Peter Klausler 97e3f605d5 [flang] Don't allow non-standard data conversions of potentially abse… (#87391) ...

…nt arguments

Arguments to the intrinsic functions MAX and MIN after the first two are
optional. When these actual arguments might not be present at run time,
emit a compilation time error if they require data conversion (a
non-standard but nearly universal language extension); such a conversion
would crash if the argument was absent.

Other compilers either disallow data conversions entirely on MAX/MIN or
crash at run time if a converted argument is absent.

Fixes https://github.com/llvm/llvm-project/issues/87046.

2024-04-08 11:56:36 -07:00

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