https://bugs.exim.org/show_bug.cgi?id=2886
--- Comment #9 from Gedalya <gedalya@???> ---
--- exim4-4.96~RC0.orig/src/arc.c
+++ exim4-4.96~RC0/src/arc.c
@@ -90,7 +90,7 @@ typedef struct arc_ctx {
static time_t now;
static time_t expire;
-static hdr_rlist * headers_rlist;
+static hdr_rlist * headers_rlist = NULL;
static arc_ctx arc_sign_ctx = { NULL };
static arc_ctx arc_verify_ctx = { NULL };
Core was generated by `/usr/sbin/exim4 -q'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00005599b240c993 in arc_sign (signspec=<optimized out>,
sigheaders=0x5599b2fea580, errstr=errstr@entry=0x7ffeafba7af0) at
./b-exim4-daemon-custom/build-Linux-x86_64/arc.c:1663
1663 ./b-exim4-daemon-custom/build-Linux-x86_64/arc.c: No such file or
directory.
(gdb) set pagination off
(gdb) bt full
#0 0x00005599b240c993 in arc_sign (signspec=<optimized out>,
sigheaders=0x5599b2fea580, errstr=errstr@entry=0x7ffeafba7af0) at
./b-exim4-daemon-custom/build-Linux-x86_64/arc.c:1663
rp = 0x672e6c69616d3d48
identity = 0x5599b2fea8a8 "****.com"
selector = 0x5599b2fea8c8 "arc-20220506"
privkey = 0x5599b2bdc2f8 "-----BEGIN PRIVATE KEY-----\n"...
opts = 0x5599b2fea92a ""
s = <optimized out>
options = <optimized out>
sep = 58
headers = <optimized out>
rheaders = 0x5599b2fea950
ar = {data = <optimized out>, len = <optimized out>}
instance = <optimized out>
g = 0x0
b = <optimized out>
__FUNCTION__ = "arc_sign"
ret_sigheaders = <optimized out>
(gdb) p *rp
Cannot access memory at address 0x672e6c69616d3d48
(gdb) p headers_rlist
$1 = (hdr_rlist *) 0x5599b3177d78
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