https://sourceware.org/bugzilla/show_bug.cgi?id=22677
--- Comment #3 from David Leonard <d+sourcew...@adaptive-enterprises.com> --- Hi Nick, > This appears to be an artifact of the linker that you are using. If you > build an x86_64 linker using the FSF sources and run "ld --verbose" you > should see this as part of the output You are right that KEEPs for init_array/fini_array are present when -r is not supplied. But they are lost with -r. > I think however that the ubuntu version of the linker that you are using may > have its own, different built-in linker script, without the KEEP statements. > Please could you check ? Checked. I found the same issue with a build from clean sources: $ wget http://mirror.aarnet.edu.au/pub/gnu/binutils/binutils-2.29.1.tar.xz $ tar xf binutils-2.29.1.tar.xz $ mkdir build-clean /tmp/usr $ cd build-clean $ ../binutils-2.29.1/configure --prefix=/tmp/usr && make && make install checking build system type... x86_64-pc-linux-gnu checking host system type... x86_64-pc-linux-gnu checking target system type... x86_64-pc-linux-gnu [...] $ /tmp/usr/bin/ld -r --verbose GNU ld (GNU Binutils) 2.29.1 Supported emulations: elf_x86_64 elf32_x86_64 elf_i386 elf_iamcu i386linux elf_l1om elf_k1om using internal linker script: ================================================== /* Script for ld -r: link without relocation */ /* Copyright (C) 2014-2017 Free Software Foundation, Inc. Copying and distribution of this script, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. */ OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64") OUTPUT_ARCH(i386:x86-64) [...] $ /tmp/usr/bin/ld -r --verbose | grep -C1 KEEP { KEEP (*(SORT_NONE(.init))) } -- { KEEP (*(SORT_NONE(.fini))) } -- .eh_frame_hdr : { *(.eh_frame_hdr) } .eh_frame 0 : ONLY_IF_RO { KEEP (*(.eh_frame)) } .gcc_except_table 0 : ONLY_IF_RO { *(.gcc_except_table -- /* Exception handling */ .eh_frame 0 : ONLY_IF_RW { KEEP (*(.eh_frame)) } .gnu_extab 0 : ONLY_IF_RW { *(.gnu_extab) } -- { KEEP (*(.preinit_array)) } .jcr 0 : { KEEP (*(.jcr)) } .dynamic 0 : { *(.dynamic) } -- .debug_addr 0 : { *(.debug_addr) } .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) } } Re-verified that gc closure over .init_array still fails until explicit KEEPs added. mklibs$ gcc -ffunction-sections -fdata-sections -c -o L.o L.c mklibs$ /tmp/usr/bin/ld -r --gc-section L.o -u L4var -o libL.o mklibs$ nm libL.o 0000000000000000 D L4var mklibs$ cat fixup.ldscript SECTIONS { .init_array : { KEEP (*(.init_array)) } .fini_array : { KEEP (*(.fini_array)) } } mklibs$ /tmp/usr/bin/ld -r --gc-section L.o -u L4var -o libL.o fixup.ldscript /tmp/usr/bin/ld: warning: fixup.ldscript contains output sections; did you forget -T? mklibs$ nm libL.o 0000000000000000 D L4var 0000000000000000 T L5init 0000000000000004 C L5var 0000000000000000 t Lconstructor -- You are receiving this mail because: You are on the CC list for the bug. _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
