diff --git a/gcc5.rc2.patch b/gcc5.rc2.patch
new file mode 100644
index 0000000..8152337
--- /dev/null
+++ b/gcc5.rc2.patch
@@ -0,0 +1,125 @@
+diff --git a/channels/chan_sip.c b/channels/chan_sip.c
+index bd694ec..4c25ec2 100644
+--- a/channels/chan_sip.c
++++ b/channels/chan_sip.c
+@@ -9595,7 +9595,8 @@ static int parse_request(struct sip_request *req)
+ {
+ 	char *c = ast_str_buffer(req->data);
+ 	ptrdiff_t *dst = req->header;
+-	int i = 0, lim = SIP_MAX_HEADERS - 1;
++	int i = 0;
++	unsigned int lim = SIP_MAX_HEADERS - 1;
+ 	unsigned int skipping_headers = 0;
+ 	ptrdiff_t current_header_offset = 0;
+ 	char *previous_header = "";
+diff --git a/include/asterisk/inline_api.h b/include/asterisk/inline_api.h
+index d76dfa0..291a838 100644
+--- a/include/asterisk/inline_api.h
++++ b/include/asterisk/inline_api.h
+@@ -48,7 +48,7 @@
+ #if !defined(LOW_MEMORY) && !defined(DISABLE_INLINE)
+ 
+ #if !defined(AST_API_MODULE)
+-#if defined(__clang__)
++#if defined(__clang__) || defined(__GNUC_STDC_INLINE__)
+ #define AST_INLINE_API(hdr, body) static hdr; static inline hdr body
+ #else /* if defined(__clang__) */
+ #define AST_INLINE_API(hdr, body) hdr; extern inline hdr body
+diff --git a/main/ccss.c b/main/ccss.c
+index 7f63690..ff5739a 100644
+--- a/main/ccss.c
++++ b/main/ccss.c
+@@ -825,7 +825,7 @@ int ast_cc_set_param(struct ast_cc_config_params *params, const char * const nam
+ 		return 0;
+ 	}
+ 
+-	if (!sscanf(value, "%30u", &value_as_uint) == 1) {
++	if (sscanf(value, "%30u", &value_as_uint) != 1) {
+ 		return -1;
+ 	}
+ 
+diff --git a/main/dsp.c b/main/dsp.c
+index a329dbb..335fb3d 100644
+--- a/main/dsp.c
++++ b/main/dsp.c
+@@ -112,9 +112,11 @@ static struct progalias {
+ 	{ "uk", PROG_MODE_UK },
+ };
+ 
++#define FREQ_ARRAY_SIZE 7
++
+ static struct progress {
+ 	enum gsamp_size size;
+-	int freqs[7];
++	int freqs[FREQ_ARRAY_SIZE];
+ } modes[] = {
+ 	{ GSAMP_SIZE_NA, { 350, 440, 480, 620, 950, 1400, 1800 } },	/*!< North America */
+ 	{ GSAMP_SIZE_CR, { 425 } },					/*!< Costa Rica, Brazil */
+@@ -389,7 +391,7 @@ struct ast_dsp {
+ 	struct ast_dsp_busy_pattern busy_cadence;
+ 	int historicnoise[DSP_HISTORY];
+ 	int historicsilence[DSP_HISTORY];
+-	goertzel_state_t freqs[7];
++	goertzel_state_t freqs[FREQ_ARRAY_SIZE];
+ 	int freqcount;
+ 	int gsamps;
+ 	enum gsamp_size gsamp_size;
+@@ -1036,6 +1038,8 @@ static int __ast_dsp_call_progress(struct ast_dsp *dsp, short *s, int len)
+ 	int pass;
+ 	int newstate = DSP_TONE_STATE_SILENCE;
+ 	int res = 0;
++	int freqcount = dsp->freqcount > FREQ_ARRAY_SIZE ? FREQ_ARRAY_SIZE : dsp->freqcount;
++
+ 	while (len) {
+ 		/* Take the lesser of the number of samples we need and what we have */
+ 		pass = len;
+@@ -1045,7 +1049,7 @@ static int __ast_dsp_call_progress(struct ast_dsp *dsp, short *s, int len)
+ 		for (x = 0; x < pass; x++) {
+ 			samp = s[x];
+ 			dsp->genergy += (int32_t) samp * (int32_t) samp;
+-			for (y = 0; y < dsp->freqcount; y++) {
++			for (y = 0; y < freqcount; y++) {
+ 				goertzel_sample(&dsp->freqs[y], samp);
+ 			}
+ 		}
+@@ -1053,8 +1057,8 @@ static int __ast_dsp_call_progress(struct ast_dsp *dsp, short *s, int len)
+ 		dsp->gsamps += pass;
+ 		len -= pass;
+ 		if (dsp->gsamps == dsp->gsamp_size) {
+-			float hz[7];
+-			for (y = 0; y < 7; y++) {
++			float hz[FREQ_ARRAY_SIZE];
++			for (y = 0; y < FREQ_ARRAY_SIZE; y++) {
+ 				hz[y] = goertzel_result(&dsp->freqs[y]);
+ 			}
+ 			switch (dsp->progmode) {
+@@ -1642,7 +1646,7 @@ static void ast_dsp_prog_reset(struct ast_dsp *dsp)
+ 
+ 	dsp->gsamp_size = modes[dsp->progmode].size;
+ 	dsp->gsamps = 0;
+-	for (x = 0; x < ARRAY_LEN(modes[dsp->progmode].freqs); x++) {
++	for (x = 0; x < FREQ_ARRAY_SIZE; x++) {
+ 		if (modes[dsp->progmode].freqs[x]) {
+ 			goertzel_init(&dsp->freqs[x], (float)modes[dsp->progmode].freqs[x], dsp->sample_rate);
+ 			max = x + 1;
+@@ -1668,6 +1672,7 @@ static struct ast_dsp *__ast_dsp_new(unsigned int sample_rate)
+ 		dsp->digitmode = DSP_DIGITMODE_DTMF;
+ 		dsp->faxmode = DSP_FAXMODE_DETECT_CNG;
+ 		dsp->sample_rate = sample_rate;
++		dsp->freqcount = 0;
+ 		/* Initialize digit detector */
+ 		ast_digit_detect_init(&dsp->digit_state, dsp->digitmode & DSP_DIGITMODE_MF, dsp->sample_rate);
+ 		dsp->display_inband_dtmf_warning = 1;
+diff --git a/main/manager.c b/main/manager.c
+index 8fa1942..be780e7 100644
+--- a/main/manager.c
++++ b/main/manager.c
+@@ -4785,7 +4785,7 @@ static int action_atxfer(struct mansession *s, const struct message *m)
+ static int check_blacklist(const char *cmd)
+ {
+ 	char *cmd_copy, *cur_cmd;
+-	char *cmd_words[MAX_BLACKLIST_CMD_LEN] = { NULL, };
++	char *cmd_words[AST_MAX_CMD_LEN] = { NULL, };
+ 	int i;
+ 
+ 	cmd_copy = ast_strdupa(cmd);