[Bug tree-optimization/65823] New: [6 Regression] ICE in gcc.c-torture/execute/stdarg-2.c -O0/-O1 for arm

vries at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Tue Apr 21 07:41:00 GMT 2015


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65823

            Bug ID: 65823
           Summary: [6 Regression] ICE in gcc.c-torture/execute/stdarg-2.c
                    -O0/-O1 for arm
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vries at gcc dot gnu.org

Comparing:
- https://gcc.gnu.org/ml/gcc-testresults/2015-04/msg02096.html (r222178) and
- https://gcc.gnu.org/ml/gcc-testresults/2015-04/msg02042.html (r222164)
shows two new stdarg-2.c failures for arm:
...
FAIL: gcc.c-torture/execute/stdarg-2.c   -O0  (internal compiler error)
FAIL: gcc.c-torture/execute/stdarg-2.c   -O0  (test for excess errors)
...

According to https://gcc.gnu.org/ml/gcc-patches/2015-04/msg01114.html :
...
/projects/.../src/gcc/gcc/testsuite/gcc.c-torture/execute/stdarg-2.c:
In function 'f3':
/projects/.../src/gcc/gcc/testsuite/gcc.c-torture/execute/stdarg-2.c:61:1:
error: incorrect sharing of tree nodes
aps[4]
# .MEM_5 = VDEF <.MEM_11>
aps[4] = aps[4];
/projects/.../src/gcc/gcc/testsuite/gcc.c-torture/execute/stdarg-2.c:61:1:
internal compiler error: verify_gimple failed
0xae4893 verify_gimple_in_cfg(function*, bool)
    /projects/.../src/gcc/gcc/tree-cfg.c:5136
0x9e3f2f execute_function_todo
    /projects/.../src/gcc/gcc/passes.c:1946
0x9e48d3 execute_todo
    /projects/.../src/gcc/gcc/passes.c:2003
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.
...



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