ref: 75ce230dced14c4a622d20e41738474193a8817a
dir: /test/asm/deprecated-pi.err/
warning: deprecated-pi.asm(2): [-Wobsolete] `_PI` is deprecated; use 3.14159 ERROR: deprecated-pi.asm(3): Built-in symbol '_PI' cannot be purged error: Assembly aborted (1 error)!