https://sourceware.org/bugzilla/show_bug.cgi?id=26928
Bug ID: 26928
Summary: [2.35 regression] -Bsymbolic-functions --dynamic-list
does not imply --dynamic-list-data any more
Product: binutils
Version: 2.36 (HEAD)
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: binutils-972305 at jspam dot de
Target Milestone: ---
Created attachment 12988
--> https://sourceware.org/bugzilla/attachment.cgi?id=12988&action=edit
test.cpp, reduced from Qt qbytearray.cpp
Since the following commit:
commit bb68f22c8e648032a0d1c1d17353eec599ff5e6a
Author: Fangrui Song <mask...@google.com>
Date: Wed May 20 18:31:39 2020 -0700
ld: Handle --dynamic-list* before -Bsymbolic -Bsymbolic-functions
there has been a behavior change when linking with "-Bsymbolic-functions
--dynamic-list"
To reproduce, use the attached test.cpp and dummy.dynlist and run:
g++-9 -fPIC test.cpp -shared -Wl,-Bsymbolic-functions -Wl,--dynamic-list
dummy.dynlist && objdump -R a.out | grep
'R_X86_64_GLOB_DAT.*_ZN1A10sharedDataE@@Base'
ld before the change (309cae1f7b): match
ld HEAD (abd20cb637): no match
gold HEAD (abd20cb637): match
ld HEAD (abd20cb637) when additionally specifying --dynamic-list-data: match
-> It seems that -Bsymbolic-functions used to imply --dynamic-list-data, but
after the change does not any more.
The change was found when debugging a regression when compiling Qt 4
(qbytearray.cpp).
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