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[Bug middle-end/78501] [7 regression] SEGV in vrp_val_max
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 24 Nov 2016 09:29:33 +0000
- Subject: [Bug middle-end/78501] [7 regression] SEGV in vrp_val_max
- Auto-submitted: auto-generated
- References: <bug-78501-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78501
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Comment on attachment 40136
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40136
move ptrdiff_type_node initialization to build_common_tree_nodes
So, what do you want to do for VRP in the vms case where size_t is unsigned int
(32-bit) and ptrdiff_t is long long int (64-bit)? Shall we use VARYING range
in that case, or 0 to SIZE_MAX / 2, something different?
What about the hypothetical case where size_t would be larger than ptrdiff_t?