| // Test that compiling using a PCH doesn't leak file descriptors. |
| // https://bugs.chromium.org/p/chromium/issues/detail?id=924225 |
| // |
| // This test uses ulimit. |
| // UNSUPPORTED: system-windows |
| // |
| // Set up source files. lib/lib.h includes lots of lib*.h files in that dir. |
| // client.c includes lib/lib.h, and also the individual files directly. |
| // |
| // RUN: rm -rf %t |
| // RUN: mkdir %t |
| // RUN: cd %t |
| // RUN: mkdir lib |
| // RUN: %python -c "from pathlib import Path; list(map(lambda i: Path(f'lib/lib{i}.h').touch(), range(1, 301)))" |
| // RUN: %python -c "for i in range(1, 301): print(f'#include \"lib{i}.h\"')" > lib/lib.h |
| // RUN: echo "#include \"lib/lib.h\"" > client.c |
| // RUN: %python -c "for i in range(1, 301): print(f'#include \"lib/lib{i}.h\"')" > client.c |
| // |
| // We want to verify that we don't hold all the files open at the same time. |
| // This is important e.g. on mac, which has a low default FD limit. |
| // RUN: ulimit -n 100 |
| // |
| // Test without PCH. |
| // RUN: %clang_cc1 -fsyntax-only -Ilib/ client.c |
| // |
| // Test with PCH. |
| // RUN: %clang_cc1 -emit-pch -o pch -Ilib/ client.c |
| // RUN: %clang_cc1 -include-pch pch -Ilib/ client.c -fsyntax-only |
