More build fixes.

.travis.yml

@@ -317,9 +317,12 @@ before_script:
     fi
 script:
   - cd build
-  - if [ "$CXX" = "clang++-7" ] ; then build-wrapper-linux-x86-64 --out-dir bw-output make -j4 ; fi
+  - |
-  - if [ "$CXX" = "g++-8" ] ; then make -j4 ; fi
+    if [ "$CXX" = "clang++-7" ] ; then
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then make -j4 ; fi
+      build-wrapper-linux-x86-64 --out-dir bw-output make -j4 ;
+    else
+      make -j4 ;
+    fi
   - cd ../build-no-x11
   - make -j4
   - cd ..
@@ -331,4 +334,4 @@ sudo: false
 cache:
   - ccache: true
   - directories:
-    - '$HOME/.sonar/cache'
+      - "$HOME/.sonar/cache"

cmake/Conky.cmake

@@ -157,3 +157,27 @@ macro(AC_SEARCH_LIBS FUNCTION_NAME INCLUDES TARGET_VAR)
     endif(${AC_SEARCH_LIBS_TMP})
   endif("${TARGET_VAR}" MATCHES "^${TARGET_VAR}$")
 endmacro(AC_SEARCH_LIBS)
+
+
+# A function to print the target build properties
+function(print_target_properties tgt)
+    if(NOT TARGET ${tgt})
+        message("There is no target named '${tgt}'")
+        return()
+    endif()
+
+    # this list of properties can be extended as needed
+    set(CMAKE_PROPERTY_LIST SOURCE_DIR BINARY_DIR COMPILE_DEFINITIONS
+             COMPILE_OPTIONS INCLUDE_DIRECTORIES LINK_LIBRARIES)
+
+    message("Configuration for target ${tgt}")
+
+    foreach (prop ${CMAKE_PROPERTY_LIST})
+        get_property(propval TARGET ${tgt} PROPERTY ${prop} SET)
+        if (propval)
+            get_target_property(propval ${tgt} ${prop})
+            message (STATUS "${prop} = ${propval}")
+        endif()
+    endforeach(prop)
+
+endfunction(print_target_properties)

cmake/ConkyBuildOptions.cmake

@@ -32,15 +32,21 @@ if(NOT CMAKE_BUILD_TYPE)
 endif(NOT CMAKE_BUILD_TYPE)
 
 # -std options for all build types
-set(CMAKE_C_FLAGS "-std=c99" CACHE STRING "Flags used by the C compiler during all build types.")
+set(CMAKE_C_FLAGS "-std=c99" CACHE STRING "Flags used by the C compiler during all build types." FORCE)
-set(CMAKE_CXX_FLAGS "-std=c++17" CACHE STRING "Flags used by the C++ compiler during all build types.")
+set(CMAKE_CXX_FLAGS "-std=c++17" CACHE STRING "Flags used by the C++ compiler during all build types." FORCE)
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 if(MAINTAINER_MODE)
 	# some extra debug flags when in 'maintainer mode'
-	set(CMAKE_C_FLAGS_DEBUG "-ggdb -Wall -W -Wextra -Wunused -Wdeclaration-after-statement -Wundef -Wendif-labels -Wshadow -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Wstrict-prototypes -Wold-style-definition -Winline -Wmissing-noreturn -Wmissing-format-attribute -Wredundant-decls -pedantic -Werror ${CMAKE_C_FLAGS_DEBUG}" CACHE STRING "Flags used by the compiler during debug builds." FORCE)
+	if (CMAKE_COMPILER_IS_GNUCC AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 7.0)
-	set(CMAKE_CXX_FLAGS_DEBUG "-ggdb -Wall -W -Wextra -Wunused -pedantic -Werror -Wno-format ${CMAKE_CXX_FLAGS_DEBUG}" CACHE STRING "Flags used by the compiler during debug builds." FORCE)
+		# Some flags are only supported on GCC >= 7.0, such as -Wimplicit-fallthrough=2
+		set(CMAKE_C_FLAGS_DEBUG "-ggdb -Wall -W -Wextra -Wunused -Wdeclaration-after-statement -Wundef -Wendif-labels -Wshadow -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Wstrict-prototypes -Wold-style-definition -Winline -Wmissing-noreturn -Wmissing-format-attribute -Wredundant-decls -pedantic -Werror ${CMAKE_C_FLAGS_DEBUG} -Wno-unknown-pragmas -Wno-error=pragmas -Wimplicit-fallthrough=2" CACHE STRING "Flags used by the compiler during debug builds." FORCE)
+		set(CMAKE_CXX_FLAGS_DEBUG "-ggdb -Wall -W -Wextra -Wunused -pedantic -Werror -Wno-format ${CMAKE_CXX_FLAGS_DEBUG} -Wno-unknown-pragmas -Wno-error=pragmas -Wimplicit-fallthrough=2" CACHE STRING "Flags used by the compiler during debug builds." FORCE)
+	else()
+		set(CMAKE_C_FLAGS_DEBUG "-ggdb -Wall -W -Wextra -Wunused -Wdeclaration-after-statement -Wundef -Wendif-labels -Wshadow -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Wstrict-prototypes -Wold-style-definition -Winline -Wmissing-noreturn -Wmissing-format-attribute -Wredundant-decls -pedantic -Werror ${CMAKE_C_FLAGS_DEBUG} -Wno-unknown-pragmas -Wno-error=pragmas" CACHE STRING "Flags used by the compiler during debug builds." FORCE)
+		set(CMAKE_CXX_FLAGS_DEBUG "-ggdb -Wall -W -Wextra -Wunused -pedantic -Werror -Wno-format ${CMAKE_CXX_FLAGS_DEBUG} -Wno-unknown-pragmas -Wno-error=pragmas" CACHE STRING "Flags used by the compiler during debug builds." FORCE)
+	endif()
 endif(MAINTAINER_MODE)
 
 option(CHECK_CODE_QUALITY "Check code formatting/quality with clang" false)
@@ -195,3 +201,20 @@ option(BUILD_CMUS "Enable support for cmus music player" true)
 option(BUILD_JOURNAL "Enable support for reading from the systemd journal" false)
 
 option(BUILD_PULSEAUDIO "Enable support for Pulseaudio's default sink and source" false)
+
+message( STATUS "CMAKE_C_FLAGS: " ${CMAKE_C_FLAGS} )
+message( STATUS "CMAKE_CXX_FLAGS: " ${CMAKE_CXX_FLAGS} )
+
+message( STATUS "CMAKE_C_FLAGS_DEBUG: " ${CMAKE_C_FLAGS_DEBUG} )
+message( STATUS "CMAKE_CXX_FLAGS_DEBUG: " ${CMAKE_CXX_FLAGS_DEBUG} )
+
+message( STATUS "CMAKE_C_FLAGS_MINSIZEREL: " ${CMAKE_C_FLAGS_MINSIZEREL} )
+message( STATUS "CMAKE_CXX_FLAGS_MINSIZEREL: " ${CMAKE_CXX_FLAGS_MINSIZEREL} )
+
+message( STATUS "CMAKE_C_FLAGS_RELEASE: " ${CMAKE_C_FLAGS_RELEASE} )
+message( STATUS "CMAKE_CXX_FLAGS_RELEASE: " ${CMAKE_CXX_FLAGS_RELEASE} )
+
+message( STATUS "CMAKE_C_FLAGS_RELWITHDEBINFO: " ${CMAKE_C_FLAGS_RELWITHDEBINFO} )
+message( STATUS "CMAKE_CXX_FLAGS_RELWITHDEBINFO: " ${CMAKE_CXX_FLAGS_RELWITHDEBINFO} )
+
+message( STATUS "CMAKE_BUILD_TYPE: " ${CMAKE_BUILD_TYPE} )

cmake/Docbook.cmake

@@ -74,10 +74,10 @@ if(MAINTAINER_MODE)
 			COMMAND ${APP_DB2X_MANXML} --encoding=utf-8 ${FIL}.mxml --output-dir ${CMAKE_CURRENT_SOURCE_DIR}
 			COMMAND ${APP_XSLTPROC} ${CMAKE_SOURCE_DIR}/doc/docbook-xml/html/docbook.xsl ${CMAKE_CURRENT_SOURCE_DIR}/${FIL}.xml > ${CMAKE_CURRENT_SOURCE_DIR}/${FIL}.html
 			COMMAND ${APP_MAN} -P '${APP_LESS} -is' ${CMAKE_CURRENT_SOURCE_DIR}/${PROJECT_NAME}.1 > ${CMAKE_SOURCE_DIR}/README
-			COMMAND ${APP_SED} -i -e "s/[[:cntrl:]]\\[[0-9]*m//g" ${CMAKE_SOURCE_DIR}/README
+			COMMAND ${APP_SED} -i'' -e 's/[[:cntrl:]]\\[[0-9]*m//g' ${CMAKE_SOURCE_DIR}/README
-			COMMAND ${APP_SED} -i -e "s/\\xE2//g" ${CMAKE_SOURCE_DIR}/README
+			COMMAND ${APP_SED} -i'' -e 's/\\xE2//g' ${CMAKE_SOURCE_DIR}/README
-			COMMAND ${APP_SED} -i -e "s/\\x80//g" ${CMAKE_SOURCE_DIR}/README
+			COMMAND ${APP_SED} -i'' -e 's/\\x80//g' ${CMAKE_SOURCE_DIR}/README
-			COMMAND ${APP_SED} -i -e "s/\\x90/-/g" ${CMAKE_SOURCE_DIR}/README
+			COMMAND ${APP_SED} -i'' -e 's/\\x90/-/g' ${CMAKE_SOURCE_DIR}/README
 			DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${FIL}.xml
 			COMMENT "Proccessing man page for ${FIL}"
 			)

cmake/ToLua.cmake

@@ -50,7 +50,7 @@ ADD_CUSTOM_COMMAND( OUTPUT ${TOLUA_OUT} ${INCL} COMMAND
 	VERBATIM )
 
 SET_SOURCE_FILES_PROPERTIES(${${VAR}} ${INCL} PROPERTIES GENERATED TRUE)
-SET_SOURCE_FILES_PROPERTIES(${${VAR}} PROPERTIES COMPILE_FLAGS "-Wno-bad-function-cast -Wno-unused-parameter -Wno-cast-qual")
+SET_SOURCE_FILES_PROPERTIES(${${VAR}} PROPERTIES COMPILE_FLAGS "-Wno-bad-function-cast -Wno-unused-parameter -Wno-cast-qual -Wno-error=pedantic")
 
 
 SET(${VAR} ${${VAR}} PARENT_SCOPE)

lua/CMakeLists.txt

@@ -41,6 +41,8 @@ if(BUILD_X11)
 
 		target_link_libraries(conky-cairo ${luacairo_libs} toluapp_lib_static)
 		set(lua_libs ${lua_libs} conky-cairo)
+
+		print_target_properties(conky-cairo)
 	endif(BUILD_LUA_CAIRO)
 
 	if(BUILD_LUA_IMLIB2)
@@ -52,6 +54,8 @@ if(BUILD_X11)
 
 		target_link_libraries(conky-imlib2 ${luaimlib2_libs} toluapp_lib_static)
 		set(lua_libs ${lua_libs} conky-imlib2)
+
+		print_target_properties(conky-imlib2)
 	endif(BUILD_LUA_IMLIB2)
 
 	if(BUILD_LUA_RSVG)
@@ -63,6 +67,8 @@ if(BUILD_X11)
 
 		target_link_libraries(conky-rsvg ${luarsvg_libs} toluapp_lib_static)
 		set(lua_libs ${lua_libs} conky-rsvg)
+		
+		print_target_properties(conky-rsvg)
 	endif(BUILD_LUA_RSVG)
 
 	if(BUILD_LUA_CAIRO AND BUILD_LUA_IMLIB2)

src/CMakeLists.txt

@@ -340,3 +340,5 @@ install(TARGETS
   LIBRARY DESTINATION lib
   ARCHIVE DESTINATION lib
 )
+
+print_target_properties(conky)

src/algebra.cc

@@ -46,10 +46,8 @@ int find_match_op(const char *expr) {
     switch (expr[idx]) {
       case '=':
       case '!':
-        if (expr[idx + 1] != '=') {
+        if (expr[idx + 1] != '=') { return -1; }
-          return -1;
+        /* falls through */
-        }
-        /* fall through */
       case '<':
       case '>':
         return idx;
@@ -63,27 +61,17 @@ int get_match_type(const char *expr) {
   int idx;
   const char *str;
 
-  if ((idx = find_match_op(expr)) == -1) {
+  if ((idx = find_match_op(expr)) == -1) { return -1; }
-    return -1;
-  }
   str = expr + idx;
 
-  if (*str == '=' && *(str + 1) == '=') {
+  if (*str == '=' && *(str + 1) == '=') { return OP_EQ; }
-    return OP_EQ;
+  if (*str == '!' && *(str + 1) == '=') { return OP_NEQ; }
-  }
-  if (*str == '!' && *(str + 1) == '=') {
-    return OP_NEQ;
-  }
   if (*str == '>') {
-    if (*(str + 1) == '=') {
+    if (*(str + 1) == '=') { return OP_GEQ; }
-      return OP_GEQ;
-    }
     return OP_GT;
   }
   if (*str == '<') {
-    if (*(str + 1) == '=') {
+    if (*(str + 1) == '=') { return OP_LEQ; }
-      return OP_LEQ;
-    }
     return OP_LT;
   }
   return -1;
@@ -132,35 +120,23 @@ enum arg_type get_arg_type(const char *arg) {
   p = arg;
   e = arg + strlen(arg) - 1;
 
-  while (p != e && (*e != 0) && *e == ' ') {
+  while (p != e && (*e != 0) && *e == ' ') { e--; }
-    e--;
+  while (p != e && *p == ' ') { p++; }
-  }
-  while (p != e && *p == ' ') {
-    p++;
-  }
 
-  if (*p == '"' && *e == '"') {
+  if (*p == '"' && *e == '"') { return ARG_STRING; }
-    return ARG_STRING;
-  }
 
   if (*p == '-') {  // allow negative values
     p++;
   }
   while (p <= e) {
-    if (isdigit((unsigned char)*p) == 0) {
+    if (isdigit((unsigned char)*p) == 0) { break; }
-      break;
-    }
     p++;
   }
-  if (p == e + 1) {
+  if (p == e + 1) { return ARG_LONG; }
-    return ARG_LONG;
-  }
   if (*p == '.' || *p == ',') {
     p++;
     while (p <= e) {
-      if (isdigit((unsigned char)*p) == 0) {
+      if (isdigit((unsigned char)*p) == 0) { return ARG_BAD; }
-        return ARG_BAD;
-      }
       p++;
     }
     return ARG_DOUBLE;
@@ -174,15 +150,9 @@ char *arg_to_string(const char *arg) {
 
   start = arg;
   len = 0;
-  while ((*start != 0) && *start == ' ') {
+  while ((*start != 0) && *start == ' ') { start++; }
-    start++;
+  if (!(*(start++) == '"')) { return nullptr; }
-  }
+  while (start[len] != '"') { len++; }
-  if (!(*(start++) == '"')) {
-    return nullptr;
-  }
-  while (start[len] != '"') {
-    len++;
-  }
   return strndup(start, len);
 }
 double arg_to_double(const char *arg) {
@@ -218,9 +188,7 @@ int compare(const char *expr) {
 
   expr_dup = strdup(expr);
   expr_dup[idx] = '\0';
-  if (expr_dup[idx + 1] == '=') {
+  if (expr_dup[idx + 1] == '=') { expr_dup[++idx] = '\0'; }
-    expr_dup[++idx] = '\0';
-  }
 
   type1 = get_arg_type(expr_dup);
   type2 = get_arg_type(expr_dup + idx + 1);
@@ -229,12 +197,8 @@ int compare(const char *expr) {
     free(expr_dup);
     return -2;
   }
-  if (type1 == ARG_LONG && type2 == ARG_DOUBLE) {
+  if (type1 == ARG_LONG && type2 == ARG_DOUBLE) { type1 = ARG_DOUBLE; }
-    type1 = ARG_DOUBLE;
+  if (type1 == ARG_DOUBLE && type2 == ARG_LONG) { type2 = ARG_DOUBLE; }
-  }
-  if (type1 == ARG_DOUBLE && type2 == ARG_LONG) {
-    type2 = ARG_DOUBLE;
-  }
   if (type1 != type2) {
     NORM_ERR("trying to compare args '%s' and '%s' of different type", expr_dup,
              (expr_dup + idx + 1));

src/diskio.h

@@ -42,10 +42,10 @@ struct diskio_stat {
         last(UINT_MAX),
         last_read(UINT_MAX),
         last_write(UINT_MAX) {
-    std::memset(sample, 0, sizeof(sample) / sizeof(sample[0]));
+    std::memset(sample, 0, sizeof(sample[0]) * sizeof(sample));
-    std::memset(sample_read, 0, sizeof(sample_read) / sizeof(sample_read[0]));
+    std::memset(sample_read, 0, sizeof(sample_read[0]) * sizeof(sample_read));
     std::memset(sample_write, 0,
-                sizeof(sample_write) / sizeof(sample_write[0]));
+                sizeof(sample_write[0]) * sizeof(sample_write));
   }
   struct diskio_stat *next;
   char *dev;

src/hddtemp.cc

@@ -53,6 +53,12 @@ struct hdd_info {
   char *dev;
   short temp;
   char unit;
+  void reset() {
+    next = 0;
+    dev = 0;
+    temp = 0;
+    unit = 0;
+  }
 };
 
 struct hdd_info hdd_info_head;
@@ -77,7 +83,7 @@ static void add_hddtemp_info(char *dev, short temp, char unit) {
   while (hdi->next) hdi = hdi->next;
 
   hdi->next = new hdd_info;
-  memset(hdi->next, 0, sizeof(struct hdd_info));
+  hdi->next->reset();
   hdi->next->dev = strdup(dev);
   hdi->next->temp = temp;
   hdi->next->unit = unit;

src/net_stat.cc

@@ -27,16 +27,16 @@
  *
  */
 
+#include "net_stat.h"
+#include <ctype.h>
+#include <string.h>
 #include <sys/ioctl.h>
 #include <unistd.h>
 #include <cerrno>
 #include <cstring>
-#include <string.h>
-#include <ctype.h>
 #include "conky.h"
 #include "logging.h"
 #include "net/if.h"
-#include "net_stat.h"
 #include "specials.h"
 #include "text_object.h"
 #if defined(__sun)
@@ -131,8 +131,7 @@ void parse_net_stat_arg(struct text_object *obj, const char *arg,
 
   if (arg == nullptr) { arg = DEFAULTNETDEV; }
 
-  if (0 == (strcmp("$gw_iface", arg)) ||
+  if (0 == (strcmp("$gw_iface", arg)) || 0 == (strcmp("${gw_iface}", arg))) {
-      0 == (strcmp("${gw_iface}", arg))) {
     arg = e_iface;
   }
 
@@ -148,9 +147,7 @@ void parse_net_stat_arg(struct text_object *obj, const char *arg,
     if (1U == found) {
       *buf_ptr = '\0';
       x = strtol(buf, (char **)NULL, 10);
-      if (63L > x) {
+      if (63L > x) { arg = interfaces_arr[x]; }
-        arg = interfaces_arr[x];
-      }
     }
   }
 
@@ -196,7 +193,8 @@ void parse_net_stat_bar_arg(struct text_object *obj, const char *arg,
   }
 }
 
-void print_downspeed(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_downspeed(struct text_object *obj, char *p,
+                     unsigned int p_max_size) {
   auto *ns = static_cast<struct net_stat *>(obj->data.opaque);
 
   if (ns == nullptr) { return; }
@@ -204,7 +202,8 @@ void print_downspeed(struct text_object *obj, char *p, unsigned int p_max_size)
   human_readable(ns->recv_speed, p, p_max_size);
 }
 
-void print_downspeedf(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_downspeedf(struct text_object *obj, char *p,
+                      unsigned int p_max_size) {
   auto *ns = static_cast<struct net_stat *>(obj->data.opaque);
 
   if (ns == nullptr) { return; }
@@ -228,7 +227,8 @@ void print_upspeedf(struct text_object *obj, char *p, unsigned int p_max_size) {
   spaced_print(p, p_max_size, "%.1f", 8, ns->trans_speed / 1024.0);
 }
 
-void print_totaldown(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_totaldown(struct text_object *obj, char *p,
+                     unsigned int p_max_size) {
   auto *ns = static_cast<struct net_stat *>(obj->data.opaque);
 
   if (ns == nullptr) { return; }
@@ -355,7 +355,8 @@ double upspeedgraphval(struct text_object *obj) {
 #endif /* BUILD_X11 */
 
 #ifdef BUILD_WLAN
-void print_wireless_essid(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_wireless_essid(struct text_object *obj, char *p,
+                          unsigned int p_max_size) {
   struct net_stat *ns = (struct net_stat *)obj->data.opaque;
 
   if (!ns) {
@@ -370,14 +371,16 @@ void print_wireless_essid(struct text_object *obj, char *p, unsigned int p_max_s
 
   snprintf(p, p_max_size, "%s", ns->essid);
 }
-void print_wireless_mode(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_wireless_mode(struct text_object *obj, char *p,
+                         unsigned int p_max_size) {
   struct net_stat *ns = (struct net_stat *)obj->data.opaque;
 
   if (!ns) return;
 
   snprintf(p, p_max_size, "%s", ns->mode);
 }
-void print_wireless_channel(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_wireless_channel(struct text_object *obj, char *p,
+                            unsigned int p_max_size) {
   struct net_stat *ns = (struct net_stat *)obj->data.opaque;
 
   if (!ns) return;
@@ -388,7 +391,8 @@ void print_wireless_channel(struct text_object *obj, char *p, unsigned int p_max
     snprintf(p, p_max_size, "%s", "/");
   }
 }
-void print_wireless_frequency(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_wireless_frequency(struct text_object *obj, char *p,
+                              unsigned int p_max_size) {
   struct net_stat *ns = (struct net_stat *)obj->data.opaque;
 
   if (!ns) return;
@@ -399,35 +403,40 @@ void print_wireless_frequency(struct text_object *obj, char *p, unsigned int p_m
     snprintf(p, p_max_size, "/");
   }
 }
-void print_wireless_bitrate(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_wireless_bitrate(struct text_object *obj, char *p,
+                            unsigned int p_max_size) {
   struct net_stat *ns = (struct net_stat *)obj->data.opaque;
 
   if (!ns) return;
 
   snprintf(p, p_max_size, "%s", ns->bitrate);
 }
-void print_wireless_ap(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_wireless_ap(struct text_object *obj, char *p,
+                       unsigned int p_max_size) {
   struct net_stat *ns = (struct net_stat *)obj->data.opaque;
 
   if (!ns) return;
 
   snprintf(p, p_max_size, "%s", ns->ap);
 }
-void print_wireless_link_qual(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_wireless_link_qual(struct text_object *obj, char *p,
+                              unsigned int p_max_size) {
   struct net_stat *ns = (struct net_stat *)obj->data.opaque;
 
   if (!ns) return;
 
   spaced_print(p, p_max_size, "%d", 4, ns->link_qual);
 }
-void print_wireless_link_qual_max(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_wireless_link_qual_max(struct text_object *obj, char *p,
+                                  unsigned int p_max_size) {
   struct net_stat *ns = (struct net_stat *)obj->data.opaque;
 
   if (!ns) return;
 
   spaced_print(p, p_max_size, "%d", 4, ns->link_qual_max);
 }
-void print_wireless_link_qual_perc(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_wireless_link_qual_perc(struct text_object *obj, char *p,
+                                   unsigned int p_max_size) {
   struct net_stat *ns = (struct net_stat *)obj->data.opaque;
 
   if (!ns) return;
@@ -544,6 +553,10 @@ struct _dns_data {
   _dns_data() = default;
   int nscount{0};
   char **ns_list{nullptr};
+  void reset() {
+    nscount = 0;
+    ns_list = nullptr;
+  }
 };
 
 static _dns_data dns_data;
@@ -555,7 +568,7 @@ void free_dns_data(struct text_object *obj) {
 
   for (i = 0; i < dns_data.nscount; i++) { free(dns_data.ns_list[i]); }
   free(dns_data.ns_list);
-  memset(&dns_data, 0, sizeof(dns_data));
+  dns_data.reset();
 }
 
 int update_dns_data() {
@@ -591,7 +604,8 @@ void parse_nameserver_arg(struct text_object *obj, const char *arg) {
   obj->data.l = arg != nullptr ? atoi(arg) : 0;
 }
 
-void print_nameserver(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_nameserver(struct text_object *obj, char *p,
+                      unsigned int p_max_size) {
   if (dns_data.nscount > obj->data.l) {
     snprintf(p, p_max_size, "%s", dns_data.ns_list[obj->data.l]);
   }

src/pulseaudio.cc

@@ -179,11 +179,13 @@ void subscribe_cb(pa_context *c, pa_subscription_event_type_t t, uint32_t index,
 }
 
 #define PULSEAUDIO_WAIT(COMMAND)                                 \
+  {                                                              \
     op = COMMAND;                                                \
     while (pa_operation_get_state(op) == PA_OPERATION_RUNNING) { \
       pa_threaded_mainloop_wait(pulseaudio->mainloop);           \
     }                                                            \
-  pa_operation_unref(op);
+    pa_operation_unref(op);                                      \
+  }
 
 void init_pulseaudio(struct text_object *obj) {
   // already initialized
@@ -219,9 +221,7 @@ void init_pulseaudio(struct text_object *obj) {
   }
   pa_threaded_mainloop_start(pulseaudio->mainloop);
 
-  while (pulseaudio->cstate != PULSE_CONTEXT_READY) {
+  while (pulseaudio->cstate != PULSE_CONTEXT_READY) { usleep(200); }
-    usleep(200);
-  }
 
   // Initial parameters update
 
@@ -324,7 +324,8 @@ void print_puau_card_active_profile(struct text_object *obj, char *p,
            get_pulseaudio(obj).card_active_profile_description.c_str());
 }
 
-void print_puau_card_name(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_puau_card_name(struct text_object *obj, char *p,
+                          unsigned int p_max_size) {
   snprintf(p, p_max_size, "%s", get_pulseaudio(obj).card_name.c_str());
 }
 

src/text_object.cc

@@ -37,18 +37,15 @@ void gen_free_opaque(struct text_object *obj) {
   free_and_zero(obj->data.opaque);
 }
 
-int gen_false_iftest(struct text_object *) {
+int gen_false_iftest(struct text_object *) { return 0; }
-  return 0;
-}
 
 void gen_print_nothing(struct text_object *, char *, unsigned int) {
   // literally does nothing
 }
 
-void gen_print_obj_data_s(struct text_object *obj, char *p, unsigned int p_max_size) {
+void gen_print_obj_data_s(struct text_object *obj, char *p,
-  if (obj->data.s == nullptr) {
+                          unsigned int p_max_size) {
-    return;
+  if (obj->data.s == nullptr) { return; }
-  }
   snprintf(p, p_max_size, "%s", obj->data.s);
 }
 
@@ -83,9 +80,7 @@ int append_object(struct text_object *root, struct text_object *obj) {
   }
 
   /* find end of appended list to point root->prev there */
-  while (obj->next != nullptr) {
+  while (obj->next != nullptr) { obj = obj->next; }
-    obj = obj->next;
-  }
   root->prev = obj;
 
   return 0;
@@ -145,7 +140,7 @@ static int push_ifblock(struct ifblock_stack_obj **ifblock_stack_top,
       if ((*ifblock_stack_top) == nullptr)
         CRIT_ERR(nullptr, nullptr, "got an else without matching if");
       (*ifblock_stack_top)->obj->ifblock_next = obj;
-      /* fall through */
+      /* falls through */
     case IFBLOCK_IF:
       stackobj = static_cast<ifblock_stack_obj *>(
           malloc(sizeof(struct ifblock_stack_obj)));

src/timeinfo.cc

@@ -62,10 +62,10 @@ void scan_tztime(struct text_object *obj, const char *arg) {
   if (arg != nullptr) {
     int nArgs = sscanf(arg, "%255s %255[^\n]", buf1, buf2);
 
-    switch (nArgs) {
+    if (nArgs == 2) {
-      case 2:
       fmt = buf2;
-      case 1:
+      tz = buf1;
+    } else if (nArgs == 1) {
       tz = buf1;
     }
   }
@@ -312,7 +312,8 @@ static void do_format_time(struct text_object *obj, char *p,
   }
 }
 
-void print_format_time(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_format_time(struct text_object *obj, char *p,
+                       unsigned int p_max_size) {
   std::unique_ptr<char[]> buf(new char[max_user_text.get(*state)]);
 
   generate_text_internal(buf.get(), max_user_text.get(*state), *obj->sub);

src/users.cc

@@ -40,7 +40,7 @@ static void user_name(char *ptr) {
   setutent();
   while ((usr = getutent()) != nullptr) {
     if (usr->ut_type == USER_PROCESS) {
-      if (strlen(ptr) + strlen(usr->ut_name) + 1 <= BUFLEN) {
+      if (strlen(ptr) + strnlen(usr->ut_name, UT_NAMESIZE - 1) + 1 <= BUFLEN) {
         strncat(ptr, usr->ut_name, UT_NAMESIZE);
       }
     }
@@ -62,7 +62,7 @@ static void user_term(char *ptr) {
   setutent();
   while ((usr = getutent()) != nullptr) {
     if (usr->ut_type == USER_PROCESS) {
-      if (strlen(ptr) + strlen(usr->ut_line) + 1 <= BUFLEN) {
+      if (strlen(ptr) + strnlen(usr->ut_line, UT_LINESIZE) + 1 <= BUFLEN) {
         strncat(ptr, usr->ut_line, UT_LINESIZE);
       }
     }
@@ -184,27 +184,32 @@ int update_users(void) {
   return 0;
 }
 
-void print_user_names(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_user_names(struct text_object *obj, char *p,
+                      unsigned int p_max_size) {
   (void)obj;
   snprintf(p, p_max_size, "%s", info.users.names);
 }
 
-void print_user_terms(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_user_terms(struct text_object *obj, char *p,
+                      unsigned int p_max_size) {
   (void)obj;
   snprintf(p, p_max_size, "%s", info.users.terms);
 }
 
-void print_user_times(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_user_times(struct text_object *obj, char *p,
+                      unsigned int p_max_size) {
   (void)obj;
   snprintf(p, p_max_size, "%s", info.users.times);
 }
 
-void print_user_time(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_user_time(struct text_object *obj, char *p,
+                     unsigned int p_max_size) {
   update_user_time(obj->data.s);
   snprintf(p, p_max_size, "%s", info.users.ctime);
 }
 
-void print_user_number(struct text_object *obj, char *p, unsigned int p_max_size) {
+void print_user_number(struct text_object *obj, char *p,
+                       unsigned int p_max_size) {
   (void)obj;
   snprintf(p, p_max_size, "%d", info.users.number);
 }

src/x11.cc

@@ -32,12 +32,12 @@
 #include "conky.h"
 #include "logging.h"
 
-#pragma clang diagnostic push
+#pragma GCC diagnostic push
-#pragma clang diagnostic ignored "-Wdeprecated-register"
+#pragma GCC diagnostic ignored "-Wvariadic-macros"
-#pragma clang diagnostic ignored "-Wregister"
+#pragma GCC diagnostic ignored "-Wdeprecated-register"
-#pragma clang diagnostic ignored "-Wvariadic-macros"
+#pragma GCC diagnostic ignored "-Wregister"
 #include <X11/XKBlib.h>
-#pragma clang diagnostic pop
+#pragma GCC diagnostic pop
 #include <X11/Xatom.h>
 #include <X11/Xlib.h>
 #include <X11/Xmd.h>
@@ -294,7 +294,7 @@ std::pair<uint16_t, bool> window_hints_traits::convert(
 #ifdef OWN_WINDOW
 namespace {
 // used to set the default value for own_window_title
-std::string ethostnamecxx() {
+std::string gethostnamecxx() {
   update_uname();
   return info.uname_s.nodename;
 }