The exact version of GCC: 4.4.1 The system type: Linux version 2.6.9-67.EL (Red Hat 3.4.6-8)
The options given when GCC was configured/built: ../../gcc/configure --target=testtarget --prefix=/usr/local/testtarget --enable-target-optspace --enable-checking --disable-nls --enable-languages=c,c++ Thread model: single The complete command line that triggers the bug: testtarget-gcc -c loop.c I'm trying to define a nonstandard type for 12-bit scalar variables based on a target-dependent PSI mode. In my backend's testtarget-modes.def I have: PARTIAL_INT_MODE (SI); In my backend's testtarget_init_builtins() function (TARGET_INIT_BUILTINS) I have the following: /* Create builtin type for 12-bit integer numbers (partial int) */ tree t = make_unsigned_type (9); (*lang_hooks.types.register_builtin_type) (t, "mybit12_t"); SET_TYPE_MODE (t, PSImode); the compiler output: testtarget-gcc: Internal error: Segmentation fault (program cc1) Please submit a full bug report. See <http://gcc.gnu.org/bugs.html> for instructions. The resulting gcc compiler crashes (ICE) when it tries to convert any integer into my new type. I tried to debug it and what I see is that it goes back and forth until the stack is exhausted between two functions: convert and convert_to_integer: #0 convert_to_integer (type=0xb7eb20d0, expr=0xb7e3caf0) at ../../../gcc/gcc/convert.c:389 #1 0x08079974 in convert (type=0xb7eb20d0, expr=0xb7e3caf0) at ../../../gcc/gcc/c-convert.c:101 #2 0x08080edc in convert_and_check (type=0xb7eb20d0, expr=0xb7e3caf0) at ../../../gcc/gcc/c-common.c:1812 #3 0x08068c5c in convert_for_assignment (type=0xb7eb20d0, rhs=0xb7e3caf0, errtype=ic_assign, fundecl=0x0, function=0x0, parmnum=0) at ../../../gcc/gcc/c-typeck.c:4212 #4 0x080720b6 in build_modify_expr (location=1619, lhs=0xb7ec0000, modifycode=NOP_EXPR, rhs=0xb7e3caf0) at ../../../gcc/gcc/c-typeck.c:3948 #5 0x080a984c in c_parser_expr_no_commas (parser=0xb7ebe0fc, after=0x0) at ../../../gcc/gcc/c-parser.c:4421 #6 0x080a9914 in c_parser_expression (parser=0xb7e3caf0) at ../../../gcc/gcc/c-parser.c:5664 #7 0x080af9fd in c_parser_for_statement (parser=0xb7ebe0fc) at ../../../gcc/gcc/c-parser.c:4101 #8 0x080a63de in c_parser_statement_after_labels (parser=0xb7ebe0fc) at ../../../gcc/gcc/c-parser.c:3700 #9 0x080a71b5 in c_parser_compound_statement_nostart (parser=0xb7ebe0fc) at ../../../gcc/gcc/c-parser.c:3470 #10 0x080aec1b in c_parser_compound_statement (parser=0xb7ebe0fc) at ../../../gcc/gcc/c-parser.c:3318 #11 0x080af1e7 in c_parser_declaration_or_fndef (parser=0xb7ebe0fc, fndef_ok=1 '\001', empty_ok=1 '\001', nested=0 '\0', start_attr_ok=Variable "start_attr_ok" is not available. ) at ../../../gcc/gcc/c-parser.c:1307 #12 0x080b0e95 in c_parser_external_declaration (parser=0xb7ebe0fc) at ../../../gcc/gcc/c-parser.c:1076 #13 0x080b1c79 in c_parse_file () at ../../../gcc/gcc/c-parser.c:979 #14 0x0809af6c in c_common_parse_file (set_yydebug=0) at ../../../gcc/gcc/c-opts.c:1252 #15 0x0832a409 in toplev_main (argc=12, argv=0xbff91014) at ../../../gcc/gcc/toplev.c:970 #16 0x080bddb7 in main (argc=12, argv=0xbff91014) at ../../../gcc/gcc/main.c:35 The preprocessed file that triggers the bug: int main (int argc, char *argv[]) { mybit12_t i; for (i = 0; i < 20; i++) printf ("%d", i); return 0; } -- Summary: ICE on converting target-dependent PSImode variable Product: gcc Version: 4.4.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: lyudalev at gmail dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42310
