[PATCH] D60470: [DWARF] Prefer larger DW_AT_low_pc when constructing aranges

[Fangrui Song via Phabricator via llvm-commits]

MaskRay added a comment.

> It's not even a new issue. We've had this problem for years in the PlayStation proprietary linker, because ASLR-enabled executables have a 0 base address.

Ah, right! I forgot about the PIE case.

  if (Config->ImageBase) // --image-base= option
    return *Config->ImageBase;
  return Config->Pic ? 0 : DefaultImageBase; // otherwise, image base is 0 if -shared or -pie

`-static` makes it easier to run into this problem as there is no huge `.dynsym .dynstr`. lld's different section layout alleviates the problem due to its placement of `.rodata .eh_frame` before `.text`.


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D60470/new/

https://reviews.llvm.org/D60470