re PR gcov-profile/91971 (Profile directory concatenated with object file path)

2019-10-23  qing zhao  <qing.zhao@oracle.com>

	PR gcov-profile/91971
	* coverage.c (coverage_init): Mangle the full path of filename when
	filename is a absolute path.

From-SVN: r277344

gcc/ChangeLog

+2019-10-23  qing zhao  <qing.zhao@oracle.com>
+
+	PR gcov-profile/91971
+	* coverage.c (coverage_init): Mangle the full path of filename when
+	filename is a absolute path.
+
 2019-10-23  Jozef Lawrynowicz  <jozef.l@mittosystems.com>
 
 	* config/msp430/msp430-protos.h (msp430_has_hwmult): New.

gcc/coverage.c

@@ -1229,6 +1229,14 @@ coverage_init (const char *filename)
       else
 	profile_data_prefix = getpwd ();
     }
+  else
+    {
+      /* when filename is a absolute path, we also need to mangle the full
+      path of filename to prevent the profiling data being stored into a
+      different path than that specified by profile_data_prefix.  */
+      filename = mangle_path (filename);
+      len = strlen (filename);
+    }
 
   if (profile_data_prefix)
     prefix_len = strlen (profile_data_prefix);