"reichelt at gcc dot gnu dot org" <[EMAIL PROTECTED]> writes:
| The error message reads: | | bug.cc: In function 'void foo(const A<N>&) [with int N = 0]': | bug.cc:7: instantiated from here | bug.cc:3: error: no match for 'operator-' in '-((const A<0>&)#'convert_expr' | not supported by dump_expr#<expression error>)' | | With gcc 4.0.0 I get the following message instead: | | bug.cc: In function 'void foo(const A<N>&) [with int N = 0]': | bug.cc:7: instantiated from here | bug.cc:3: error: no match for 'operator-' in '-((const A<0>&)(+ a))' | | I don't know why the plus sign appears before "a", The plus sign is a bogosity in the tree representation, not correctly understaood by the pretty-printer, which cannot differentiate between conversion from reference to pointer, lvalue->rvalue conversion and real unary plus. They usually appear under the cover of CONVERT_EXPR. | but this suggests that | the regression is related to the recent introduction of UNARY_PLUS_EXPR: | http://gcc.gnu.org/ml/gcc-patches/2005-05/msg02580.html Indeed. -- Gaby
