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[Bug target/50721] [4.6/4.7 Regression] Segfault of -O0 compiled program on x86_64 related to register allocator
- From: "dominiq at lps dot ens.fr" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 14 Oct 2011 13:58:21 +0000
- Subject: [Bug target/50721] [4.6/4.7 Regression] Segfault of -O0 compiled program on x86_64 related to register allocator
- Auto-submitted: auto-generated
- References: <bug-50721-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50721
--- Comment #11 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-10-14 13:58:21 UTC ---
> Well, in this example "size" is 3, hence, w[size -1] == w[2]. In Fortran, the
> "w" is the last argument, which is 2 and thus "d(2)" == "d(1:2)" has two
> elements. And indeed, accessing w[2] is a bit dangerous if one has just two
> elements ...
As far as I understand C, w[2] is the third element of w, isn't it? The test
succeeds if I replace d(2) with d(3) or d(0:2).