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* [Bug c++/40512] New: Compilation stops on valid code with ICE @ 2009-06-21 21:32 gcc-bugzilla at gcc dot gnu dot org 2009-06-21 22:09 ` [Bug c++/40512] " rguenth at gcc dot gnu dot org ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: gcc-bugzilla at gcc dot gnu dot org @ 2009-06-21 21:32 UTC (permalink / raw) To: gcc-bugs compile the attached code with the -std=c++0x flag. Environment: System: Linux x 2.6.26-2-686 #1 SMP Thu Mar 26 01:08:11 UTC 2009 i686 GNU/Linux host: i686-pc-linux-gnu build: i686-pc-linux-gnu target: i686-pc-linux-gnu configured with: ./configure --prefix=/home/x/gcc-4.4-20090616 --enable-languages=,c,c++, How-To-Repeat: template <unsigned width, unsigned height, typename T> class M { T v; public: T & operator[](unsigned) { return v; } T const & operator[](unsigned) const { return v; } template <typename oT, unsigned owidth> auto mggggg(M<owidth, width, oT> o) -> M<owidth, height, decltype(T()*o[0])> { typedef M<owidth, height, decltype(T()*oT())> res_t; return res_t(); } template <typename oT, unsigned owidth> auto operator*(M<owidth, width, oT> const & o) const -> M<owidth, height, decltype(T()*oT())> { typedef M<owidth, height, decltype(T()*oT())> res_t; return res_t(); } }; int main(int, char *[]) { typedef M<2, 2, int> xt; M<3, 2, xt> hv; M<4, 3, xt> vv; hv.mggggg(vv); } ------- Comment #1 from pooly at ural2 dot hszk dot bme dot hu 2009-06-21 21:32 ------- Fix: Replace o[0] with oT() on line 10. -- Summary: Compilation stops on valid code with ICE Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: pooly at ural2 dot hszk dot bme dot hu GCC build triplet: i686-pc-linux-gnu GCC host triplet: i686-pc-linux-gnu GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40512 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/40512] Compilation stops on valid code with ICE 2009-06-21 21:32 [Bug c++/40512] New: Compilation stops on valid code with ICE gcc-bugzilla at gcc dot gnu dot org @ 2009-06-21 22:09 ` rguenth at gcc dot gnu dot org 2010-05-05 0:44 ` paolo dot carlini at oracle dot com 2010-05-11 10:11 ` paolo dot carlini at oracle dot com 2 siblings, 0 replies; 4+ messages in thread From: rguenth at gcc dot gnu dot org @ 2009-06-21 22:09 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from rguenth at gcc dot gnu dot org 2009-06-21 22:09 ------- Confirmed. We ICE mangling trying to mangle decltype(T()*o[0]) #1 0x082ec4c0 in write_expression (expr=0xb7fdeed4) at /home/richard/src/trunk/gcc/cp/mangle.c:2415 2415 write_expression (operand); (gdb) p expr $1 = (tree) 0xb7fdeed4 (gdb) call debug_generic_expr (expr) o[0 Breakpoint 2, internal_error ( because that ARRAY_REF has a non-array object that is referenced: (gdb) call debug_tree (expr) <array_ref 0xb7fdeed4 arg 0 <parm_decl 0xb7d7039c o type <record_type 0xb7d6e380 M type_0 type_5 type_6 VOID align 8 symtab 0 alias set -1 canonical type 0xb7d6e380 full-name "class M<owidth, 3u, oT>" no-binfo use_template=1 interface-unknown chain <type_decl 0xb7d6e3f0 M>> used VOID file t.ii line 9 col 35 align 8 context <function_decl 0xb7d53280 mggggg> arg-type <record_type 0xb7d6e380 M>> arg 1 <integer_cst 0xb7cbf8a4 type <integer_type 0xb7ccf310 int> constant 0>> likely this testcase should be diagnosed as invalid. -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Keywords| |ice-on-invalid-code Last reconfirmed|0000-00-00 00:00:00 |2009-06-21 22:09:02 date| | Version|unknown |4.5.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40512 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/40512] Compilation stops on valid code with ICE 2009-06-21 21:32 [Bug c++/40512] New: Compilation stops on valid code with ICE gcc-bugzilla at gcc dot gnu dot org 2009-06-21 22:09 ` [Bug c++/40512] " rguenth at gcc dot gnu dot org @ 2010-05-05 0:44 ` paolo dot carlini at oracle dot com 2010-05-11 10:11 ` paolo dot carlini at oracle dot com 2 siblings, 0 replies; 4+ messages in thread From: paolo dot carlini at oracle dot com @ 2010-05-05 0:44 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from paolo dot carlini at oracle dot com 2010-05-05 00:44 ------- Jason, this one seems fixed both in mainline and 4_5-branch as part of the mangling updates. Can you confirm? -- paolo dot carlini at oracle dot com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jason at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40512 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/40512] Compilation stops on valid code with ICE 2009-06-21 21:32 [Bug c++/40512] New: Compilation stops on valid code with ICE gcc-bugzilla at gcc dot gnu dot org 2009-06-21 22:09 ` [Bug c++/40512] " rguenth at gcc dot gnu dot org 2010-05-05 0:44 ` paolo dot carlini at oracle dot com @ 2010-05-11 10:11 ` paolo dot carlini at oracle dot com 2 siblings, 0 replies; 4+ messages in thread From: paolo dot carlini at oracle dot com @ 2010-05-11 10:11 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from paolo dot carlini at oracle dot com 2010-05-11 10:11 ------- I think this can be safely closed as fixed for 4.5.0. -- paolo dot carlini at oracle dot com changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Known to work| |4.5.0 4.5.1 4.6.0 Resolution| |FIXED Target Milestone|--- |4.5.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40512 ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-05-11 10:11 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2009-06-21 21:32 [Bug c++/40512] New: Compilation stops on valid code with ICE gcc-bugzilla at gcc dot gnu dot org 2009-06-21 22:09 ` [Bug c++/40512] " rguenth at gcc dot gnu dot org 2010-05-05 0:44 ` paolo dot carlini at oracle dot com 2010-05-11 10:11 ` paolo dot carlini at oracle dot com
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