http://sourceware.org/bugzilla/show_bug.cgi?id=15371
Bug #: 15371
Summary: uninitialised ifunc symbol
Product: binutils
Version: 2.24 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
AssignedTo: unassig...@sourceware.org
ReportedBy: ni...@redhat.com
Classification: Unclassified
Created attachment 6988
--> http://sourceware.org/bugzilla/attachment.cgi?id=6988
tarball containing sources necessary to reproduce the problem
The ifunc tests in the prelink testsuite are failing with segmentation faults,
due to what looks like an uninitialised ifunc symbol.
The problem can be reproduced by compiling and running the uploaded sources as
follows:
% gcc -O2 -shared -fpic -o ifunc1lib1.so ifunc1lib1.c
% gcc -O2 -shared -fpic -o ifunc1lib2.so ifunc1lib2.c ifunc1lib1.so
% gcc -o ifunc1 ifunc1.c -Wl,--rpath-link,. ifunc1lib2.so
ifunc1lib1.so
% LD_LIBRARY_PATH=. ./ifunc1
The seg-fault happens in ifunc1lib2.c:lib2test() where it calls lib2t1().
I feel that this is either a linker bug, or the inline assembler in ifunc.h is
wrong somehow. (Note this inline assembler used to work with earlier versions
of the linker).
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