Thread: Characters seem to be skipped incorrectly

I have a function that's meant to read the contents of text literals, somehow or other it seems to be randomly skipping the 1st few characters:
Struggling to spot the cause myself so hoping fresh eyes can, here's my current output (seems UTF-8 doesn't get copied to the clipboard properly so don't mind the \Uffffffff stuff):

Code:

make char.run (in directory: /run/media/zxuiji/ZXUIJI_1TB/github/mc)
cc -fPIC -Wall -Wno-multichar  -shared -o ./libnext.so -c next.c
cc -fPIC -Wall -Wno-multichar  -shared -o ./libtsc.so -c tsc.c
cc -fPIC -Wall -Wno-multichar  -shared -o ./libbase62.so -c base62.c
cc -fPIC -Wall -Wno-multichar  -D OUT=char.elf -o ./char.elf char.c ./libnext.so ./libtsc.so ./libbase62.so
./char.elf
char.c:551:literalc(): Error: 0x00000054, 84, Invalid or incomplete multibyte or wide character, Info:
char.c:551:literalc(): Error: 0x00000054, 84, Invalid or incomplete multibyte or wide character, Info:
std_encoding = 'UTF-8'
Compiler Tests:
'abcd': 0x61626364, 'd', dcba
'\u2ea2': 0x00E2BAA2, '\Uffffffff', \Uffffffff\Uffffffff\Uffffffffa\u2ea2': 0x61E2BAA2, '\Uffffffff', \Uffffffff\Uffffffff\Uffffffff'\u2ea2a': 0xE2BAA261, 'a', a\Uffffffff\Uffffffff\Uffffffffnit tests:
010 = 8
0b101 = 5
99999 = 99999
0x5f5e0ff = 99999999
\u2ea2 = 00A2BAE2, '\u2ea2'
'abcd' = 61626364, 'dcba'
'\u2ea2' = 00E2BAA2, '\Uffffffff\Uffffffff\Uffffffff'a\u2ea2' = 61E2BAA2, '\Uffffffff\Uffffffff\Uffffffff
'\u2ea2a' = 00EEA8AA, '\Uffffffff\Uffffffff\Uffffffff"\u2ea2" = 00A2BAE2, '\u2ea2'
"abcd\u2ea2" = 64636261, 'abcd\u2ea2'
"\u2ea2abcd" = 62AAA8EE, '\uea2abcd'
"abcd\u2ea2wxyz" = 64636261, 'abcd\u2ea2wxyz'
u8\u2ea2 =
u8'abcd' = 61626364, 'dcba'
u8'\u2ea2' = 00E2BAA2, '\Uffffffff\Uffffffff\Uffffffffu8'a\u2ea2' = 61E2BAA2, '\Uffffffff\Uffffffff\Uffffffff
u8'\u2ea2a' = 00EEA8AA, '\Uffffffff\Uffffffff\Uffffffffu8"\u2ea2" = 00A2BAE2, '\u2ea2'
u8"abcd\u2ea2" = 64636261, 'abcd\u2ea2'
u8"\u2ea2abcd" = 62AAA8EE, '\uea2abcd'
u8"abcd\u2ea2wxyz" = 64636261, 'abcd\u2ea2wxyz'
u\u2ea2 =
u'abcd' = 0064FEFF, '
u'\u2ea2' = 00000000, ''
u'a\u2ea2' = 00000000, ''
u'\u2ea2a' = 00000000, ''
u"\u2ea2" = 00002EA2, '
u"abcd\u2ea2" = 00620061, '
u"\u2ea2abcd" = 0062EA2A, '
u"abcd\u2ea2wxyz" = 00620061, '
U\u2ea2 =
U'abcd' = 0000FEFF, '
U'\u2ea2' = 00000000, ''
U'a\u2ea2' = 00000000, ''
U'\u2ea2a' = 00000000, ''
U"\u2ea2" = 00002EA2, '
U"abcd\u2ea2" = 00000061, '
U"\u2ea2abcd" = 0000EA2A, '
U"abcd\u2ea2wxyz" = 00000061, '
L\u2ea2 =
L'abcd' =
L'\u2ea2' =
L'a\u2ea2' =
L'\u2ea2a' =
L"\u2ea2" =
L"abcd\u2ea2" =
L"\u2ea2abcd" =
L"abcd\u2ea2wxyz" =
User Tests:
Please enter a character:
rm libtsc.so libbase62.so char.elf libnext.so
char.c:551:literalc(): Error: 0x00000054, 84, Invalid or incomplete multibyte or wide character, Info:
char.c:551:literalc(): Error: 0x00000054, 84, Invalid or incomplete multibyte or wide character, Info:
char.c:551:literalc(): Error: 0x00000054, 84, Invalid or incomplete multibyte or wide character, Info:
char.c:551:literalc(): Error: 0x00000054, 84, Invalid or incomplete multibyte or wide character, Info:
char.c:551:literalc(): Error: 0x00000054, 84, Invalid or incomplete multibyte or wide character, Info:
char.c:551:literalc(): Error: 0x00000054, 84, Invalid or incomplete multibyte or wide character, Info:
char.c:551:literalc(): Error: 0x00000054, 84, Invalid or incomplete multibyte or wide character, Info:
char.c:551:literalc(): Error: 0x00000054, 84, Invalid or incomplete multibyte or wide character, Info:
char.c:551:literalc(): Error: 0x00000054, 84, Invalid or incomplete multibyte or wide character, Info:
char.c:551:literalc(): Error: 0x00000054, 84, Invalid or incomplete multibyte or wide character, Info:
char.c:551:literalc(): Error: 0x00000054, 84, Invalid or incomplete multibyte or wide character, Info:
Compilation finished successfully.

Code:

int rdText( NEXTC *_nextc, char8_t *c, size_t leng, size_t stop, rdTextTok *tok ) {
	int ret = nextc_validate(_nextc);
	size_t max;
	if ( ret != EXIT_SUCCESS ) return ret;
	if ( !c || !tok ) {
		ret = EDESTADDRREQ;
		FAIL( stderr, ret, "c or tok was NULL!");
		return ret;
	}
	if ( !stop ) stop = leng;
	tok->left = leng - tok->i;
	if ( tok->now[0] ) {
		max = utfclen(tok->now[0]) + 1;
		if ( tok->left < max || stop <= (tok->i + max) )
			return ERANGE;
		(void)utfcpy( &c[tok->i], tok->left, tok->now, max );
		tok->i += max;
		tok->left -= max;
		(void)memset( tok->now, 0, NEXTC_C_SIZE );
	}
	while ( tok->use_current || (ret = nextc(_nextc)) == EXIT_SUCCESS ) {
		switch ( _nextc->c[0] ) {
		case 0: case U'\n': case U'\r':
			ret = EILSEQ;
			FAIL( stderr, ret, "special characters"
				" must be escaped in text literals!");
			return ret;
		case U'\\':
			(void)rdEscChr( _nextc, tok->now );
			tok->use_current = 1;
			max = utfclen(tok->now[0]) + 1;
			if ( tok->left < max || stop <= (tok->i + max) )
				return ERANGE;
			(void)utfcpy( &(c[tok->i]), tok->left, tok->now, max );
			(void)memset( tok->now, 0, NEXTC_C_SIZE );
			break;
		case U'\'': case U'"':
			if ( !(tok->left) ) {
				tok->use_current = 1;
				return ERANGE;
			}
			tok->use_current = 0;
			c[tok->i] = 0;
			return EXIT_SUCCESS;
		default:
			max = utfclen(_nextc->c[0]) + 1;
			if ( tok->left < max || stop <= (tok->i + max) ) {
				tok->use_current = 1;
				return ERANGE;
			}
			(void)utfcpy( &c[tok->i], tok->left, _nextc->c, max );
			tok->use_current = 0;
		}
		tok->i += max;
		tok->left = leng - tok->i;
	}
	return ret;
}

Found the error, it wasn't directly in rdText, it was in a sub sub call to ubase() via rdEscChr(), I had missed the = sign in a >= comparison for the max number of characters to read as part of the number, rectifying that fixed my output, fresh eyes helped on this occasion