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Re: [fortran, patch] Patch for PR18827


ping.

Feng Wang

 --- Feng Wang <wf_cs@yahoo.com> 的正文:
> This patch fix pr18827. Allows variables in a common block to be assigned a
> label. And do not set symbol's assign attribute when match assigned goto
> statement and i/o statements using label assigned variable. We should set it
> only when match assign statment. And add checking this attribute when
> resolving.
> 
> But this patch reveals another bug of the backend. The backend will remove
> the
> label unless we set !DECL_ARTIFICIAL flag on assigned label, even we set
> TREE_ADDRESSABLE flag and !DECL_IGNORED_P and FORCED_LABEL flag. After
> discussion with Steven, we reserve the setting of !DECL_ARTIFICIAL on
> assigned
> label to fix pr18827. And after committing this patch, I will file a BE bug
> reporting.
> 
> Tested on i686 with no regression. If it is ok, please commit it.
> 

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