AMD General

Hi,

The attached patch fixes GDB failing to parse expressions that use "decltype" when the program contains a type named "decltype(nullptr)", which is the name compilers use for std::nullptr_t in debug information.

For example:

  (gdb) ptype decltype(global_var)
  A syntax error in expression, near `global_var)'.

The commit message in the patch explains the cause and the fix.

Tested on x86_64-linux, no regressions in gdb.cp and gdb.dwarf2.

(The patch is attached rather than inline because my mail client changes whitespace in inline patches.)

Thanks,
Victoria