diff --git a/Makefile.am b/Makefile.am
index 40114a551..27d9f5af8 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -171,47 +171,47 @@ baseline.info:
 	$(LCOV) -c -i -d $(abs_builddir)/src -o $@
 
 baseline_filtered.info: baseline.info
-	$(LCOV) -r $< "/usr/include/*" -o $@
+	$(LCOV) -r $< "/usr/include/*" $(LCOV_OPTS) -o $@
 
 leveldb_baseline.info: baseline_filtered.info
 	$(LCOV) -c -i -d $(abs_builddir)/src/leveldb -b $(abs_builddir)/src/leveldb -o $@
 
 leveldb_baseline_filtered.info: leveldb_baseline.info
-	$(LCOV) -r $< "/usr/include/*" -o $@
+	$(LCOV) -r $< "/usr/include/*" $(LCOV_OPTS) -o $@
 
 baseline_filtered_combined.info: leveldb_baseline_filtered.info baseline_filtered.info
-	$(LCOV) -a leveldb_baseline_filtered.info -a baseline_filtered.info -o $@
+	$(LCOV) -a $(LCOV_OPTS) leveldb_baseline_filtered.info -a baseline_filtered.info -o $@
 
 test_bitcoin.info: baseline_filtered_combined.info
 	$(MAKE) -C src/ check
-	$(LCOV) -c -d $(abs_builddir)/src -t test_bitcoin -o $@
-	$(LCOV) -z -d $(abs_builddir)/src
-	$(LCOV) -z -d $(abs_builddir)/src/leveldb
+	$(LCOV) -c $(LCOV_OPTS) -d $(abs_builddir)/src -t test_bitcoin -o $@
+	$(LCOV) -z $(LCOV_OPTS) -d $(abs_builddir)/src
+	$(LCOV) -z $(LCOV_OPTS) -d $(abs_builddir)/src/leveldb
 
 test_bitcoin_filtered.info: test_bitcoin.info
-	$(LCOV) -r $< "/usr/include/*" -o $@
+	$(LCOV) -r $< "/usr/include/*" $(LCOV_OPTS) -o $@
 
 functional_test.info: test_bitcoin_filtered.info
-	-@TIMEOUT=15 python test/functional/test_runner.py $(EXTENDED_FUNCTIONAL_TESTS)
-	$(LCOV) -c -d $(abs_builddir)/src --t functional-tests -o $@
-	$(LCOV) -z -d $(abs_builddir)/src
-	$(LCOV) -z -d $(abs_builddir)/src/leveldb
+	-@TIMEOUT=15 test/functional/test_runner.py $(EXTENDED_FUNCTIONAL_TESTS)
+	$(LCOV) -c $(LCOV_OPTS) -d $(abs_builddir)/src --t functional-tests -o $@
+	$(LCOV) -z $(LCOV_OPTS) -d $(abs_builddir)/src
+	$(LCOV) -z $(LCOV_OPTS) -d $(abs_builddir)/src/leveldb
 
 functional_test_filtered.info: functional_test.info
-	$(LCOV) -r $< "/usr/include/*" -o $@
+	$(LCOV) -r $< "/usr/include/*" $(LCOV_OPTS) -o $@
 
 test_bitcoin_coverage.info: baseline_filtered_combined.info test_bitcoin_filtered.info
-	$(LCOV) -a baseline_filtered.info -a leveldb_baseline_filtered.info -a test_bitcoin_filtered.info -o $@
+	$(LCOV) -a $(LCOV_OPTS) baseline_filtered.info -a leveldb_baseline_filtered.info -a test_bitcoin_filtered.info -o $@
 
 total_coverage.info: baseline_filtered_combined.info test_bitcoin_filtered.info functional_test_filtered.info
-	$(LCOV) -a baseline_filtered.info -a leveldb_baseline_filtered.info -a test_bitcoin_filtered.info -a functional_test_filtered.info -o $@ | $(GREP) "\%" | $(AWK) '{ print substr($$3,2,50) "/" $$5 }' > coverage_percent.txt
+	$(LCOV) -a $(LCOV_OPTS) baseline_filtered.info -a leveldb_baseline_filtered.info -a test_bitcoin_filtered.info -a functional_test_filtered.info -o $@ | $(GREP) "\%" | $(AWK) '{ print substr($$3,2,50) "/" $$5 }' > coverage_percent.txt
 
 test_bitcoin.coverage/.dirstamp:  test_bitcoin_coverage.info
-	$(GENHTML) -s $< -o $(@D)
+	$(GENHTML) -s $(LCOV_OPTS) $< -o $(@D)
 	@touch $@
 
 total.coverage/.dirstamp: total_coverage.info
-	$(GENHTML) -s $< -o $(@D)
+	$(GENHTML) -s $(LCOV_OPTS) $< -o $(@D)
 	@touch $@
 
 cov: test_bitcoin.coverage/.dirstamp total.coverage/.dirstamp
diff --git a/configure.ac b/configure.ac
index 160be397b..0f6149ea6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -158,6 +158,12 @@ AC_ARG_ENABLE([lcov],
   [enable lcov testing (default is no)])],
   [use_lcov=yes],
   [use_lcov=no])
+  
+AC_ARG_ENABLE([lcov-branch-coverage],
+  [AS_HELP_STRING([--enable-lcov-branch-coverage],
+  [enable lcov testing branch coverage (default is no)])],
+  [use_lcov_branch=yes],
+  [use_lcov_branch=no])
 
 AC_ARG_ENABLE([glibc-back-compat],
   [AS_HELP_STRING([--enable-glibc-back-compat],
@@ -436,6 +442,12 @@ if test x$use_lcov = xyes; then
     [AC_MSG_ERROR("lcov testing requested but --coverage linker flag does not work")])
   AX_CHECK_COMPILE_FLAG([--coverage],[CXXFLAGS="$CXXFLAGS --coverage"],
     [AC_MSG_ERROR("lcov testing requested but --coverage flag does not work")])
+  AC_DEFINE(USE_COVERAGE, 1, [Define this symbol if coverage is enabled])
+  CXXFLAGS="$CXXFLAGS -Og"
+fi
+
+if test x$use_lcov_branch != xno; then
+  AC_SUBST(LCOV_OPTS, "$LCOV_OPTS --rc lcov_branch_coverage=1")
 fi
 
 dnl Check for endianness
diff --git a/src/util.h b/src/util.h
index 4386ddd55..a1c59bbd1 100644
--- a/src/util.h
+++ b/src/util.h
@@ -123,6 +123,17 @@ int LogPrintStr(const std::string &str);
 /** Get format string from VA_ARGS for error reporting */
 template<typename... Args> std::string FormatStringFromLogArgs(const char *fmt, const Args&... args) { return fmt; }
 
+static inline void MarkUsed() {}
+template<typename T, typename... Args> static inline void MarkUsed(const T& t, const Args&... args)
+{
+    (void)t;
+    MarkUsed(args...);
+}
+
+#ifdef USE_COVERAGE
+#define LogPrintf(...) do { MarkUsed(__VA_ARGS__); } while(0)
+#define LogPrint(category, ...) do { MarkUsed(__VA_ARGS__); } while(0)
+#else
 #define LogPrintf(...) do { \
     std::string _log_msg_; /* Unlikely name to avoid shadowing variables */ \
     try { \
@@ -139,6 +150,7 @@ template<typename... Args> std::string FormatStringFromLogArgs(const char *fmt,
         LogPrintf(__VA_ARGS__); \
     } \
 } while(0)
+#endif
 
 template<typename... Args>
 bool error(const char* fmt, const Args&... args)