https://sourceware.org/bugzilla/show_bug.cgi?id=32095
Bug ID: 32095
Summary: Add support for building gprofng with ubsan
Product: binutils
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: gprofng
Assignee: vladimir.mezentsev at oracle dot com
Reporter: sam at gentoo dot org
Target Milestone: ---
Building gprofng with UBSAN was a bit of a pain because of how LD_PRELOAD is
heavily used in gprofng (which is fine, of course).
But some build system machinery or checks for whether we've been built with
UBSAN to avoid the need to workarounds would be appreciated to avoid the need
for hacking around it.
I hit this by building with:
CFLAGS="-O2 -fsanitize=undefined"
CXXFLAGS="-O2 -fsanitize=undefined"
Note that the same problems exist with ASAN (-fsanitize=address) but given that
relies on interposing malloc, I'm not sure if it's possible to make that work.
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