http://sourceware.org/bugzilla/show_bug.cgi?id=12835
Summary: crossbinutils produces broken mingw64 binaries.
Product: binutils
Version: 2.21
Status: NEW
Severity: normal
Priority: P2
Component: ld
AssignedTo: unassig...@sources.redhat.com
ReportedBy: pl...@agmk.net
Created attachment 5762
--> http://sourceware.org/bugzilla/attachment.cgi?id=5762
testcase
Hi,
during investigating the http://gcc.gnu.org/PR47308 i've discovered that
executable linked by toolchain hosted on windows looks/works fine while
executable linked by crossmingw64 toolchain (host:linux, target:mingw64)
is corrupted in some way.
attached testcase contains objects compiled on linux crosstoolchain
and executables linked on both platforms.
loading both execs to gdb on windows shows difference:
D:\>mingw64\bin\gdb main-dw3-linked-on-linux.exe
Breakpoint 1, 0x0000000000401550 in main ()
(gdb) disassemble
Dump of assembler code for function main():
=> 0x0000000000401550 <+0>: push %rbp
0x0000000000401551 <+1>: push %r15
0x0000000000401553 <+3>: push %r14
0x0000000000401555 <+5>: push %r13
0x0000000000401557 <+7>: push %r12
0x0000000000401559 <+9>: push %rdi
0x000000000040155a <+10>: push %rsi
0x000000000040155b <+11>: push %rbx
0x000000000040155c <+12>: sub $0x158,%rsp
0x0000000000401563 <+19>: lea 0x80(%rsp),%rbp
0x000000000040156b <+27>: movaps %xmm6,0x30(%rbp)
0x000000000040156f <+31>: movaps %xmm7,0x40(%rbp)
0x0000000000401573 <+35>: movaps %xmm8,0x50(%rbp)
0x0000000000401578 <+40>: movaps %xmm9,0x60(%rbp)
0x000000000040157d <+45>: movaps %xmm10,0x70(%rbp)
0x0000000000401582 <+50>: movaps %xmm11,0x80(%rbp)
0x000000000040158a <+58>: movaps %xmm12,0x90(%rbp)
0x0000000000401592 <+66>: movaps %xmm13,0xa0(%rbp)
0x000000000040159a <+74>: movaps %xmm14,0xb0(%rbp)
0x00000000004015a2 <+82>: movaps %xmm15,0xc0(%rbp)
0x00000000004015aa <+90>: Dwarf Error: Cannot find signatured DIE
referenced from DIE at 0x20c [in module D:\main-dw3-linked-on-linux.exe]
D:\>mingw64\bin\gdb main-dw3-linked-on-windows.exe
Breakpoint 1, 0x0000000000401550 in main ()
(gdb) disassemble
Dump of assembler code for function main():
=> 0x0000000000401550 <+0>: push %rbp
0x0000000000401551 <+1>: push %r15
0x0000000000401553 <+3>: push %r14
0x0000000000401555 <+5>: push %r13
0x0000000000401557 <+7>: push %r12
0x0000000000401559 <+9>: push %rdi
0x000000000040155a <+10>: push %rsi
0x000000000040155b <+11>: push %rbx
0x000000000040155c <+12>: sub $0x158,%rsp
0x0000000000401563 <+19>: lea 0x80(%rsp),%rbp
0x000000000040156b <+27>: movaps %xmm6,0x30(%rbp)
0x000000000040156f <+31>: movaps %xmm7,0x40(%rbp)
0x0000000000401573 <+35>: movaps %xmm8,0x50(%rbp)
0x0000000000401578 <+40>: movaps %xmm9,0x60(%rbp)
0x000000000040157d <+45>: movaps %xmm10,0x70(%rbp)
0x0000000000401582 <+50>: movaps %xmm11,0x80(%rbp)
0x000000000040158a <+58>: movaps %xmm12,0x90(%rbp)
0x0000000000401592 <+66>: movaps %xmm13,0xa0(%rbp)
0x000000000040159a <+74>: movaps %xmm14,0xb0(%rbp)
0x00000000004015a2 <+82>: movaps %xmm15,0xc0(%rbp)
0x00000000004015aa <+90>:
lea 0xadbf(%rip),%rax # 0x40c370
<__cxxabiv1::__gxx_personality_sj0(int, _Unwind_Action,
_Unwind_Exception_Class, _Unwind_Exception*, _U
nwind_Context*)>
0x00000000004015b1 <+97>: mov %rax,-0x20(%rbp)
0x00000000004015b5 <+101>: lea 0xb564(%rip),%rax # 0x40cb20
<___DTOR_LIST__+16>
0x00000000004015bc <+108>: mov %rax,-0x18(%rbp)
0x00000000004015c0 <+112>: lea -0x10(%rbp),%rax
(...)
to reproduce the bug you need to compile and link testcase
on linux (runme.sh) and later relink on windows (runme.cmd).
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