32bit armv7l valgrind error #847

1. 
   rustyrussell commented at 7:27 pm on November 17, 2020: contributor

   https://github.com/ElementsProject/lightning/issues/4203

   Seems like gcc is turning the “*r = *a” into memcpy, and various (all?) callers have r == a. Technically disallowed, but gcc may be allowed to make this assumption?

2. 
   real-or-random commented at 8:53 pm on November 17, 2020: contributor

   Ah, that’s the same as #776, just not in a -Os build… Sad that it happens here too.
3. 
   elichai commented at 8:54 am on November 18, 2020: contributor

   Now gcc too? :(
4. 
   real-or-random commented at 9:58 am on November 18, 2020: contributor

   Oh indeed, so far we’ve seen this only with clang… Let’s track this in #776.
5. real-or-random closed this on Nov 18, 2020

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Contributors
rustyrussell real-or-random elichai