http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53826
Bug #: 53826
Summary: [4.8 Regression] [alpha]: ICE in fold_convert_loc, at
fold-const.c:2008
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: ubiz...@gmail.com
Host: x86_64-pc-linux-gnu
Target: alpha-linux-gnu
Created attachment 27728
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27728
Preprocessed source
Recent regression, triggered with libstdc++ testcase:
crosscompiler from x86_64-pc-linux-gnu to alpha-linux-gnu:
~/gcc-build-alpha/gcc/cc1plus -O2 -std=gnu++0x -quiet tuple_cat.ii
/home/uros/gcc-svn/trunk/libstdc++-v3/testsuite/20_util/tuple/creation_functions/tuple_cat.cc:
In function ‘int main()’:
/home/uros/gcc-svn/trunk/libstdc++-v3/testsuite/20_util/tuple/creation_functions/tuple_cat.cc:131:1:
internal compiler error: in fold_convert_loc, at fold-const.c:2008
}
^
Please submit a full bug report,
(gdb) bt
#0 internal_error (gmsgid=gmsgid@entry=0xee36c5 "in %s, at %s:%d") at
../../gcc-svn/trunk/gcc/diagnostic.c:951
#1 0x0000000000d3e614 in fancy_abort (file=file@entry=0xe0cbc8
"../../gcc-svn/trunk/gcc/fold-const.c", line=line@entry=2008,
function=function@entry=0xe0bba0 "fold_convert_loc")
at ../../gcc-svn/trunk/gcc/diagnostic.c:1011
#2 0x000000000082d6be in fold_convert_loc (loc=loc@entry=0,
type=0x7ffff146d348, arg=<optimized out>) at
../../gcc-svn/trunk/gcc/fold-const.c:2008
#3 0x0000000000bbc2e6 in build_zero_cst (type=<optimized out>) at
../../gcc-svn/trunk/gcc/tree.c:1668
#4 0x0000000000a783c9 in init_subtree_with_zero
(access=access@entry=0x1579060, gsi=gsi@entry=0x7fffffffda50,
insert_after=insert_after@entry=0 '\000', loc=loc@entry=2329653)
at ../../gcc-svn/trunk/gcc/tree-sra.c:2521
#5 0x0000000000a783a9 in init_subtree_with_zero (access=<optimized out>,
gsi=gsi@entry=0x7fffffffda50, insert_after=insert_after@entry=0 '\000',
loc=2329653)
at ../../gcc-svn/trunk/gcc/tree-sra.c:2532
#6 0x0000000000a80af1 in sra_modify_constructor_assign (gsi=0x7fffffffda50,
stmt=<synthetic pointer>) at ../../gcc-svn/trunk/gcc/tree-sra.c:2815
#7 sra_modify_assign (gsi=0x7fffffffda50, stmt=<synthetic pointer>) at
../../gcc-svn/trunk/gcc/tree-sra.c:2906
#8 sra_modify_function_body () at ../../gcc-svn/trunk/gcc/tree-sra.c:3141
#9 perform_intra_sra () at ../../gcc-svn/trunk/gcc/tree-sra.c:3247
(gdb) f 2
#2 0x000000000082d6be in fold_convert_loc (loc=loc@entry=0,
type=0x7ffff146d348, arg=<optimized out>) at
../../gcc-svn/trunk/gcc/fold-const.c:2008
2008 gcc_unreachable ();
(gdb) p debug_tree (type)
<nullptr_type 0x7ffff146d348 decltype(nullptr) sizes-gimplified public
unsigned type_6 DI
size <integer_cst 0x7ffff1345700 type <integer_type 0x7ffff13530a8
bitsizetype> constant 64>
unit size <integer_cst 0x7ffff1345720 type <integer_type 0x7ffff1353000
sizetype> constant 8>
align 8 symtab 0 alias set 20 canonical type 0x7ffff146d348
pointer_to_this <pointer_type 0x7fffeeda4348> reference_to_this
<reference_type 0x7fffef114b28>>
$3 = void
(gdb) p debug_tree (orig)
<integer_type 0x7ffff13535e8 int sizes-gimplified public type_6 SI
size <integer_cst 0x7ffff1345a80 type <integer_type 0x7ffff13530a8
bitsizetype> constant 32>
unit size <integer_cst 0x7ffff1345aa0 type <integer_type 0x7ffff1353000
sizetype> constant 4>
align 32 symtab 0 alias set 2 canonical type 0x7ffff13535e8 precision 32
min <integer_cst 0x7ffff1345a20 -2147483648> max <integer_cst 0x7ffff1345a40
2147483647>
pointer_to_this <pointer_type 0x7ffff13602a0> reference_to_this
<reference_type 0x7ffff04bf2a0>>
$4 = void
gcc needs to handle NULLPTR_TYPE here.
