b48e37e8ee
Macros can be conditionally defined because stripping occurs before macro
expansion, but, the built-in macros were only added as part of the actual
expansion process and so couldn't be stripped to have definitions conditional
on cfg flags.
debug! is defined conditionally in terms of the debug config, expanding to
nothing unless the --cfg debug flag is passed (to be precise it expands to
`if false { normal_debug!(...) }` so that they are still type checked, and
to avoid unused variable lints).
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| .. | ||
| auxiliary | ||
| bench | ||
| codegen | ||
| compile-fail | ||
| debug-info | ||
| pretty | ||
| run-fail | ||
| run-pass | ||
| run-pass-fulldeps | ||