|  | // This tests that the compiler wouldn't crash if the module path misses | 
|  |  | 
|  | // RUN: rm -rf %t | 
|  | // RUN: mkdir -p %t/subdir | 
|  | // RUN: echo "export module C;" >> %t/subdir/C.cppm | 
|  | // RUN: echo -e "export module B;\nimport C;" >> %t/B.cppm | 
|  | // RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/subdir/C.cppm -o %t/subdir/C.pcm | 
|  | // RUN: %clang_cc1 -std=c++20 -emit-module-interface -fprebuilt-module-path=%t/subdir %t/B.cppm -o %t/B.pcm | 
|  | // RUN: %clang_cc1 -std=c++20 -fprebuilt-module-path=%t %s -fsyntax-only -verify -Wno-read-modules-implicitly | 
|  |  | 
|  | import B; | 
|  | import C; // expected-error {{module 'C' is needed but has not been provided, and implicit use of module files is disabled}} |