* xfns.c (syms_of_xfns): Use make_pure_string instead of build_string.

* xterm.c (syms_of_xterm):
* xfaces.c (syms_of_xfaces):
* xdisp.c (syms_of_xdisp):
* lread.c (syms_of_lread):
* keyboard.c (syms_of_keyboard): Use make_pure_c_string instead of
build_string.
* doc.c (Fsnarf_documentation): Purecopy Vbuild_files.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/doc.c b/src/doc.c
index dd933909f7a..30b909b8ce8 100644
--- a/src/doc.c
+++ b/src/doc.c
@@ -619,6 +619,7 @@ the same file name is found in the `doc-directory'.  */)
         if (len > 0)
           Vbuild_files = Fcons (make_string (beg, len), Vbuild_files);
       }
+    Vbuild_files = Fpurecopy (Vbuild_files);
   }
 
   fd = emacs_open (name, O_RDONLY, 0);