https://sourceware.org/bugzilla/show_bug.cgi?id=26659
Mateusz Mikuła <mati865 at gmail dot com> changed:
What |Removed |Added
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CC| |mati865 at gmail dot com
--- Comment #1 from Mateusz Mikuła <mati865 at gmail dot com> ---
There is discussion about this issue in
https://github.com/msys2/MINGW-packages/issues/6986
I tested it with GCC 10.2, Binutils 2.35, Clang/LLD 11.
Using reproducer in shared.zip by calling ./build.sh (designed to run under
MSYS2) GCC+ld.bfd fails with this error:
D:\tmp\weak\shared-wiki\build-bfd/../power_slow.c:15:(.text+0x18): relocation
truncated to fit: R_X86_64_PC32 against undefined symbol `user_hook'
The same code works as expected when using GCC+ld.lld, Clang+ld.bfd,
Clang+ld.lld.
Extracted details from issue in MSYS2 repo (I couldn't find anything beyond
what was already said there):
Relocations:
Clang:
Section (1) .text {
0xB IMAGE_REL_AMD64_REL32 .refptr.user_hook (10)
0x1F IMAGE_REL_AMD64_REL32 .refptr.user_hook (10)
0x4D IMAGE_REL_AMD64_REL32 power2 (24)
}
GCC:
Section (1) .text {
0xE IMAGE_REL_AMD64_REL32 .refptr.user_hook (29)
0x18 IMAGE_REL_AMD64_REL32 user_hook (33)
0x37 IMAGE_REL_AMD64_REL32 power2 (31)
}
Relevant symbols:
Symbol {
Name: user_hook
Value: 0
Section: IMAGE_SYM_UNDEFINED (0)
BaseType: Null (0x0)
ComplexType: Function (0x2)
StorageClass: WeakExternal (0x69)
AuxSymbolCount: 1
AuxWeakExternal {
Linked: .weak.user_hook.power3 (30)
Search: NoLibrary (0x1)
}
}
Symbol {
Name: .rdata$.refptr.user_hook
Value: 0
Section: .rdata$.refptr.user_hook (12)
BaseType: Null (0x0)
ComplexType: Null (0x0)
StorageClass: Static (0x3)
AuxSymbolCount: 1
AuxSectionDef {
Length: 8
RelocationCount: 1
LineNumberCount: 0
Checksum: 0x0
Number: 0
Selection: Any (0x2)
}
}
Symbol {
Name: .refptr.user_hook
Value: 0
Section: .rdata$.refptr.user_hook (12)
BaseType: Null (0x0)
ComplexType: Null (0x0)
StorageClass: External (0x2)
AuxSymbolCount: 0
}
Assembly and object file are included in objects.zip.
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