gcov-io.h: Allow zero tag as EOF indicator.

	* gcov-io.h: Allow zero tag as EOF indicator.
	(gcov_is_eof): Remove.
	(gcov_truncate): Remove.
	* gcov-io.c (gcov_seek): Always SEEK_SET.
	* libgcov.c (gcov_exit): Don't use gcov_truncate.  Write explicit
	EOF tag.
	* coverage.c (read_counts_file): Don't use gcov_is_eof.
	* gcov-dump.c (dump_file): Likewise.
	* gcov.c (read_graph_file, read_count_file): Likewise.

From-SVN: r85291

1 files changed, 11 insertions, 16 deletions

diff --git a/gcc/gcov.c b/gcc/gcov.c
index c53c4f2..c988730 100644
--- a/gcc/gcov.c
+++ b/gcc/gcov.c
@@ -896,14 +896,12 @@ read_graph_file (void)
 	}
       gcov_sync (base, length);
       if (gcov_is_error ())
-	break;
-    }
-  if (!gcov_is_eof ())
-    {
-    corrupt:;
-      fnotice (stderr, "%s:corrupted\n", bbg_file_name);
-      gcov_close ();
-      return 1;
+	{
+	corrupt:;
+	  fnotice (stderr, "%s:corrupted\n", bbg_file_name);
+	  gcov_close ();
+	  return 1;
+	}
     }
   gcov_close ();
 
@@ -1055,14 +1053,11 @@ read_count_file (void)
 	}
       gcov_sync (base, length);
       if ((error = gcov_is_error ()))
-	break;
-    }
-
-  if (!gcov_is_eof ())
-    {
-      fnotice (stderr, error < 0 ? "%s:overflowed\n" : "%s:corrupted\n",
-	       da_file_name);
-      goto cleanup;
+	{
+	  fnotice (stderr, error < 0 ? "%s:overflowed\n" : "%s:corrupted\n",
+		   da_file_name);
+	  goto cleanup;
+	}
     }
 
   gcov_close ();