Attachment #173919 for bug #212033

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	len = 0;
	while ((wc = __fgetwc_unlock(fp)) != WEOF) {
#define	GROW	512
		if (len >= fp->_lb._size / sizeof(wchar_t) &&
		    __slbexpand(fp, len + GROW))
			goto error;
		*((wchar_t *)fp->_lb._base + len++) = wc;
		if (wc == L'\n')
			break;
	}
	if (len == 0 || fp->_flags & __SERR)
		goto error;

	FUNLOCKFILE(fp);
	*lenp = len;
	return (wchar_t *)fp->_lb._base;

error:
	FUNLOCKFILE(fp);
	*lenp = 0;
	return NULL;
}

Return to bug 212033

Lines 59-81 fgetwln(FILE * __restrict fp, size_t *le Link Here

(-)stdio/fgetwln.c (-1 / +1 lines)
59		59
60	len = 0;	60	len = 0;
61	while ((wc = __fgetwc_unlock(fp)) != WEOF) {	61	while ((wc = __fgetwc_unlock(fp)) != WEOF) {
62	#define GROW 512	62	#define GROW 512
63	if (len >= fp->_lb._size / sizeof(wchar_t) &&	63	if (len >= fp->_lb._size / sizeof(wchar_t) &&
64	__slbexpand(fp, len + GROW))	64	__slbexpand(fp, len + GROW))
65	goto error;	65	goto error;
66	((wchar_t )fp->_lb._base + len++) = wc;	66	((wchar_t )fp->_lb._base + len++) = wc;
67	if (wc == L'\n')	67	if (wc == L'\n')
68	break;	68	break;
69	}	69	}
70	if (len == 0)	70	if (len == 0 \|\| fp->_flags & __SERR)
71	goto error;	71	goto error;
72		72
73	FUNLOCKFILE(fp);	73	FUNLOCKFILE(fp);
74	*lenp = len;	74	*lenp = len;
75	return (wchar_t *)fp->_lb._base;	75	return (wchar_t *)fp->_lb._base;
76		76
77	error:	77	error:
78	FUNLOCKFILE(fp);	78	FUNLOCKFILE(fp);
79	*lenp = 0;	79	*lenp = 0;
80	return NULL;	80	return NULL;
81	}	81	}