[llvm-bugs] [Bug 43391] New: clang-cl driver does not add -fimplicit-module-maps

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=43391

            Bug ID: 43391
           Summary: clang-cl driver does not add -fimplicit-module-maps
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: Driver
          Assignee: unassignedclangbugs at nondot.org
          Reporter: trass3r at gmail.com
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

int main()
{}

$ clang++ -fmodules -fmodules-cache-path=cache -v test.cpp
$ clang-cl -Xclang -fmodules -Xclang -fmodules-cache-path=cache -v test.cpp

The clang++ variant automatically adds -fimplicit-module-maps as described in
https://clang.llvm.org/docs/Modules.html#command-line-parameters.
The clang-cl line doesn't, making it silently fail to use modules.

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