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Re: [PATCH] Fix ICE with strlen optimization (PR tree-optimization/50604)


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On 10/04/11 05:00, Jakub Jelinek wrote:
> Hi!
> 
> The following testcase ICEs on the trunk, as strlen optimization
> was assuming memcpy arguments will have expected type
> (size_type_node), but they had ssizetype instead.  The following
> patch fixes it both in the builtins.c folders that create memcpy
> and also in the strlen pass to no longer assume that.
> 
> Bootstrapped/regtested on x86_64-linux and i686-linux, ok for
> trunk?
> 
> 2011-10-04  Jakub Jelinek  <jakub@redhat.com>
> 
> PR tree-optimization/50604 * builtins.c (fold_builtin_strcpy,
> fold_builtin_stpcpy, fold_builtin_strncpy,
> fold_builtin_stxcpy_chk): Ensure last argument to memcpy has
> size_type_node type instead of ssizetype. * tree-ssa-strlen.c
> (handle_builtin_memcpy): Use size_type_node instead of TREE_TYPE
> (len) as type for newlen.
> 
> * gcc.dg/pr50604.c: New test.
OK.
jeff
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