[PATCH 6/8] [gdb/rust] Fix literal truncation

[Tom Tromey]

>>>>> "Tom" == Tom de Vries via Gdb-patches <gdb-patches@sourceware.org> writes:

Tom> Make sure we error out on overflow instead of truncating in all cases.
Tom> I've used as overflow string: "Integer literal is too large", based
Tom> on what I found at
Tom> <rust-lang/rust>/src/test/ui/parser/int-literal-too-large-span.rs
Tom> but perhaps someone has a better idea.

Tom> -      value = strtoulst (number.c_str () + offset, NULL, radix);
Tom> +      const char *trailer;
Tom> +      value = strtoulst (number.c_str () + offset, &trailer, radix);
Tom> +      if (*trailer != '\0')
Tom> +	error ("Integer literal is too large");

This seems fine, though I think it's normal to use _() around the
argument to error.

Tom> +	} elseif { $lang == "rust" } {
Tom> +	    set re_overflow "Integer literal is too large"

I don't mind if this is there, but normally the Rust lexer uses unit
tests.  They are in rust-parse.c, see rust_lex_tests.

Tom