Invalid order of generic parameters

[MahadMuhammad]

Invalid order of generic parameters

• Added more user-friendly message & hint for fixing ordering

Output:

• gcc/testsuite/rust/compile/generics13.rs

➜  gccrs-build gcc/crab1 /home/mahad/Desktop/mahad/gccrs/gcc/testsuite/rust/compile/generics13.rs
/home/mahad/Desktop/mahad/gccrs/gcc/testsuite/rust/compile/generics13.rs:1:12: error: invalid order for generic parameters: lifetime parameters must be declared prior to type and const parameters
    1 | struct Foo<A, 'a>; // { dg-error "invalid order for generic parameters: lifetimes should always come before types" }
      |            ^
      |            reorder the parameters: lifetimes, then consts and types

Analyzing compilation unit

Time variable                                   usr           sys          wall           GGC
 TOTAL                              :   0.00          0.00          0.00          146k
Extra diagnostic checks enabled; compiler may run slowly.
Configure with --enable-checking=release to disable checks.

gcc/rust/ChangeLog:

* parse/rust-parse-impl.h (Parser::parse_generic_params): Added fixit_hint and more user friendly message.

gcc/testsuite/ChangeLog:

* rust/compile/generics13.rs: for dejagnu,