[flang] [clang] [flang][Driver] Let the linker fail on multiple definitions of main() (PR #73124)

[Michael Klemm via cfe-commits]

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@@ -0,0 +1,13 @@
+! RUN: %clang -x c -o %t.c-part -c %s.c-part
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mjklemm wrote:

That has worked.  I haven't thought about that at all, so many thanks for the suggestion.  This greatly simplifies things!

https://github.com/llvm/llvm-project/pull/73124