diff -Nru db5.3-5.3.28+dfsg1/debian/build_signature_amd64.txt db5.3-5.3.28+dfsg1/debian/build_signature_amd64.txt
--- db5.3-5.3.28+dfsg1/debian/build_signature_amd64.txt	2019-02-26 07:57:29.000000000 +0000
+++ db5.3-5.3.28+dfsg1/debian/build_signature_amd64.txt	2020-09-15 15:07:12.000000000 +0000
@@ -1 +1 @@
-7e5b311c
+6b2fefb9
diff -Nru db5.3-5.3.28+dfsg1/debian/changelog db5.3-5.3.28+dfsg1/debian/changelog
--- db5.3-5.3.28+dfsg1/debian/changelog	2020-03-21 12:26:50.000000000 +0000
+++ db5.3-5.3.28+dfsg1/debian/changelog	2020-09-15 15:07:12.000000000 +0000
@@ -1,3 +1,12 @@
+db5.3 (5.3.28+dfsg1-0.6ubuntu3) groovy; urgency=medium
+
+  * Fix FTBFS due to multiple definitions of progname, switch one of them
+    to glibc provided program_invocation_name.
+  * Test-suite sh_list segfaults when db5.3 built with gcc-10, switch to
+    gcc-9.
+
+ -- Dimitri John Ledkov <xnox@ubuntu.com>  Tue, 15 Sep 2020 16:07:12 +0100
+
 db5.3 (5.3.28+dfsg1-0.6ubuntu2) focal; urgency=medium
 
   * No-change rebuild for libgcc-s1 package name change.
diff -Nru db5.3-5.3.28+dfsg1/debian/control db5.3-5.3.28+dfsg1/debian/control
--- db5.3-5.3.28+dfsg1/debian/control	2019-05-31 17:30:28.000000000 +0000
+++ db5.3-5.3.28+dfsg1/debian/control	2020-09-15 15:07:12.000000000 +0000
@@ -12,6 +12,7 @@
 	       tcl <cross !pkg.db5.3.notcl>,
 	       tcl-dev <!pkg.db5.3.notcl>,
 	       procps [!hurd-i386] <!nocheck>,
+           gcc-9, g++-9,
 	       javahelper <!nojava>,
 	       default-jdk <!nojava>
 Homepage: http://www.oracle.com/technetwork/database/database-technologies/berkeleydb/overview/index.html
diff -Nru db5.3-5.3.28+dfsg1/debian/patches/fix-ftbfs-multiple-progname.patch db5.3-5.3.28+dfsg1/debian/patches/fix-ftbfs-multiple-progname.patch
--- db5.3-5.3.28+dfsg1/debian/patches/fix-ftbfs-multiple-progname.patch	1970-01-01 00:00:00.000000000 +0000
+++ db5.3-5.3.28+dfsg1/debian/patches/fix-ftbfs-multiple-progname.patch	2020-09-15 15:07:12.000000000 +0000
@@ -0,0 +1,45 @@
+Description: Fix FTBFS due to multiple definitions of progname, switch one of them to glibc provided program_invocation_name.
+Author: Dimitri John Ledkov <xnox@ubuntu.com>
+
+
+--- db5.3-5.3.28+dfsg1.orig/test/c/cutest/Runner.c
++++ db5.3-5.3.28+dfsg1/test/c/cutest/Runner.c
+@@ -11,9 +11,11 @@
+  * It lets users run the entire suites (default), or choose individual
+  * suite(s), or individual tests.
+  */
++#define _GNU_SOURCE
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
++#include <errno.h>
+ 
+ #include "CuTest.h"
+ #include "db.h"
+@@ -26,7 +28,7 @@ int append_case(char **cases, int *num_c
+ int usage();
+ void CuTestAssertForDb(const char *msg, const char *file, int line);
+ 
+-const char *progname;
++extern char *program_invocation_name;
+ 
+ int main(int argc, char **argv)
+ {
+@@ -37,8 +39,6 @@ int main(int argc, char **argv)
+ 	int ch, failed, i, num_suites, num_tests, verbose;
+ 	char *test;
+ 
+-	progname = argv[0];
+-
+ 	num_suites = num_tests = verbose = 0;
+ 	while ((ch = getopt(argc, argv, "s:t:v")) != EOF)
+ 		switch (ch) {
+@@ -120,7 +120,7 @@ void CuTestAssertForDb(const char *msg,
+ int
+ usage()
+ {
+-	(void)fprintf(stderr, "usage: %s %s\n", progname,
++	(void)fprintf(stderr, "usage: %s %s\n", program_invocation_short_name,
+ 	    "[-s suite] [-t test] -v. Multiple test and suite args allowed.");
+ 	return (EXIT_FAILURE);
+ }
diff -Nru db5.3-5.3.28+dfsg1/debian/patches/series db5.3-5.3.28+dfsg1/debian/patches/series
--- db5.3-5.3.28+dfsg1/debian/patches/series	2019-05-31 17:30:28.000000000 +0000
+++ db5.3-5.3.28+dfsg1/debian/patches/series	2020-09-15 15:07:12.000000000 +0000
@@ -10,3 +10,4 @@
 009-java-10.patch
 010-__atomic_compare_exchange.patch
 CVE-2019-8457.patch
+fix-ftbfs-multiple-progname.patch
diff -Nru db5.3-5.3.28+dfsg1/debian/rules db5.3-5.3.28+dfsg1/debian/rules
--- db5.3-5.3.28+dfsg1/debian/rules	2019-02-26 07:57:29.000000000 +0000
+++ db5.3-5.3.28+dfsg1/debian/rules	2020-09-15 15:07:12.000000000 +0000
@@ -5,6 +5,10 @@
 # Published under the GNU GPL license
 # Partially based on previous work by Clint Adams
 #
+
+export CC=gcc-9
+export CXX=g++-9
+
 # Uncomment this to turn on verbose mode.
 export DH_VERBOSE=1