expected initializer before ‘GenericPlatformTypes’

expected class-name before ‘{’ token

‘AnsiChar’ in ‘using p::PlatformTypes = struct p::LinuxPlatformTypes’ {aka ‘struct p::LinuxPlatformTypes’} does not name a type

‘WideChar’ in ‘using p::PlatformTypes = struct p::LinuxPlatformTypes’ {aka ‘struct p::LinuxPlatformTypes’} does not name a type

‘Char8’ in ‘using p::PlatformTypes = struct p::LinuxPlatformTypes’ {aka ‘struct p::LinuxPlatformTypes’} does not name a type

‘Char16’ in ‘using p::PlatformTypes = struct p::LinuxPlatformTypes’ {aka ‘struct p::LinuxPlatformTypes’} does not name a type

‘Char32’ in ‘using p::PlatformTypes = struct p::LinuxPlatformTypes’ {aka ‘struct p::LinuxPlatformTypes’} does not name a type

‘uPtr’ in ‘using p::PlatformTypes = struct p::LinuxPlatformTypes’ {aka ‘struct p::LinuxPlatformTypes’} does not name a type

‘iPtr’ in ‘using p::PlatformTypes = struct p::LinuxPlatformTypes’ {aka ‘struct p::LinuxPlatformTypes’} does not name a type

‘ssizet’ in ‘using p::PlatformTypes = struct p::LinuxPlatformTypes’ {aka ‘struct p::LinuxPlatformTypes’} does not name a type

too many template headers for ‘p::IsUpper’ (should be 0)

too many template headers for ‘p::IsLower’ (should be 0)

too many template headers for ‘p::IsAlpha’ (should be 0)

too many template headers for ‘p::IsGraph’ (should be 0)

too many template headers for ‘p::IsPrint’ (should be 0)

too many template headers for ‘p::IsPunct’ (should be 0)

too many template headers for ‘p::IsAlnum’ (should be 0)

too many template headers for ‘p::IsDigit’ (should be 0)

too many template headers for ‘p::IsHexDigit’ (should be 0)

too many template headers for ‘p::IsWhitespace’ (should be 0)

Failed to add apt key via server keyserver.ubuntu.com: Error: Command failed with exit code 2: sudo 'gpg' '--no-default-keyring' '--keyring' 'gnupg-ring:keyserver.ubuntu.com/ubuntu-toolchain-r-test.gpg' '--keyserver' 'keyserver.ubuntu.com' '--recv-keys' '1E9377A2BA9EF27F'