[Bug libctf/27628] UBSAN error: binutils-gdb/libctf/ctf-serialize.c:852:4:

[nick.alcock at oracle dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27628

--- Comment #2 from Nick Alcock <nick.alcock at oracle dot com> ---
Diagnosed.

This is fallout from my recent dtd revamping, so does not affect 2.36. It
relates specifically to functions with no arguments, but of course those are
quite common... there is also a much older failure in isqualifier(), though it
only triggers if the compiler does not optimize away the dereference in
&foo[out_of_range_value].

We also have some failures diagnosed in the ld testsuite, though you have to
turn off leak detection there or the thing again wrongly concludes that CTF
isn't supported because the -gt test throws out a leak detection.

Squashing a bunch of related bugs now: will push something for you to test
later today.

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