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[Bug gold/12771] internal error in value_from_output_section, at ../../g

From: jrnieder at gmail dot com
Subject: [Bug gold/12771] internal error in value_from_output_section, at ../../gold/reloc.cc:1508 on armel
Date: Wed, 29 Jun 2011 15:36:29 +0000


--- Comment #7 from Jonathan Nieder <jrnieder at gmail dot com> 2011-06-29 
15:35:40 UTC ---
(In reply to comment #6)
> This seems far more likely to be a problem in the tools used to build gold,
> rather than a problem in gold itself.  I'm going to close this out.  Please
> reopen if you have some reason to believe that there is a problem in gold
> itself.

Just for completeness: did you test on a non-emulated ARM system?

The triggered failed assertion says

  bool found = object->merge_map()->get_output_offset(NULL, input_shndx,

  // If this assertion fails, it means that some relocation was
  // against a portion of an input merge section which we didn't map
  // to the output file and we didn't explicitly discard.  We should
  // always map all portions of input merge sections.

That doesn't immediately scream "code generation bug" to me --- it could be a
use of uninitialized memory or some other portability problem.  If I wanted to
pin it on something other than gold this early, I'd be more likely to blame
libstdc++ than the code generation, but it's hard to learn anything without
hardware to investigate on.

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