masayuki2009 edited a comment on pull request #5645:
URL: https://github.com/apache/incubator-nuttx/pull/5645#issuecomment-1065694196


   >@masayuki2009 , I will try to investigate the new toolchain issue
   
   @anchao 
   
   I noticed that the undefined instruction issue with gcc 10.3 does not happen 
with `CONFIG_DEBUG_FULLOPT=y`.
   I'm still not sure why the issue happens without the option.
   Actually, I increased some stack sizes, but the issue still happens.
   
   However, the data abort issue sabre-6quad:netknsh still happens even with  
`CONFIG_DEBUG_FULLOPT=y`
   
   >It seems to be a regression issue caused by this PR:
   >https://github.com/apache/incubator-nuttx/pull/5558
   
   Hmm, I don't think so, because it does not work by reverting the PR.
   
   BTW, the following issue still happens with both gcc 10.3.1 20210824 and gcc 
9.3.1 20200408
   Could you confirm what is happening?
   
   >I noticed that lm3s6965-ek:qemu-kostest (QEMU) failed with this PR.
   


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