[Bug middle-end/66770] New: [6 Regression] 252.eon in SPEC CPU 2000 failed to build

[Bug middle-end/66770] New: [6 Regression] 252.eon in SPEC CPU 2000 failed to build

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66770

            Bug ID: 66770
           Summary: [6 Regression] 252.eon in SPEC CPU 2000 failed to
                    build
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: rguenther at suse dot de
  Target Milestone: ---

On Linux/x86-64, r225375 caused:

g++ -c -o ggQuaternion.o  -std=c++11 -DSPEC_CPU2000_LP64 -DHAS_ERRLIST    -I.
-DNDEBUG     -O2 -ffast-math   ggQuaternion.cc
ggQuaternion.cc: In function 'ggQuaternion ggSlerp(const ggQuaternion&, const
ggQuaternion&, double)':
ggQuaternion.cc:284:21: internal compiler error: Segmentation fault
     if ((1.0-cosom)>ggEpsilon){
                     ^
0xd765bf crash_signal
        ../../src-trunk/gcc/toplev.c:360
0xb02e3d tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
        ../../src-trunk/gcc/tree.h:2980
0xb02e3d generic_simplify(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
        /export/gnu/import/git/gcc-test-spec/bld/gcc/generic-match.c:16678
0x9e4d57 fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
        ../../src-trunk/gcc/fold-const.c:9413
0xa090bc fold(tree_node*)
        ../../src-trunk/gcc/fold-const.c:12984
0x720bcb cp_build_binary_op(unsigned int, tree_code, tree_node*, tree_node*,
int)
        ../../src-trunk/gcc/cp/typeck.c:5059
0x5dfe9d build_new_op_1
        ../../src-trunk/gcc/cp/call.c:5668
0x5e0b5e build_new_op(unsigned int, tree_code, int, tree_node*, tree_node*,
tree_node*, tree_node**, int)
        ../../src-trunk/gcc/cp/call.c:5713
0x70f14e build_x_binary_op(unsigned int, tree_code, tree_node*, tree_code,
tree_node*, tree_code, tree_node**, int)
        ../../src-trunk/gcc/cp/typeck.c:3798
0x6e4b30 cp_parser_binary_expression
        ../../src-trunk/gcc/cp/parser.c:8283
0x6e514f cp_parser_assignment_expression
        ../../src-trunk/gcc/cp/parser.c:8405
0x6e7cf1 cp_parser_expression
        ../../src-trunk/gcc/cp/parser.c:8559
0x6f15ad cp_parser_condition
        ../../src-trunk/gcc/cp/parser.c:10371
0x6fddb5 cp_parser_selection_statement
        ../../src-trunk/gcc/cp/parser.c:10143
0x6fddb5 cp_parser_statement
        ../../src-trunk/gcc/cp/parser.c:9676
0x6fe302 cp_parser_statement_seq_opt
        ../../src-trunk/gcc/cp/parser.c:10089
0x6fe45b cp_parser_compound_statement
        ../../src-trunk/gcc/cp/parser.c:10043
0x6fde35 cp_parser_selection_statement
        ../../src-trunk/gcc/cp/parser.c:10172
0x6fde35 cp_parser_statement
        ../../src-trunk/gcc/cp/parser.c:9676
0x6fe302 cp_parser_statement_seq_opt
        ../../src-trunk/gcc/cp/parser.c:10089
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
specmake[3]: *** [ggQuaternion.o] Error 1

[Bug middle-end/66770] [6 Regression] 252.eon in SPEC CPU 2000 failed to build

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66770

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2015-07-06
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot gnu.org
   Target Milestone|---                         |6.0
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.

[Bug middle-end/66770] [6 Regression] 252.eon in SPEC CPU 2000 failed to build

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66770

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
This looks like a dup of PR66759 to me which has a reduced testcase and shows
a bug in folding of REAL_CST - x CMP REAL_CST.

[Bug middle-end/66770] [6 Regression] 252.eon in SPEC CPU 2000 failed to build

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66770

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed indeed.

*** This bug has been marked as a duplicate of bug 66759 ***