[Bug gold/18855] New: String constants mixed up when linked with gold on Linux/sparc64

[atar4qemu at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18855

            Bug ID: 18855
           Summary: String constants mixed up when linked with gold on
                    Linux/sparc64
           Product: binutils
           Version: 2.26 (HEAD)
            Status: NEW
          Severity: critical
          Priority: P2
         Component: gold
          Assignee: ccoutant at gmail dot com
          Reporter: atar4qemu at gmail dot com
                CC: ian at airs dot com
  Target Milestone: ---

Created attachment 8538
  --> https://sourceware.org/bugzilla/attachment.cgi?id=8538&action=edit
gcc -v -Wl,--verbose log with -Wl,-fuse-ld=gold

Systemd components linked with gold fail under sparc(64).
I can't reproduce the bug with a smaller test case, but it's 100% reproducible
with building systemd:

# First, try linking with bfd:

$ gcc -pipe -Wall -Wextra -Wundef -Wformat=2 -Wformat-security
-Wformat-nonliteral -Wlogical-op -Wmissing-include-dirs -Wold-style-definition
-Wpointer-arith -Winit-self -Wdeclaration-after-statement -Wfloat-equal
-Wsuggest-attribute=noreturn -Werror=missing-prototypes
-Werror=implicit-function-declaration -Werror=missing-declarations
-Werror=return-type -Werror=shadow -Wstrict-prototypes -Wredundant-decls
-Wmissing-noreturn -Wshadow -Wendif-labels -Wstrict-aliasing=2 -Wwrite-strings
-Wno-unused-parameter -Wno-missing-field-initializers -Wno-unused-result
-Wno-format-signedness -Werror=overflow -Wdate-time -Wnested-externs
-ffast-math -fno-common -fdiagnostics-show-option -fno-strict-aliasing
-fvisibility=hidden -fstack-protector -fstack-protector-strong -fPIE
--param=ssp-buffer-size=4 -flto -ffunction-sections -fdata-sections -g -O2
-fstack-protector-strong -Wformat -Werror=format-security -Wl,--gc-sections
-Wl,--as-needed -Wl,--no-undefined -Wl,-z -Wl,relro -Wl,-z -Wl,now -pie
-Wl,-fuse-ld=bfd -Wl,-z -Wl,relro -o udevadm src/udev/udevadm.o
src/udev/udevadm-info.o src/udev/udevadm-control.o src/udev/udevadm-monitor.o
src/udev/udevadm-hwdb.o src/udev/udevadm-settle.o src/udev/udevadm-trigger.o
src/udev/udevadm-test.o src/udev/udevadm-test-builtin.o src/udev/udevadm-util.o
 ./.libs/libudev-core.a -lselinux -ldl -lrt -lm -lresolv -llzma -lgcrypt -lacl
-lblkid -lkmod -lcap -pthread -v -Wl,--verbose -v > ../bfd.log 2>&1

# Save the binary

mv udevadm udevadm-bfd

# Link with gold

 gcc -pipe -Wall -Wextra -Wundef -Wformat=2 -Wformat-security
-Wformat-nonliteral -Wlogical-op -Wmissing-include-dirs -Wold-style-definition
-Wpointer-arith -Winit-self -Wdeclaration-after-statement -Wfloat-equal
-Wsuggest-attribute=noreturn -Werror=missing-prototypes
-Werror=implicit-function-declaration -Werror=missing-declarations
-Werror=return-type -Werror=shadow -Wstrict-prototypes -Wredundant-decls
-Wmissing-noreturn -Wshadow -Wendif-labels -Wstrict-aliasing=2 -Wwrite-strings
-Wno-unused-parameter -Wno-missing-field-initializers -Wno-unused-result
-Wno-format-signedness -Werror=overflow -Wdate-time -Wnested-externs
-ffast-math -fno-common -fdiagnostics-show-option -fno-strict-aliasing
-fvisibility=hidden -fstack-protector -fstack-protector-strong -fPIE
--param=ssp-buffer-size=4 -flto -ffunction-sections -fdata-sections -g -O2
-fstack-protector-strong -Wformat -Werror=format-security -Wl,--gc-sections
-Wl,--as-needed -Wl,--no-undefined -Wl,-z -Wl,relro -Wl,-z -Wl,now -pie
-Wl,-fuse-ld=gold -Wl,-z -Wl,relro -o udevadm src/udev/udevadm.o
src/udev/udevadm-info.o src/udev/udevadm-control.o src/udev/udevadm-monitor.o
src/udev/udevadm-hwdb.o src/udev/udevadm-settle.o src/udev/udevadm-trigger.o
src/udev/udevadm-test.o src/udev/udevadm-test-builtin.o src/udev/udevadm-util.o
 ./.libs/libudev-core.a -lselinux -ldl -lrt -lm -lresolv -llzma -lgcrypt -lacl
-lblkid -lkmod -lcap -pthread -v -Wl,--verbose -v > ../gold.log 2>&1

# Now try the binaries:
$ ./udevadm-bfd --version
224
$ ./udevadm --version
%-6s[%li.%06ld] %-8s %s (%s)

As you see the binary linked with gold takes a wrong string for the version.
Some other strings are mixed up as well. ( Debian Bug#790560
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=790560 )

At least the binutils versions 2.24, 2.25, 2.25.1 and HEAD are affected.

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