1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/libgcov.c b/gcc/libgcov.c
index 7d1f6d0..b39ef49 100644
--- a/gcc/libgcov.c
+++ b/gcc/libgcov.c
@@ -283,8 +283,9 @@ gcov_exit (void)
 	      }
         }
       /* Update complete filename with stripped original. */
-      if (!IS_DIR_SEPARATOR (*fname) && !HAS_DRIVE_SPEC(fname))
-	{
+      if (prefix_length != 0 && !IS_DIR_SEPARATOR (*fname))
+        {
+          /* If prefix is given, add directory separator.  */
 	  strcpy (gi_filename_up, "/");
 	  strcpy (gi_filename_up + 1, fname);
 	}