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List:       fedora-devel-list
Subject:    Re: Fedora 32 System-Wide Change proposal: Build Python 3 to statically link with libpython3.8.a for
From:       John Reiser <jreiser () bitwagon ! com>
Date:       2019-11-18 0:39:02
Message-ID: 0dd04aed-8eee-7be9-0b0f-f71c17dfd175 () bitwagon ! com
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>>> Thinking aloud: does anyone ever use symbol overriding for anything
>>> other than glibc?

>> Yes.  It is particularly useful for "spear fishing" debugging of lower-level
>> interfaces in large, complex multi-process applications.

> That only seems to need shallow interposition, though.  In most cases, I
> doubt you are interested in API calls from the library self because
> those are probably unproblematic.

One actual case: why  exp(600.0) ?  Yes, the first use of overriding was shallow
and libm (part of glibc).  But the caller was deep within a scientific library,
and the second overriding was not shallow at all.
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