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(parent: 1b0b13f) | patch
dlsym.3: Extend discussion of NULL symbol values
authorAlexander Monakov <amonakov@ispras.ru>
Sat, 16 May 2020 10:02:50 +0000 (13:02 +0300)
committerMichael Kerrisk <mtk.manpages@gmail.com>
Tue, 19 May 2020 20:19:39 +0000 (22:19 +0200)
commit88da10c16c82d83aa9c9caa5b053eb05ed49f826
tree30700e0a259bd2e193b9afee81982e6efbd1d839tree | snapshot
parent1b0b13fe97e372d5f234ab87de5afaa1df7b80fdcommit | diff
dlsym.3: Extend discussion of NULL symbol values

Avoid implying that use of IFUNC is the only way to produce a
symbol with NULL value. Give more scenarios how a symbol may get
NULL value, but explain that in those scenarios dlsym() will fail
with Glibc's ld.so due to an implementation inconsistency.

Signed-off-by: Alexander Monakov <amonakov@ispras.ru>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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