0002899: Application hung when a page script set a very very long text to a textarea.value

MantisBT - NetSurf
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ID	Project	Category	View Status	Date Submitted	Last Update
0002899	NetSurf	Layout	public	2026-05-06 12:56	2026-05-06 12:56

Reporter	math
Assigned To
Priority	normal	Severity	major	Reproducibility	always
Status	new	Resolution	open
Platform		OS		OS Version
Product Version	3.11
Target Version		Fixed in Version
Fixed in CI build #
Reported in CI build #
URL of problem page	https://baidu.com

Summary	0002899: Application hung when a page script set a very very long text to a textarea.value
Description	When opening https://baidu.com, browser hung.
Steps To Reproduce	>gdb --batch -ex "run" -ex "bt" --args ./workspace/netsurf/nsgtk3 https://baidu.com ^C pango_layout_xy_to_index (libpango) ← Hung here ← layout_position @ layout_pango.c:136 ← nsfont_split @ layout_pango.c:245 ← textarea_reflow_multiline @ textarea.c:1023 ← textarea_set_text @ textarea.c:2020 ← box_textarea_create_textarea @ box_textarea.c:367 ← box_input_text @ box_special.c:590 ← box_textarea @ box_special.c:1840 ← convert_special_elements @ box_special.c:1927
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