================
@@ -990,6 +990,12 @@ def warn_main_redefined : Warning<"variable named 'main'
with external linkage "
"has undefined behavior">, InGroup<Main>;
def ext_main_used : Extension<
"referring to 'main' within an expression is a Clang extension">,
InGroup<Main>;
+def ext_main_invalid_linkage_specification : ExtWarn<
+ "'main' should not be "
+ "'extern \"%select{C|C++}0\"'">, InGroup<Main>;
+def err_main_invalid_linkage_specification : Error<
+ "'main' should not be "
+ "'extern \"%select{C|C++}0\"'">;
----------------
Sirraide wrote:
Thinking about this again, I think making these an error by default is a bit
too strong; no-one else does that by default; the most you’ll get is a warning
from EDG and a pedantic warning from GCC. I think making this a single
`ExtWarn` is fine.
https://github.com/llvm/llvm-project/pull/101853
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