I just tried to compile the following code void f( int, ...);
struct S { }; void g() { void f( int, ...); S t; f( 1, t); } void f( int i, ...) { } with GNU C compiler version 4.5 snapshot 20090409 and the compiler said jul17c.cc: In function 'void g()': jul17c.cc:15: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. This C++ source code used to work with the 20090402 snapshot. Here is valgrind helping out with a stack backtrace Invalid read of size 8 ==15025== at 0x40791E: joust (call.c:6802) ==15025== by 0x4080DA: tourney (call.c:6896) ==15025== by 0x40BCF3: perform_overload_resolution (call.c:2979) ==15025== by 0x416AE5: build_new_function_call (call.c:3019) ==15025== by 0x50B4EF: finish_call_expr (semantics.c:1994) ==15025== by 0x4BBEB3: cp_parser_postfix_expression (parser.c:4825) ==15025== by 0x4BC7B3: cp_parser_unary_expression (parser.c:5577) ==15025== by 0x4BD08C: cp_parser_binary_expression (parser.c:6233) ==15025== by 0x4BD473: cp_parser_assignment_expression (parser.c:6421) ==15025== by 0x4BD89F: cp_parser_expression (parser.c:6566) ==15025== by 0x4BDC33: cp_parser_expression_statement (parser.c:7129) ==15025== by 0x4B684A: cp_parser_statement (parser.c:7019) ==15025== Address 0x10 is not stack'd, malloc'd or (recently) free'd -- Summary: ice in C++ overload resolution Product: gcc Version: 4.4.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: dcb314 at hotmail dot com GCC host triplet: x86_64-suse-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39742