http://llvm.org/bugs/show_bug.cgi?id=21496
Bug ID: 21496
Summary: string_view::remove_prefix, remove_suffix should leave
n > size() UB
Product: libc++
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
They have explicit narrow contract:
Requires: n <= size()
, but the libc++ made them work same as n == size(), which creates portability
problems. For reference, libstdc++'s remove_prefix is guarded by assertion,
remove_suffix is just `this->_M_len -= __n;` (which may worth to be guarded as
well, but that's their problem).
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