*print.c (Fexternal_debugging_output): Use more-conservative overflow fix.

2 files changed, 3 insertions, 4 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index c288ed6a2ed..5b41db9831a 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -554,8 +554,7 @@
         Use ptrdiff_t, not int, to avoid needless 32-bit limit on 64-bit hosts.
         (PRINTPREPARE): Use int, not ptrdiff_t, where int is wide enough.
         (printchar, strout): Use xpalloc to catch size calculation overflow.
-        (Fexternal_debugging_output): Use CHECK_CHARACTER, not CHECK_NUMBER,
-        to avoid mishandling large integers.
+        (Fexternal_debugging_output): Don't overflow EMACS_INT->int conversion.
         (print_error_message): Use SAFE_ALLOCA, not alloca.
         (print_object): Use int, not EMACS_INT, where int is wide enough.
         * process.c (Fdelete_process): Don't assume pid fits into EMACS_INT.
diff --git a/src/print.c b/src/print.c
index 63ef3e6279e..f3302daaea3 100644
--- a/src/print.c
+++ b/src/print.c
@@ -716,8 +716,8 @@ You can call print while debugging emacs, and pass it this function
 to make it write to the debugging output.  */)
   (Lisp_Object character)
 {
-  CHECK_CHARACTER (character);
-  putc ((int) XINT (character), stderr);
+  CHECK_NUMBER (character);
+  putc (XINT (character) & 0xFF, stderr);
 
 #ifdef WINDOWSNT
   /* Send the output to a debugger (nothing happens if there isn't one).  */