https://llvm.org/bugs/show_bug.cgi?id=31779
Bug ID: 31779
Summary: basic_string::operator= isn't exception safe
Product: libc++
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: llvm-b...@daryl.haresign.com
CC: llvm-bugs@lists.llvm.org, mclow.li...@gmail.com
Classification: Unclassified
Assigning one string to another, where they have non-equal
propagate-on-copy-assignment allocators, does a `clear()`, followed by an
`assign()`. The `assign()` may throw, which leaves the string in a cleared
state.
This seems to violate the requirement specified here:
http://eel.is/c++draft/basic.string#string.require-2
A contrived example to show this:
http://coliru.stacked-crooked.com/a/c43a723d04878890
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