Getting prepared for the next set of builds with an updated Fedora 27 system using gcc-7.2.1-2.fc27.x86_64, the following are the warnings dumped out. Feel free to close if this isn't important. I am not reporting that any of these create issues in my running Kamailio instance.

``` rtpengine.c: In function 'add_rtpengine_socks': rtpengine.c:778:24: warning: comparison between pointer and zero character constant [-Wpointer-compare] if (p1 != NULL && p1 != '\0') { ^~ rtpengine.c:778:21: note: did you mean to dereference the pointer? if (p1 != NULL && p1 != '\0') { ```

``` libsms_modem.c: In function 'initmodem': libsms_modem.c:230:36: warning: '%s' directive writing up to 128 bytes into a region of size 91 [-Wformat-overflow=] clen=sprintf(command,"AT+CPIN="%s"\r",mdm->pin); ^~ libsms_modem.c:230:8: note: 'sprintf' output between 12 and 140 bytes into a destination of size 100 clen=sprintf(command,"AT+CPIN="%s"\r",mdm->pin); ```

``` xhttp_rpc_fnc.c:188:18: warning: 'XHTTP_RPC_Post_1a' defined but not used [-Wunused-const-variable=] static const str XHTTP_RPC_Post_1a = str_init("\n"\ ^~~~~~~~~~~~~~~~~ xhttp_rpc_fnc.c:176:18: warning: 'XHTTP_RPC_ATTR_VAL_SEPARATOR' defined but not used [-Wunused-const-variable=] static const str XHTTP_RPC_ATTR_VAL_SEPARATOR = str_init("="); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ xhttp_rpc_fnc.c:175:18: warning: 'XHTTP_RPC_ATTR_SEPARATOR' defined but not used [-Wunused-const-variable=] static const str XHTTP_RPC_ATTR_SEPARATOR = str_init(" "); ^~~~~~~~~~~~~~~~~~~~~~~~ xhttp_rpc_fnc.c:174:18: warning: 'XHTTP_RPC_NODE_SEPARATOR' defined but not used [-Wunused-const-variable=] static const str XHTTP_RPC_NODE_SEPARATOR = str_init(":: "); ^~~~~~~~~~~~~~~~~~~~~~~~ ```

``` uac_reg.c: In function 'reg_ht_add': uac_reg.c:558:81: warning: ?: using integer constants in boolean context [-Wint-in-bool-context] uac_reg.c:502:13: p = p + ((bsize)?(bsize):(dst)->len) + 1; \ ~~~~~~~ uac_reg.c:558:81: reg_copy_shm(&nr->callid, &str_empty, reg_keep_callid ? UAC_REG_TM_CALLID_SIZE : 0); uac_reg.c:502:14: note: in definition of macro 'reg_copy_shm' p = p + ((bsize)?(bsize):(dst)->len) + 1; \ ^~~~~ ```

``` cr_fifo.c:64:12: warning: 'get_fifo_opts' declared 'static' but never defined [-Wunused-function] static int get_fifo_opts(str * buf, fifo_opt_t * opts, unsigned int opt_set[]); ^~~~~~~~~~~~~ cr_fifo.c:66:12: warning: 'update_route_data' declared 'static' but never defined [-Wunused-function] static int update_route_data(fifo_opt_t * opts); ^~~~~~~~~~~~~~~~~ cr_fifo.c:753:12: warning: 'update_route_data_recursor' defined but not used [-Wunused-function] static int update_route_data_recursor(struct dtrie_node_t *node, str * act_domain, fifo_opt_t * opts) { ^~~~~~~~~~~~~~~~~~~~~~~~~~ cr_fifo.c:78:12: warning: 'str_toklen' defined but not used [-Wunused-function] static int str_toklen(str * str, const char * delims) ^~~~~~~~~~ ```

``` authorize.c:158:12: warning: 'get_ha1' defined but not used [-Wunused-function] static int get_ha1(struct username* _username, str* _domain, ^~~~~~~ ```

``` java_msgobj.c: In function 'fill_sipmsg_object': java_msgobj.c:88:30: warning: passing argument 2 of '(*env)->SetIntField' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->SetIntField(env, SipMsgInstance, fid, msg->id); ^~~~~~~~~~~~~~ java_msgobj.c:88:30: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'struct _jobject **' java_msgobj.c:103:30: warning: passing argument 2 of '(*env)->SetIntField' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->SetIntField(env, SipMsgInstance, fid, msg->pid); ^~~~~~~~~~~~~~ java_iface.c: In function 'java_exec': java_iface.c:193:48: warning: passing argument 2 of '(*env)->NewLocalRef' from incompatible pointer type [-Wincompatible-pointer-types] invk_method_ref = (*env)->NewLocalRef(env, invk_method); ^~~~~~~~~~~ java_iface.c:193:48: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'jmethodID {aka struct _jmethodID *}' java_iface.c:193:21: warning: assignment from incompatible pointer type [-Wincompatible-pointer-types] invk_method_ref = (*env)->NewLocalRef(env, invk_method); ^ java_iface.c:197:30: warning: passing argument 2 of '(*env)->DeleteLocalRef' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->DeleteLocalRef(env, invk_method_ref); ^~~~~~~~~~~~~~~ java_iface.c:197:30: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'jmethodID {aka struct _jmethodID *}' java_iface.c:206:32: warning: passing argument 2 of '(*env)->MonitorEnter' from incompatible pointer type [-Wincompatible-pointer-types] if ((*env)->MonitorEnter(env, invk_method_ref) != JNI_OK) ^~~~~~~~~~~~~~~ java_iface.c:206:32: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'jmethodID {aka struct _jmethodID *}' java_iface.c:228:34: warning: passing argument 2 of '(*env)->DeleteLocalRef' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->DeleteLocalRef(env, invk_method_ref); ^~~~~~~~~~~~~~~ java_iface.c:228:34: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'jmethodID {aka struct _jmethodID *}' java_iface.c:229:34: warning: passing argument 2 of '(*env)->DeleteLocalRef' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->DeleteLocalRef(env, invk_method); ^~~~~~~~~~~ java_iface.c:229:34: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'jmethodID {aka struct _jmethodID *}' java_iface.c:251:30: warning: passing argument 2 of '(*env)->DeleteLocalRef' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->DeleteLocalRef(env, invk_method_ref); ^~~~~~~~~~~~~~~ java_iface.c:251:30: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'jmethodID {aka struct _jmethodID *}' java_iface.c:252:30: warning: passing argument 2 of '(*env)->DeleteLocalRef' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->DeleteLocalRef(env, invk_method); ^~~~~~~~~~~ java_iface.c:252:30: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'jmethodID {aka struct _jmethodID *}' java_iface.c:260:31: warning: passing argument 2 of '(*env)->MonitorExit' from incompatible pointer type [-Wincompatible-pointer-types] if ((*env)->MonitorExit(env, invk_method_ref) != JNI_OK) ^~~~~~~~~~~~~~~ java_iface.c:260:31: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'jmethodID {aka struct _jmethodID *}' java_iface.c:266:33: warning: passing argument 2 of '(*env)->DeleteLocalRef' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->DeleteLocalRef(env, invk_method_ref); ^~~~~~~~~~~~~~~ java_iface.c:266:33: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'jmethodID {aka struct _jmethodID *}' java_iface.c:267:33: warning: passing argument 2 of '(*env)->DeleteLocalRef' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->DeleteLocalRef(env, invk_method); ^~~~~~~~~~~ java_iface.c:267:33: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'jmethodID {aka struct _jmethodID *}' java_msgobj.c:103:30: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'struct _jobject **' app_java_mod.c: In function 'child_init': java_msgobj.c:119:33: warning: passing argument 2 of '(*env)->SetObjectField' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->SetObjectField(env, SipMsgInstance, fid, jStrParam); ^~~~~~~~~~~~~~ java_msgobj.c:119:33: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'struct _jobject **' app_java_mod.c:230:33: warning: passing argument 2 of '(*env)->DeleteLocalRef' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->DeleteLocalRef(env, child_init_id); ^~~~~~~~~~~~~ java_native_methods.c: In function 'Java_org_siprouter_SipMsg_ParseSipMsg': java_native_methods.c:478:12: warning: return from incompatible pointer type [-Wincompatible-pointer-types] return fill_sipmsg_object(jenv, msg); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ java_msgobj.c:136:33: warning: passing argument 2 of '(*env)->SetObjectField' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->SetObjectField(env, SipMsgInstance, fid, jStrParam); ^~~~~~~~~~~~~~ java_msgobj.c:136:33: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'struct _jobject **' java_msgobj.c:153:33: warning: passing argument 2 of '(*env)->SetObjectField' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->SetObjectField(env, SipMsgInstance, fid, jStrParam); ^~~~~~~~~~~~~~ app_java_mod.c:230:33: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'jmethodID {aka struct _jmethodID *}' java_msgobj.c:153:33: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'struct _jobject **' java_msgobj.c:169:30: warning: passing argument 2 of '(*env)->SetIntField' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->SetIntField(env, SipMsgInstance, fid, msg->len); ^~~~~~~~~~~~~~ java_msgobj.c:169:30: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'struct _jobject **' java_msgobj.c:185:33: warning: passing argument 2 of '(*env)->SetObjectField' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->SetObjectField(env, SipMsgInstance, fid, jStrParam); ^~~~~~~~~~~~~~ java_msgobj.c:185:33: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'struct _jobject **' java_msgobj.c:202:33: warning: passing argument 2 of '(*env)->SetObjectField' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->SetObjectField(env, SipMsgInstance, fid, jStrParam); ^~~~~~~~~~~~~~ java_msgobj.c:202:33: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'struct _jobject **' java_msgobj.c:218:30: warning: passing argument 2 of '(*env)->SetIntField' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->SetIntField(env, SipMsgInstance, fid, msg->parsed_orig_ruri_ok); ^~~~~~~~~~~~~~ java_msgobj.c:218:30: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'struct _jobject **' java_msgobj.c:234:33: warning: passing argument 2 of '(*env)->SetObjectField' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->SetObjectField(env, SipMsgInstance, fid, jStrParam); ^~~~~~~~~~~~~~ java_msgobj.c:234:33: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'struct _jobject **' java_msgobj.c:250:30: warning: passing argument 2 of '(*env)->SetIntField' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->SetIntField(env, SipMsgInstance, fid, msg->add_to_branch_len); ^~~~~~~~~~~~~~ java_msgobj.c:250:30: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'struct _jobject **' java_msgobj.c:265:30: warning: passing argument 2 of '(*env)->SetIntField' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->SetIntField(env, SipMsgInstance, fid, msg->hash_index); ^~~~~~~~~~~~~~ java_msgobj.c:265:30: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'struct _jobject **' java_msgobj.c:280:30: warning: passing argument 2 of '(*env)->SetIntField' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->SetIntField(env, SipMsgInstance, fid, msg->msg_flags); ^~~~~~~~~~~~~~ java_msgobj.c:280:30: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'struct _jobject **' java_msgobj.c:296:33: warning: passing argument 2 of '(*env)->SetObjectField' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->SetObjectField(env, SipMsgInstance, fid, jStrParam); ^~~~~~~~~~~~~~ java_msgobj.c:296:33: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'struct _jobject **' java_msgobj.c:313:33: warning: passing argument 2 of '(*env)->SetObjectField' from incompatible pointer type [-Wincompatible-pointer-types] (*env)->SetObjectField(env, SipMsgInstance, fid, jStrParam); ^~~~~~~~~~~~~~ java_msgobj.c:313:33: note: expected 'jobject {aka struct _jobject *}' but argument is of type 'struct _jobject **' ``` ``` mongodb_dbase.c: In function 'db_mongodb_query': mongodb_dbase.c:922:2: warning: 'mongoc_collection_find' is deprecated: Use mongoc_collection_find_with_opts instead [-Wdeprecated-declarations] mgcon->cursor = mongoc_collection_find (mgcon->collection, ^~~~~ In file included from /usr/include/libmongoc-1.0/mongoc-client.h:28:0, from /usr/include/libmongoc-1.0/mongoc.h:28, from mongodb_connection.h:26, from mongodb_dbase.c:27: /usr/include/libmongoc-1.0/mongoc-collection.h:145:1: note: declared here mongoc_collection_find (mongoc_collection_t *collection, ^~~~~~~~~~~~~~~~~~~~~~ ```

``` mongodb_client.c: In function 'mongodbc_exec_cmd': mongodb_client.c:290:4: warning: 'mongoc_collection_find' is deprecated: Use mongoc_collection_find_with_opts instead [-Wdeprecated-declarations] rpl->cursor = mongoc_collection_find (rpl->collection, ^~~ In file included from /usr/include/libmongoc-1.0/mongoc-client.h:28:0, from /usr/include/libmongoc-1.0/mongoc.h:28, from mongodb_client.h:25, from mongodb_client.c:34: /usr/include/libmongoc-1.0/mongoc-collection.h:145:1: note: declared here mongoc_collection_find (mongoc_collection_t *collection, ^~~~~~~~~~~~~~~~~~~~~~ ```

``` subscribe.c: In function 'reply_200': subscribe.c:340:6: warning: unused variable 'len' [-Wunused-variable] int len; ^~~ ```

``` In file included from /usr/include/python2.7/pyconfig.h:6:0, from /usr/include/python2.7/Python.h:8, from apy_kemi_export.c:30: /usr/include/python2.7/pyconfig-64.h:1202:0: warning: "_POSIX_C_SOURCE" redefined #define _POSIX_C_SOURCE 200112L

In file included from /usr/include/bits/libc-header-start.h:33:0, from /usr/include/stdio.h:27, from apy_kemi_export.c:26: /usr/include/features.h:260:0: note: this is the location of the previous definition # define _POSIX_C_SOURCE 200809L ```

``` In file included from /usr/include/python2.7/pyconfig.h:6:0, from /usr/include/python2.7/Python.h:8, from apy_kemi.c:25: /usr/include/python2.7/pyconfig-64.h:1202:0: warning: "_POSIX_C_SOURCE" redefined #define _POSIX_C_SOURCE 200112L

In file included from /usr/include/bits/libc-header-start.h:33:0, from /usr/include/stdio.h:27, from apy_kemi.c:21: /usr/include/features.h:260:0: note: this is the location of the previous definition # define _POSIX_C_SOURCE 200809L ```

``` sterman.c: In function 'extract_avp': sterman.c:77:60: warning: comparison between pointer and zero character constant [-Wpointer-compare] if (!q && p == vp->strvalue && vp->strvalue+sizeof(char) != '\0' ) { ^~ sterman.c:77:34: note: did you mean to dereference the pointer? if (!q && p == vp->strvalue && vp->strvalue+sizeof(char) != '\0' ) { ```

``` xhttp_pi_fnc.c:358:18: warning: 'XHTTP_PI_CODE_2' defined but not used [-Wunused-const-variable=] static const str XHTTP_PI_CODE_2 = str_init("</pre>"); ^~~~~~~~~~~~~~~ xhttp_pi_fnc.c:357:18: warning: 'XHTTP_PI_CODE_1' defined but not used [-Wunused-const-variable=] static const str XHTTP_PI_CODE_1 = str_init("<pre>"); ^~~~~~~~~~~~~~~ xhttp_pi_fnc.c:356:18: warning: 'XHTTP_PI_BREAK' defined but not used [-Wunused-const-variable=] static const str XHTTP_PI_BREAK = str_init("<br/>"); ^~~~~~~~~~~~~~ xhttp_pi_fnc.c:352:18: warning: 'XHTTP_PI_NODE_SEPARATOR' defined but not used [-Wunused-const-variable=] static const str XHTTP_PI_NODE_SEPARATOR = str_init(":: "); ^~~~~~~~~~~~~~~~~~~~~~~ xhttp_pi_fnc.c:351:18: warning: 'XHTTP_PI_NODE_INDENT' defined but not used [-Wunused-const-variable=] static const str XHTTP_PI_NODE_INDENT = str_init("\t"); ^~~~~~~~~~~~~~~~~~~~ xhttp_pi_fnc.c:348:18: warning: 'XHTTP_PI_SEMICOLON' defined but not used [-Wunused-const-variable=] static const str XHTTP_PI_SEMICOLON = str_init(" : "); ^~~~~~~~~~~~~~~~~~ ```

``` xode.c: In function 'xode_get_tag': xode.c:346:77: warning: comparison between pointer and zero character constant [-Wpointer-compare] if(parent == NULL || parent->firstchild == NULL || name == NULL || name == '\0') return NULL; ^~ xode.c:346:72: note: did you mean to dereference the pointer? if(parent == NULL || parent->firstchild == NULL || name == NULL || name == '\0') return NULL; ^ ```

``` xstream.c: In function '_xode_put_expatattribs': xstream.c:34:20: warning: comparison between pointer and zero character constant [-Wpointer-compare] while (atts[i] != '\0') ^~ xstream.c:34:12: note: did you mean to dereference the pointer? while (atts[i] != '\0') ^ xode_from.c: In function '_xode_put_expatattribs': xode_from.c:35:20: warning: comparison between pointer and zero character constant [-Wpointer-compare] while (atts[i] != '\0') ^~ xode_from.c:35:12: note: did you mean to dereference the pointer? while (atts[i] != '\0') ^ ```