https://bugs.exim.org/show_bug.cgi?id=3070
Bug ID: 3070
Summary: exim 4.97 crashes with SIGSEGV using option -oMt
Product: Exim
Version: 4.97
Hardware: x86-64
OS: Linux
Status: NEW
Severity: bug
Priority: medium
Component: General execution
Assignee: unallocated@???
Reporter: exim@???
CC: exim-dev@???
Exim 4.97 crashes while logging if invoked with option -oMt "". It works
without problems in exim 4.95 and logs "NULL" in this case.
Could be reproduced by:
swaks --pipe 'exim -bs -oMt ""' -f nobody@??? -t nobody@???
For me the following patch fixed the problem:
diff --git a/src/src/smtp_in.c b/src/src/smtp_in.c
index cdc457a39..ccd89858a 100644
--- a/src/src/smtp_in.c
+++ b/src/src/smtp_in.c
@@ -1352,7 +1352,7 @@ if (host_checking)
g = string_cat(g, hostname);
else if (f.sender_host_unknown || f.sender_host_notsocket)
- g = string_cat(g, sender_ident);
+ g = string_cat(g, sender_ident ? sender_ident : US"NULL");
else if (f.is_inetd)
g = string_append(g, 2, hostname, US" (via inetd)");
--
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