_arg): Remove have_o_argbuf_index.
        (process_command): Check if input and output files are the same.
        * toplev.c (init_asm_output): Check if input and output files are
        the same.

libiberty/ChangeLog:

2014-11-05  Anthony Brandon  <anthony.brandon@gmail.com>

        PR driver/36312
        * filename_cmp.c (canonical_filename_eq): New function to check if
        file names are the same.
        * functions.texi: Updated with documentation for new function.

From-SVN: r217159

3 files changed, 4 insertions, 50 deletions

diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index 738965c..ff06b18 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,10 +1,3 @@
-2014-11-05  Anthony Brandon  <anthony.brandon@gmail.com>
-
-	PR driver/36312
-	* filename_cmp.c (canonical_filename_eq): New function to check if
-	file names are the same.
-	* functions.texi: Updated with documentation for new function.
-
 2014-11-05  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	* sigsetmask.c (_POSIX_SOURCE): Remove.
diff --git a/libiberty/filename_cmp.c b/libiberty/filename_cmp.c
index 150488c..9e16d24 100644
--- a/libiberty/filename_cmp.c
+++ b/libiberty/filename_cmp.c
@@ -24,13 +24,8 @@
 #include <string.h>
 #endif
 
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-
 #include "filenames.h"
 #include "safe-ctype.h"
-#include "libiberty.h"
 
 /*
 
@@ -195,27 +190,3 @@ filename_eq (const void *s1, const void *s2)
   /* The casts are for -Wc++-compat.  */
   return filename_cmp ((const char *) s1, (const char *) s2) == 0;
 }
-
-/*
-
-@deftypefn Extension int canonical_filename_eq (const char *@var{a}, const char *@var{b})
-
-Return non-zero if file names @var{a} and @var{b} are equivalent.
-This function compares the canonical versions of the filenames as returned by
-@code{lrealpath()}, so that so that different file names pointing to the same
-underlying file are treated as being identical.
-
-@end deftypefn
-
-*/
-
-int
-canonical_filename_eq (const char * a, const char * b)
-{
-  char * ca = lrealpath(a);
-  char * cb = lrealpath(b);
-  int res = filename_eq (ca, cb);
-  free (ca);
-  free (cb);
-  return res;
-}
diff --git a/libiberty/functions.texi b/libiberty/functions.texi
index 9ed9ff0..3627285 100644
--- a/libiberty/functions.texi
+++ b/libiberty/functions.texi
@@ -125,16 +125,6 @@ Uses @code{malloc} to allocate storage for @var{nelem} objects of
 
 @end deftypefn
 
-@c filename_cmp.c:201
-@deftypefn Extension int canonical_filename_eq (const char *@var{a}, const char *@var{b})
-
-Return non-zero if file names @var{a} and @var{b} are equivalent.
-This function compares the canonical versions of the filenames as returned by
-@code{lrealpath()}, so that so that different file names pointing to the same
-underlying file are treated as being identical.
-
-@end deftypefn
-
 @c choose-temp.c:45
 @deftypefn Extension char* choose_temp_base (void)
 
@@ -296,7 +286,7 @@ value 1).  If @var{valu} is zero, zero is returned.
 
 @end deftypefn
 
-@c filename_cmp.c:37
+@c filename_cmp.c:32
 @deftypefn Extension int filename_cmp (const char *@var{s1}, const char *@var{s2})
 
 Return zero if the two file names @var{s1} and @var{s2} are equivalent.
@@ -313,7 +303,7 @@ and backward slashes are equal.
 
 @end deftypefn
 
-@c filename_cmp.c:183
+@c filename_cmp.c:178
 @deftypefn Extension int filename_eq (const void *@var{s1}, const void *@var{s2})
 
 Return non-zero if file names @var{s1} and @var{s2} are equivalent.
@@ -321,7 +311,7 @@ This function is for use with hashtab.c hash tables.
 
 @end deftypefn
 
-@c filename_cmp.c:152
+@c filename_cmp.c:147
 @deftypefn Extension hashval_t filename_hash (const void *@var{s})
 
 Return the hash value for file name @var{s} that will be compared
@@ -330,7 +320,7 @@ This function is for use with hashtab.c hash tables.
 
 @end deftypefn
 
-@c filename_cmp.c:94
+@c filename_cmp.c:89
 @deftypefn Extension int filename_ncmp (const char *@var{s1}, const char *@var{s2}, size_t @var{n})
 
 Return zero if the two file names @var{s1} and @var{s2} are equivalent