llvm-project

42e49671 - [ELF] Don't create copy relocation/canonical PLT entry for a defined symbol (#75095)

[ELF] Don't create copy relocation/canonical PLT entry for a defined symbol (#75095) Copy relocations and canonical PLT entries are for symbols defined in a DSO. Currently we create them even for a `Defined`, possibly leading to an output that won't work at run-time (e.g. R_X86_64_JUMP_SLOT referencing a null symbol). ``` % cat a.s .globl _start, main .type main, @function _start: main: ret .rodata .quad main % clang -fuse-ld=lld -pie -nostdlib a.s % readelf -Wr a.out Relocation section '.rela.plt' at offset 0x290 contains 1 entry: Offset Info Type Symbol's Value Symbol's Name + Addend 00000000000033b8 0000000000000007 R_X86_64_JUMP_SLOT 12b0 ``` Report an error instead for the default `-z text` mode. GNU ld reports an error in `-z text` mode as well.