[gcc(refs/users/marxin/heads/PR97193-mangled-gcno-files)] GCOV: do not mangle .gcno files.

[gcc(refs/users/marxin/heads/PR97193-mangled-gcno-files)] GCOV: do not mangle .gcno files.

[Martin Liska]

https://gcc.gnu.org/g:a457b0faeaaa2e08ecab4ef9768b54c0de008094

commit a457b0faeaaa2e08ecab4ef9768b54c0de008094
Author: Martin Liska <mliska@suse.cz>
Date:   Fri Sep 25 10:53:26 2020 +0200

    GCOV: do not mangle .gcno files.
    
    gcc/ChangeLog:
    
            PR gcov-profile/97193
            * coverage.c (coverage_init): GCDA note files should not be
            mangled and should end in output directory.

Diff:
---
 gcc/coverage.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/gcc/coverage.c b/gcc/coverage.c
index f353c9c5022..7711412c3be 100644
--- a/gcc/coverage.c
+++ b/gcc/coverage.c
@@ -1206,6 +1206,8 @@ coverage_obj_finish (vec<constructor_elt, va_gc> *ctor)
 void
 coverage_init (const char *filename)
 {
+  const char *original_filename = filename;
+  int original_len = strlen (original_filename);
 #if HAVE_DOS_BASED_FILE_SYSTEM
   const char *separator = "\\";
 #else
@@ -1277,9 +1279,9 @@ coverage_init (const char *filename)
 	bbg_file_name = xstrdup (profile_note_location);
       else
 	{
-	  bbg_file_name = XNEWVEC (char, len + strlen (GCOV_NOTE_SUFFIX) + 1);
-	  memcpy (bbg_file_name, filename, len);
-	  strcpy (bbg_file_name + len, GCOV_NOTE_SUFFIX);
+	  bbg_file_name = XNEWVEC (char, original_len + strlen (GCOV_NOTE_SUFFIX) + 1);
+	  memcpy (bbg_file_name, original_filename, original_len);
+	  strcpy (bbg_file_name + original_len, GCOV_NOTE_SUFFIX);
 	}
 
       if (!gcov_open (bbg_file_name, -1))