Index: ELF/InputSection.cpp =================================================================== --- ELF/InputSection.cpp +++ ELF/InputSection.cpp @@ -255,6 +255,11 @@ template typename EHInputSection::uintX_t EHInputSection::getOffset(uintX_t Offset) { + // Relocations can be against .eh_frame section + // which has zero size. For example crtbeginT.o + // has some. + if (this->getSectionHdr()->sh_size == 0) + return Offset; std::pair *I = this->getRangeAndSize(Offset).first; uintX_t Base = I->second; if (Base == uintX_t(-1)) Index: ELF/OutputSections.cpp =================================================================== --- ELF/OutputSections.cpp +++ ELF/OutputSections.cpp @@ -853,8 +853,13 @@ Offset += Addend; Addend = 0; } - return VA + cast>(Section)->getOffset(Offset) + - Addend; + uintX_t SecOff; + if (isa>(Section)) + SecOff = cast>(Section)->getOffset(Offset); + else + SecOff = cast>(Section)->getOffset(Offset); + + return VA + SecOff + Addend; } // Returns true if a symbol can be replaced at load-time by a symbol Index: test/ELF/ehframe-relocation.s =================================================================== --- test/ELF/ehframe-relocation.s +++ test/ELF/ehframe-relocation.s @@ -0,0 +1,35 @@ +// REQUIRES: x86 +// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o +// RUN: ld.lld %t.o -o %t +// RUN: llvm-readobj -s -section-data %t | FileCheck %s +// RUN: llvm-objdump -d %t | FileCheck --check-prefix=DISASM %s + +// CHECK: Name: .eh_frame +// CHECK-NEXT: Type: SHT_X86_64_UNWIND +// CHECK-NEXT: Flags [ +// CHECK-NEXT: SHF_ALLOC +// CHECK-NEXT: ] +// CHECK-NEXT: Address: 0x10120 +// CHECK-NEXT: Offset: +// CHECK-NEXT: Size: +// CHECK-NEXT: Link: 0 +// CHECK-NEXT: Info: 0 +// CHECK-NEXT: AddressAlignment: +// CHECK-NEXT: EntrySize: 0 +// CHECK-NEXT: SectionData ( +// CHECK-NEXT: ) + +// 0x10120 = 65824 +// 0x10120 + 5 = 65829 +// DISASM: Disassembly of section .text: +// DISASM-NEXT: _start: +// DISASM-NEXT: 11000: 48 8b 04 25 20 01 01 00 movq 65824, %rax +// DISASM-NEXT: 11008: 48 8b 04 25 25 01 01 00 movq 65829, %rax + +.section .eh_frame,"ax",@unwind + +.section .text +.globl _start +_start: + movq .eh_frame, %rax + movq .eh_frame + 5, %rax