http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56353
Bug #: 56353
Summary: libgcj should be listed on command line for
libjava.jni/invocation/PR16923.c
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgcj
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: hjl.to...@gmail.com
libjava.jni/invocation/PR16923.c behaves differently, depending
on linking with gold or ld. _Jv_RegisterClasses is weak reference
and libgcj.so isn't on the linker command line. Since libgcj.so isn't
on the linker command line, gold resolves _Jv_RegisterClasses to 0 and
ld silently resolves it to _Jv_RegisterClasses in libgcj.so:
[hjl@gnu-13 testsuite]$ readelf -sWr /tmp/PR16923.gold | grep
_Jv_RegisterClasses
8: 0000000000000000 0 NOTYPE WEAK DEFAULT UND _Jv_RegisterClasses
37: 0000000000000000 0 NOTYPE WEAK DEFAULT UND _Jv_RegisterClasses
[hjl@gnu-13 testsuite]$ readelf -sWr /tmp/PR16923.bfd | grep
_Jv_RegisterClasses
0000000000600cd0 0000000900000007 R_X86_64_JUMP_SLOT 00000000004005e0
_Jv_RegisterClasses + 0
9: 00000000004005e0 0 FUNC WEAK DEFAULT UND _Jv_RegisterClasses
59: 00000000004005e0 0 FUNC WEAK DEFAULT UND _Jv_RegisterClasses
[hjl@gnu-13 testsuite]$
