Avoid doing logging in signal-handlers. Bug 1007

2 files changed, 13 insertions, 1 deletions

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index e381157bc..e5873f349 100644
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -32736,10 +32736,15 @@ code. The incident is logged on the main and reject logs.
 .section "Building Exim to use a local scan function" "SECID207"
 .cindex "&[local_scan()]& function" "building Exim to use"
 To make use of the local scan function feature, you must tell Exim where your
-function is before building Exim, by setting LOCAL_SCAN_SOURCE in your
+function is before building Exim, by setting
+.new
+both HAVE_LOCAL_SCAN and
+.wen
+LOCAL_SCAN_SOURCE in your
 &_Local/Makefile_&. A recommended place to put it is in the &_Local_&
 directory, so you might set
 .code
+HAVE_LOCAL_SCAN=yes
 LOCAL_SCAN_SOURCE=Local/local_scan.c
 .endd
 for example. The function must be called &[local_scan()]&. It is called by
diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index 94f6fdefc..bceb22cc3 100644
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -8,6 +8,13 @@ options, and new features, see the NewStuff file next to this ChangeLog.
 Exim version 4.92
 -----------------
 
+JH/01 Remove code calling the customisable local_scan function, unless a new
+      definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
+
+JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
+      non-signal-safe funxtions being used.
+
+
 Exim version 4.91
 -----------------