* src/lread.c (READ_AND_BUFFER): Reject negative chars (bug#73914).

(cherry picked from commit 681f70ea04a30bb43bb87448a6d71458d773d247)

diff --git a/src/lread.c b/src/lread.c
index 95c6891c205390a4cc74bb66d3baa5cb3c15c011..ea0398196e38e248e6d3be9fdfdd3bd67ff72783 100644 (file)
--- a/src/lread.c
+++ b/src/lread.c
@@ -3911,6 +3911,8 @@ read_stack_reset (intmax_t sp)
 
 #define READ_AND_BUFFER(c)                     \
   c = READCHAR;                                        \
+  if (c < 0)                                   \
+    INVALID_SYNTAX_WITH_BUFFER ();             \
   if (multibyte)                               \
     p += CHAR_STRING (c, (unsigned char *) p); \
   else                                         \