[GHC] #14291: Tests tend to fail in the ext-interp way when split sections is enabled

[GHC]

#14291: Tests tend to fail in the ext-interp way when split sections is enabled
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        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.2.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:  13716
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by hsyl20):

 Replying to [comment:9 bgamari]:
 > So I plugged away at this a bit today. I'm increasingly suspicious of
 1c83fd814b12754be8af211a387cec906ca198b3 which touches a large amount of
 ELF linker logic. Unfortunately it's not terribly easy to revert.

 I don't know if it is related to this bug but the patch you mention has
 introduced the
 [https://git.haskell.org/ghc.git/blob/1c83fd814b12754be8af211a387cec906ca198b3:/rts/linker/Elf.c#l182
 following line]:
 {{{#!hs
 oc->info->sectionHeaderStrtab = (char*)((uint8_t*)oc->image +
    oc->info->sectionHeader[oc->info->elfHeader->e_shstrndx].sh_offset);
 }}}

 which may be wrong when there are too many sections (splitSections...).

 Could you try replacing `oc->info->elfHeader->e_shstrndx` with
 `elf_shstrndx(oc->info->elfHeader)`?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14291#comment:25>
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