https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95154
Bug ID: 95154
Summary: [11 regression] FAIL: g++.dg/abi/pure-virtual1.C
-std=c++14 (test for excess errors)
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: sch...@linux-m68k.org
Target Milestone: ---
Target: ia64-*-*
spawn -ignore SIGHUP
/usr/local/gcc/gcc-20200515/Build/gcc/testsuite/g++3/../../xg++
-B/usr/local/gcc/gcc-20200515/Build/gcc/testsuite/g++3/../../
/usr/local/gcc/gcc-20200515/gcc/testsuite/g++.dg/abi/pure-virtual1.C
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -fdiagnostics-urls=never -nostdinc++
-I/usr/local/gcc/gcc-20200515/Build/ia64-suse-linux/libstdc++-v3/include/ia64-suse-linux
-I/usr/local/gcc/gcc-20200515/Build/ia64-suse-linux/libstdc++-v3/include
-I/usr/local/gcc/gcc-20200515/libstdc++-v3/libsupc++
-I/usr/local/gcc/gcc-20200515/libstdc++-v3/include/backward
-I/usr/local/gcc/gcc-20200515/libstdc++-v3/testsuite/util -fmessage-length=0
-std=c++14 -pedantic-errors -Wno-long-long -fno-rtti -nodefaultlibs -lc
-L/usr/local/gcc/gcc-20200515/Build/ia64-suse-linux/./libstdc++-v3/src/.libs
-B/usr/local/gcc/gcc-20200515/Build/ia64-suse-linux/./libstdc++-v3/src/.libs
-L/usr/local/gcc/gcc-20200515/Build/ia64-suse-linux/./libstdc++-v3/src/.libs
-lm -o pure-virtual1.exe
/tmp/ccyWJZLT.o:(.data.rel.ro._ZTV1A[_ZTV1A]+0x10): undefined reference to
`__cxa_pure_virtual'
collect2: error: ld returned 1 exit status
compiler exited with status 1
The reference comes from the vtable for A, the weak declaration for
__cxa_pure_virtual is missing:
.weak _ZTV1A#
.section .data.rel.ro._ZTV1A,"awG",@progbits,_ZTV1A,comdat
.align 8
.type _ZTV1A#, @object
.size _ZTV1A#, 32
_ZTV1A:
data8 0
data8 0
data16.ua @iplt(__cxa_pure_virtual#)
