Fix $regex<n> use-after-free. Bug 2915

[exim.git] / src / src / globals.c

diff --git a/src/src/globals.c b/src/src/globals.c
index c95d24b4743aadf90a3aa01497ce9870497ced5a..cafb1599229de9eae20615c5ffcb7b4e122d9ec2 100644 (file)
--- a/src/src/globals.c
+++ b/src/src/globals.c
@@ -1016,6 +1016,10 @@ uschar *keep_environment       = NULL;
 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 
 uschar *eldap_dn               = NULL;
+const uschar *letter_digit_hyphen_dot =
+    US"abcdefghijklmnopqrstuvwxyz"
+      ".-0123456789"
+      "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 #ifdef EXPERIMENTAL_ESMTP_LIMITS
 uschar *limits_advertise_hosts = US"*";
 #endif
@@ -1320,7 +1324,7 @@ const pcre2_code *regex_EARLY_PIPE   = NULL;
 int    regex_cachesize              = 0;
 const pcre2_code *regex_ismsgid      = NULL;
 const pcre2_code *regex_smtp_code    = NULL;
-const uschar *regex_vars[REGEX_VARS];
+const uschar *regex_vars[REGEX_VARS] = { 0 };;
 #ifdef WHITELIST_D_MACROS
 const pcre2_code *regex_whitelisted_macro = NULL;
 #endif