Dangerous library freedom to throw during stack unwinding

Clause / Subclause / Annex: 
15.5.1
Para/Table/Figure: 
1
Comment type: 
Te
Comment / justification for change: 

According to the first bullet it is perfectly alright for a library function to exit by throwing an exception during stack unwinding, This is clearly not true.

Recommended change: 

Strike the word ‘user’ from the first bullet point.

MB: 
UK