[llvm-bugs] [Bug 30997] New: PHDRS assignment different from bfd

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=30997

            Bug ID: 30997
           Summary: PHDRS assignment different from bfd
           Product: lld
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: ASSIGNED
          Severity: normal
          Priority: P
         Component: ELF
          Assignee: rafael.espindola at gmail.com
          Reporter: rafael.espindola at gmail.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Given

.quad 0
.section .foo,"ax"
.quad 0


and a script

PHDRS
{
        ph_write PT_LOAD FLAGS(2);
        ph_exec  PT_LOAD FLAGS(1);
}

SECTIONS
{
  .bar : { *(.bar) } : ph_exec
  .foo : { *(.foo) }
  .text : { *(.text) } : ph_write
}


lld will put .foo is ph_write. The problem is that we propagate implicit PHDRS
assignment walking the output sections, and since there is not .bar in the
input ph_exec is not propagated to .foo
.

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