macOS failure on the master branch

[yutannihilation]

Since a while ago, the master fails with the following error on macOS. Considering

• this happens on several macOS runners, not only on the one with R-devel
• the generated bindings don't contain any suspicious changes.

I think this is due to some change on the macOS runner (e.g., the LLVM version)

  running 3 tests
  test src/lib.rs - (line 18) - compile ... ok
  test src/lib.rs - (line 44) ... ignored
  error[E0425]: cannot find value `logx` in this scope
   --> target/debug/build/libR-sys-fc3f88ec37a77774/out/bindings.rs:4064:11
    |
  3 | log (exp (logx) + exp (logy))
  test target/debug/build/libR-sys-fc3f88ec37a77774/out/bindings.rs - Rf_logspace_add (line 4063) ... FAILED
    |           ^^^^ not found in this scope
  
  
  failures:
  error[E0425]: cannot find value `logy` in this scope
  
   --> target/debug/build/libR-sys-fc3f88ec37a77774/out/bindings.rs:4064:24
  failures:
    |
      target/debug/build/libR-sys-fc3f88ec37a77774/out/bindings.rs - Rf_logspace_add (line 4063)
  3 | log (exp (logx) + exp (logy))
  
    |                        ^^^^ not found in this scope
  test result: FAILED. 1 passed; 1 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.14s
  
  
  error[E0425]: cannot find function `exp` in this scope
   --> target/debug/build/libR-sys-fc3f88ec37a77774/out/bindings.rs:4064:6
    |
  3 | log (exp (logx) + exp (logy))
    |      ^^^ not found in this scope
  
  error[E0425]: cannot find function `exp` in this scope
   --> target/debug/build/libR-sys-fc3f88ec37a77774/out/bindings.rs:4064:19
    |
  3 | log (exp (logx) + exp (logy))
    |                   ^^^ not found in this scope
  
  error[E0425]: cannot find function `log` in this scope
   --> target/debug/build/libR-sys-fc3f88ec37a77774/out/bindings.rs:4064:1
    |
  3 | log (exp (logx) + exp (logy))
    | ^^^ not found in this scope
  
  error: aborting due to 5 previous errors
  
  For more information about this error, try `rustc --explain E0425`.
  Couldn't compile the test.error: doctest failed, to rerun pass `--doc`

[yutannihilation]

Ah, maybe this line of log (... is treated as a doc test...? That's super annoying...

libR-sys/bindings/bindings-macos-x86_64-R4.2.rs

Line 4061 in 34086e2

#[doc = "Compute the log of a sum or difference from logs of terms, i.e.,\n\n log (exp (logx) + exp (logy))\n or log (exp (logx) - exp (logy))\n\n without causing overflows or throwing away too much accuracy:"]