https://sourceware.org/bugzilla/show_bug.cgi?id=17366
Bug ID: 17366
Summary: gold can't handle a crt1.o with an .eh_frame
Product: binutils
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: gold
Assignee: ccoutant at google dot com
Reporter: rafael.espindola at gmail dot com
CC: ian at airs dot com
I noticed that gold's exception_static_test test was failing on my machine
(fedora 20 x86_64).
The link line is
gcctestdir/ld --build-id --no-add-needed --hash-style=gnu -m elf_x86_64 -static
-o exception_static_test
/usr/lib/gcc/x86_64-redhat-linux/4.8.3/../../../../lib64/crt1.o
/usr/lib/gcc/x86_64-redhat-linux/4.8.3/../../../../lib64/crti.o
/usr/lib/gcc/x86_64-redhat-linux/4.8.3/crtbeginT.o -Lgcctestdir
-L/usr/lib/gcc/x86_64-redhat-linux/4.8.3
-L/usr/lib/gcc/x86_64-redhat-linux/4.8.3/../../../../lib64 -L/lib/../lib64
-L/usr/lib/../lib64 -L/usr/lib/gcc/x86_64-redhat-linux/4.8.3/../../..
exception_test_main.o exception_test_1.o exception_test_2.o -ldl -lz -lstdc++
-lm --start-group -lgcc -lgcc_eh -lc --end-group
/usr/lib/gcc/x86_64-redhat-linux/4.8.3/crtend.o
/usr/lib/gcc/x86_64-redhat-linux/4.8.3/../../../../lib64/crtn.o
To see the problem run:
readelf -aW exception_static_test | grep -i eh_frame
On my system the output is
[16] .eh_frame PROGBITS 00000000004b60d8 0b60d8 00f5ec 00 A
0 0 8
00 .note.ABI-tag .note.gnu.build-id .rela.plt .init .plt .text
__libc_freeres_fn __libc_thread_freeres_fn .fini .rodata .gcc_except_table
.stapsdt.base __libc_subfreeres __libc_atexit __libc_thread_subfreeres
.eh_frame
2: 00000000004c56c0 0 OBJECT LOCAL DEFAULT 16 __EH_FRAME_BEGIN__
note how __EH_FRAME_BEGIN__ points to the *end* of .eh_frame.
with bfd ld I get
[15] .eh_frame PROGBITS 00000000004b5d08 0b5d08 00f524 00 A
0 0 8
00 .note.ABI-tag .note.gnu.build-id .rela.plt .init .plt .text
__libc_freeres_fn __libc_thread_freeres_fn .fini .rodata .stapsdt.base
__libc_subfreeres __libc_atexit __libc_thread_subfreeres .eh_frame
.gcc_except_table
261: 00000000004b5d38 0 OBJECT LOCAL DEFAULT 15 __EH_FRAME_BEGIN__
The difference of 0x30 from the start is accounted by the .eh_frame of crt1.o:
$ readelf -SW /lib64/crt1.o | grep .eh_frame
[ 5] .eh_frame PROGBITS 0000000000000000 000090 000030 00 A
0 0 8
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