ICU-22604 Use 'void' for empty C parameter lists (-Wstrict-prototypes)

icu4c/source/common/ucase.h

@@ -357,7 +357,7 @@ enum {
 /* definitions for 16-bit case properties word ------------------------------ */
 
 U_CFUNC const UTrie2 * U_EXPORT2
-ucase_getTrie();
+ucase_getTrie(void);
 
 /* 2-bit constants for types of cased characters */
 #define UCASE_TYPE_MASK     3

icu4c/source/common/unicode/ulocbuilder.h

@@ -74,7 +74,7 @@ typedef struct ULocaleBuilder ULocaleBuilder;
  * @draft ICU 74
  */
 U_CAPI ULocaleBuilder* U_EXPORT2
-ulocbld_open();
+ulocbld_open(void);
 
 /**
  * Close the builder and destroy it's internal states.

icu4c/source/samples/cal/cal.c

@@ -201,7 +201,7 @@ main(int argc,
 
 /* Usage information */
 static void
-usage()
+usage(void)
 {  
     puts("Usage: icucal [OPTIONS] [[MONTH] YEAR]");
     puts("");
@@ -219,7 +219,7 @@ usage()
 
 /* Version information */
 static void
-version()
+version(void)
 {
     printf("icucal version %s (ICU version %s), created by Stephen F. Booth.\n", 
         CAL_VERSION, U_ICU_VERSION); 

icu4c/source/samples/date/date.c

@@ -186,7 +186,7 @@ main(int argc,
 
 /* Usage information */
 static void
-usage()
+usage(void)
 {  
   puts("Usage: icudate [OPTIONS]");
   puts("Options:");
@@ -207,7 +207,7 @@ usage()
 
 /* Version information */
 static void
-version()
+version(void)
 {
   UErrorCode status = U_ZERO_ERROR;
   const char *tzVer;

icu4c/source/samples/layout/gnomeglue.h

@@ -25,7 +25,7 @@ typedef void fm_fontMap;
 
 U_CDECL_BEGIN
 
-gs_guiSupport *gs_gnomeGuiSupportOpen();
+gs_guiSupport *gs_gnomeGuiSupportOpen(void);
 void gs_gnomeGuiSupportClose(gs_guiSupport *guiSupport);
 
 rs_surface *rs_gnomeRenderingSurfaceOpen(GtkWidget *theWidget);

icu4c/source/test/cintltst/callcoll.c

@@ -739,7 +739,7 @@ void genericRulesStarter(const char *rules, const char * const s[], uint32_t siz
   genericRulesStarterWithResult(rules, s, size, UCOL_LESS);
 }
 
-static void TestTertiary()
+static void TestTertiary(void)
 {
     int32_t len,i;
     UCollator *myCollation;
@@ -764,7 +764,7 @@ static void TestTertiary()
     myCollation = 0;
 }
 
-static void TestPrimary( )
+static void TestPrimary(void)
 {
     int32_t len,i;
     UCollator *myCollation;
@@ -790,7 +790,7 @@ static void TestPrimary( )
     myCollation = 0;
 }
 
-static void TestSecondary()
+static void TestSecondary(void)
 {
     int32_t i;
     int32_t len;
@@ -815,7 +815,7 @@ static void TestSecondary()
     myCollation = 0;
 }
 
-static void TestIdentical()
+static void TestIdentical(void)
 {
     int32_t i;
     int32_t len;
@@ -839,7 +839,7 @@ static void TestIdentical()
     myCollation = 0;
 }
 
-static void TestExtra()
+static void TestExtra(void)
 {
     int32_t i, j;
     int32_t len;
@@ -1173,7 +1173,7 @@ static void TestSurrogates(void)
  *
  */
 static void 
-TestInvalidRules(){
+TestInvalidRules(void){
 #define MAX_ERROR_STATES 2
 
     static const char* rulesArr[MAX_ERROR_STATES] = {
@@ -1219,7 +1219,7 @@ TestInvalidRules(){
 }
 
 static void
-TestJitterbug1098(){
+TestJitterbug1098(void){
     UChar rule[1000];
     UCollator* c1 = NULL;
     UErrorCode status = U_ZERO_ERROR;

icu4c/source/test/cintltst/capitst.c

@@ -271,7 +271,7 @@ void TestGetDefaultRules(){
 /* Collator Properties
  ucol_open, ucol_strcoll,  getStrength/setStrength
  getDecomposition/setDecomposition, getDisplayName*/
-void TestProperty()
+void TestProperty(void)
 {
     UCollator *col, *ruled;
     const UChar *rules;
@@ -449,7 +449,7 @@ void TestProperty()
 }
 
 /* Test RuleBasedCollator and getRules*/
-void TestRuleBasedColl()
+void TestRuleBasedColl(void)
 {
     UCollator *col1, *col2, *col3, *col4;
     UCollationElements *iter1, *iter2;
@@ -562,7 +562,7 @@ void TestRuleBasedColl()
     ucol_close(col1);
 }
 
-void TestCompare()
+void TestCompare(void)
 {
     UErrorCode status = U_ZERO_ERROR;
     UCollator *col;
@@ -612,7 +612,7 @@ void TestCompare()
 ---------------------------------------------
  tests decomposition setting
 */
-void TestDecomposition() {
+void TestDecomposition(void) {
     UErrorCode status = U_ZERO_ERROR;
     UCollator *en_US, *el_GR, *vi_VN;
     en_US = ucol_open("en_US", &status);
@@ -651,7 +651,7 @@ void TestDecomposition() {
 
 #define CLONETEST_COLLATOR_COUNT 4
 
-void TestSafeClone() {
+void TestSafeClone(void) {
     UChar test1[6];
     UChar test2[6];
     static const UChar umlautUStr[] = {0x00DC, 0};
@@ -808,7 +808,7 @@ void TestSafeClone() {
     }
 }
 
-void TestClone() {
+void TestClone(void) {
     UChar test1[6];
     UChar test2[6];
     static const UChar umlautUStr[] = {0x00DC, 0};
@@ -926,7 +926,7 @@ void TestClone() {
     }
 }
 
-void TestCloneBinary(){
+void TestCloneBinary(void){
     UErrorCode err = U_ZERO_ERROR;
     UCollator * col = ucol_open("en_US", &err);
     UCollator * c;
@@ -1046,7 +1046,7 @@ static void TestBengaliSortKey(void)
     TestOpenVsOpenRules ensures that collators from ucol_open and ucol_openRules
     will generate identical sort keys
 */
-void TestOpenVsOpenRules(){
+void TestOpenVsOpenRules(void){
 
     /* create an array of all the locales */
     int32_t numLocales = uloc_countAvailable();
@@ -1189,7 +1189,7 @@ void TestOpenVsOpenRules(){
 ----------------------------------------------------------------------------
  ctor -- Tests the getSortKey
 */
-void TestSortKey()
+void TestSortKey(void)
 {
     uint8_t *sortk1 = NULL, *sortk2 = NULL, *sortk3 = NULL, *sortkEmpty = NULL;
     int32_t sortklen, osortklen;
@@ -1334,7 +1334,7 @@ void TestSortKey()
     free(sortk2);
 
 }
-void TestHashCode()
+void TestHashCode(void)
 {
     uint8_t *sortk1, *sortk2, *sortk3;
     int32_t sortk1len, sortk2len, sortk3len;
@@ -1388,7 +1388,7 @@ void TestHashCode()
  * Tests the UCollatorElements API.
  *
  */
-void TestElemIter()
+void TestElemIter(void)
 {
     int32_t offset;
     int32_t order1, order2, order3;
@@ -1518,7 +1518,7 @@ doAssert( (ucol_tertiaryOrder(order1) != ucol_tertiaryOrder(order3)), "The terti
     log_verbose("testing CollationElementIterator ends...\n");
 }
 
-void TestGetLocale() {
+void TestGetLocale(void) {
   UErrorCode status = U_ZERO_ERROR;
   const char *rules = "&a<x<y<z";
   UChar rlz[256] = {0};
@@ -1619,7 +1619,7 @@ void TestGetLocale() {
 }
 
 
-void TestGetAll()
+void TestGetAll(void)
 {
     int32_t i, count;
     count=ucol_countAvailable();
@@ -1646,7 +1646,7 @@ static int compare_teststruct(const void *string1, const void *string2) {
     return(strcmp((const char *)((struct teststruct *)string1)->key, (const char *)((struct teststruct *)string2)->key));
 }
 
-void TestBounds() {
+void TestBounds(void) {
     UErrorCode status = U_ZERO_ERROR;
 
     UCollator *coll = ucol_open("sh", &status);
@@ -1861,7 +1861,7 @@ void TestSortKeyBufferOverrun(void) {
     ucol_close(coll);
 }
 
-static void TestAttribute()
+static void TestAttribute(void)
 {
     UErrorCode error = U_ZERO_ERROR;
     UCollator *coll = ucol_open(NULL, &error);
@@ -1964,7 +1964,7 @@ static void TestAttribute()
     ucol_close(coll);
 }
 
-void TestGetTailoredSet() {
+void TestGetTailoredSet(void) {
   struct {
     const char *rules;
     const char *tests[20];

icu4c/source/test/cintltst/cbiapts.c

@@ -156,7 +156,7 @@ static void freeToUCharStrings(void **hook) {
 
 
 #if !UCONFIG_NO_FILE_IO
-static void TestBreakIteratorCAPI()
+static void TestBreakIteratorCAPI(void)
 {
     UErrorCode status = U_ZERO_ERROR;
     UBreakIterator *word, *sentence, *line, *character, *b, *bogus;
@@ -633,7 +633,7 @@ static UBreakIterator * testOpenRules(char *rules) {
  *  TestBreakIteratorRules - Verify that a break iterator can be created from
  *                           a set of source rules.
  */
-static void TestBreakIteratorRules() {
+static void TestBreakIteratorRules(void) {
     /*  Rules will keep together any run of letters not including 'a', OR
      *             keep together 'abc', but only when followed by 'def', OTHERWISE
      *             just return one char at a time.
@@ -720,7 +720,7 @@ static void TestBreakIteratorRules() {
     ubrk_close(bi);
 }
 
-static void TestBreakIteratorRuleError() {
+static void TestBreakIteratorRuleError(void) {
 /*
  *  TestBreakIteratorRuleError -   Try to create a BI from rules with syntax errors,
  *                                 check that the error is reported correctly.
@@ -754,7 +754,7 @@ static void TestBreakIteratorRuleError() {
 /*
 *   TestsBreakIteratorStatusVals()   Test the ubrk_getRuleStatusVec() function
 */
-static void TestBreakIteratorStatusVec() {
+static void TestBreakIteratorStatusVec(void) {
     #define RULE_STRING_LENGTH 200
     UChar          rules[RULE_STRING_LENGTH];