Remove .gcno file when compilation does not success (PR driver/56469).

2017-04-28  Martin Liska  <mliska@suse.cz>

	PR driver/56469
	* coverage.c (coverage_remove_note_file): New function.
	* coverage.h: Declare the function.
	* toplev.c (finalize): Clean if an error has been seen.

From-SVN: r247371

gcc/ChangeLog

 2017-04-28  Martin Liska  <mliska@suse.cz>
 
+	PR driver/56469
+	* coverage.c (coverage_remove_note_file): New function.
+	* coverage.h: Declare the function.
+	* toplev.c (finalize): Clean if an error has been seen.
+
+2017-04-28  Martin Liska  <mliska@suse.cz>
+
 	PR gcov-profile/80031
 	* gcov-dump.c (tag_blocks): Just print number of basic blocks.
 	* gcov-io.h (GCOV_TAG_BLOCKS_NUM): Remove unused macro.

gcc/coverage.c

@@ -731,6 +731,18 @@ coverage_end_function (unsigned lineno_checksum, unsigned cfg_checksum)
     }
 }
 
+/* Remove coverage file if opened.  */
+
+void
+coverage_remove_note_file (void)
+{
+  if (bbg_file_name)
+    {
+      gcov_close ();
+      unlink (bbg_file_name);
+    }
+}
+
 /* Build a coverage variable of TYPE for function FN_DECL.  If COUNTER
    >= 0 it is a counter array, otherwise it is the function structure.  */
 

gcc/coverage.h

@@ -24,6 +24,7 @@ along with GCC; see the file COPYING3.  If not see
 
 extern void coverage_init (const char *);
 extern void coverage_finish (void);
+extern void coverage_remove_note_file (void);
 
 /* Start outputting coverage information for the current
    function.  */

gcc/toplev.c

@@ -1915,6 +1915,9 @@ finalize (bool no_backend)
       stack_usage_file = NULL;
     }
 
+  if (seen_error ())
+    coverage_remove_note_file ();
+
   if (!no_backend)
     {
       statistics_fini ();