| // REQUIRES: OS=macosx |
| // |
| // This triggers a warning about ignored configuration macros; the warning then |
| // attempts to emit an excerpt from one of the clang importer's fake buffers |
| // (<swift-imported-modules>) which is full of 250kb of nulls. We want to check |
| // that we do not emit a gigantic block of nulls to stderr. |
| // |
| // RUN: %empty-directory(%t) |
| // RUN: %target-swift-frontend -typecheck -I %S/Inputs/custom-modules -import-objc-header %S/Inputs/no-fake-source-buffer-excerpts.h %s 2>%t/errors |
| // RUN: od -a < %t/errors | %FileCheck %s |
| // CHECK-NOT: nul nul nul nul |
