- Avoid passing NULL as argument to %s in printf call

ltrace-0.7.91-null.patch

@@ -0,0 +1,14 @@
+diff --git a/output.c b/output.c
+index 7cab383..18f9cf0 100644
+--- a/output.c
++++ b/output.c
+@@ -598,6 +598,9 @@ frame_callback (Dwfl_Frame *state, void *arg)
+ 					   NULL, NULL, NULL);
+ 		symname = dwfl_module_addrinfo(mod, pc, &off, &sym,
+ 					       NULL, NULL, NULL);
++	} else {
++		modname = "unknown";
++		symname = "unknown";
+ 	}
+ 
+ 	/* This mimics the output produced by libunwind below.  */

ltrace.spec

@@ -1,7 +1,7 @@
 Summary: Tracks runtime library calls from dynamically linked executables
 Name: ltrace
 Version: 0.7.91
-Release: 28%{?dist}
+Release: 29%{?dist}
 URL: http://ltrace.alioth.debian.org/
 License: GPLv2+
 Group: Development/Debuggers
@@ -106,6 +106,9 @@ Patch27: ltrace-rh1423913.patch
 # AARCH64 large parameters and syscall testsuite fixes.
 Patch28: ltrace-0.7.91-aarch64-params.patch
 
+# gcc-9 fix.  Avoid passing NULL as argument to %s
+Patch29: ltrace-0.7.91-null.patch
+
 %description
 Ltrace is a debugging program which runs a specified command until the
 command exits.  While the command is executing, ltrace intercepts and
@@ -146,6 +149,7 @@ execution of processes.
 %patch26 -p1
 %patch27 -p1
 %patch28 -p1
+%patch29 -p1
 
 %build
 autoreconf -i
@@ -170,6 +174,9 @@ echo ====================TESTING END=====================
 %{_datadir}/ltrace
 
 %changelog
+* Wed Jan 16 2019 Jeff Law <law@redhat.com> - 0.7.91-29
+- Avoid passing NULL as argument to %s in printf call
+
 * Fri Jul 13 2018 Fedora Release Engineering <releng@fedoraproject.org> - 0.7.91-28
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_29_Mass_Rebuild