Fix some comparisons between signed and unsigned integers

drivers/png/image_loader_png.cpp

@@ -270,7 +270,7 @@ static void user_read_data(png_structp png_ptr,png_bytep data, png_size_t p_leng
 	PNGReadStatus *rstatus;
 	rstatus=(PNGReadStatus*)png_get_io_ptr(png_ptr);
 
-	int to_read=p_length;
+	png_size_t to_read=p_length;
 	if (rstatus->size>=0) {
 		to_read = MIN( p_length, rstatus->size - rstatus->offset);
 	}

modules/gdscript/gd_tokenizer.cpp

@@ -1322,7 +1322,7 @@ StringName GDTokenizerBuffer::get_token_identifier(int p_offset) const{
 
 	ERR_FAIL_INDEX_V(offset,tokens.size(),StringName());
 	uint32_t identifier = tokens[offset]>>TOKEN_BITS;
-	ERR_FAIL_INDEX_V(identifier,identifiers.size(),StringName());
+	ERR_FAIL_INDEX_V(identifier,(uint32_t)identifiers.size(),StringName());
 
 	return identifiers[identifier];
 }
@@ -1381,7 +1381,7 @@ const Variant& GDTokenizerBuffer::get_token_constant(int p_offset) const{
 	int offset = token+p_offset;
 	ERR_FAIL_INDEX_V(offset,tokens.size(),nil);
 	uint32_t constant = tokens[offset]>>TOKEN_BITS;
-	ERR_FAIL_INDEX_V(constant,constants.size(),nil);
+	ERR_FAIL_INDEX_V(constant,(uint32_t)constants.size(),nil);
 	return constants[constant];
 
 }

platform/android/export/export.cpp

@@ -495,7 +495,7 @@ static String _parse_string(const uint8_t *p_bytes,bool p_utf8) {
 
 		Vector<uint8_t> str8;
 		str8.resize(len+1);
-		for(int i=0;i<len;i++) {
+		for(uint32_t i=0;i<len;i++) {
 			str8[i]=p_bytes[offset+i];
 		}
 		str8[len]=0;
@@ -505,7 +505,7 @@ static String _parse_string(const uint8_t *p_bytes,bool p_utf8) {
 	} else {
 
 		String str;
-		for(int i=0;i<len;i++) {
+		for(uint32_t i=0;i<len;i++) {
 			CharType c = decode_uint16(&p_bytes[offset+i*2]);
 			if (c==0)
 				break;
@@ -535,7 +535,7 @@ void EditorExportPlatformAndroid::_fix_resources(Vector<uint8_t>& p_manifest) {
 	printf("stirng count: %i\n",string_count);
 	printf("flags: %x\n",string_flags);
 
-	for(int i=0;i<string_count;i++) {
+	for(uint32_t i=0;i<string_count;i++) {
 
 		uint32_t offset = decode_uint32(&p_manifest[string_table_begins+i*4]);
 		offset+=string_table_begins+string_count*4;
@@ -569,7 +569,7 @@ void EditorExportPlatformAndroid::_fix_resources(Vector<uint8_t>& p_manifest) {
 	Vector<uint8_t> ret;
 	ret.resize(string_table_begins+string_table.size()*4);
 
-	for(int i=0;i<string_table_begins;i++) {
+	for(uint32_t i=0;i<string_table_begins;i++) {
 
 		ret[i]=p_manifest[i];
 	}
@@ -672,7 +672,7 @@ void EditorExportPlatformAndroid::_fix_manifest(Vector<uint8_t>& p_manifest,bool
 	uint32_t string_table_ends;
 	Vector<uint8_t> stable_extra;
 
-	while(ofs < p_manifest.size()) {
+	while(ofs < (uint32_t)p_manifest.size()) {
 
 		uint32_t chunk = decode_uint32(&p_manifest[ofs]);
 		uint32_t size = decode_uint32(&p_manifest[ofs+4]);
@@ -703,7 +703,7 @@ void EditorExportPlatformAndroid::_fix_manifest(Vector<uint8_t>& p_manifest,bool
 				string_table_begins=st_offset;
 
 
-				for(int i=0;i<string_count;i++) {
+				for(uint32_t i=0;i<string_count;i++) {
 
 					uint32_t string_at = decode_uint32(&p_manifest[st_offset+i*4]);
 					string_at+=st_offset+string_count*4;
@@ -719,7 +719,7 @@ void EditorExportPlatformAndroid::_fix_manifest(Vector<uint8_t>& p_manifest,bool
 						uint32_t len = decode_uint16(&p_manifest[string_at]);
 						Vector<CharType> ucstring;
 						ucstring.resize(len+1);
-						for(int j=0;j<len;j++) {
+						for(uint32_t j=0;j<len;j++) {
 							uint16_t c=decode_uint16(&p_manifest[string_at+2+2*j]);
 							ucstring[j]=c;
 						}
@@ -732,7 +732,7 @@ void EditorExportPlatformAndroid::_fix_manifest(Vector<uint8_t>& p_manifest,bool
 //					print_line("String "+itos(i)+": "+string_table[i]);
 				}
 
-				for(int i=string_end;i<(ofs+size);i++) {
+				for(uint32_t i=string_end;i<(ofs+size);i++) {
 					stable_extra.push_back(p_manifest[i]);
 				}
 
@@ -758,7 +758,7 @@ void EditorExportPlatformAndroid::_fix_manifest(Vector<uint8_t>& p_manifest,bool
 				uint32_t attrcount=decode_uint32(&p_manifest[iofs+20]);
 				iofs+=28;
 				//printf("ATTRCOUNT: %x\n",attrcount);
-				for(int i=0;i<attrcount;i++) {
+				for(uint32_t i=0;i<attrcount;i++) {
 					uint32_t attr_nspace=decode_uint32(&p_manifest[iofs]);
 					uint32_t attr_name=decode_uint32(&p_manifest[iofs+4]);
 					uint32_t attr_value=decode_uint32(&p_manifest[iofs+8]);
@@ -883,7 +883,7 @@ void EditorExportPlatformAndroid::_fix_manifest(Vector<uint8_t>& p_manifest,bool
 	Vector<uint8_t> ret;
 	ret.resize(string_table_begins+string_table.size()*4);
 
-	for(int i=0;i<string_table_begins;i++) {
+	for(uint32_t i=0;i<string_table_begins;i++) {
 
 		ret[i]=p_manifest[i];
 	}
@@ -927,7 +927,7 @@ void EditorExportPlatformAndroid::_fix_manifest(Vector<uint8_t>& p_manifest,bool
 
 	uint32_t extra = (p_manifest.size()-string_table_ends);
 	ret.resize(new_stable_end + extra);
-	for(int i=0;i<extra;i++)
+	for(uint32_t i=0;i<extra;i++)
 		ret[new_stable_end+i]=p_manifest[string_table_ends+i];
 
 	while(ret.size()%4)