# REQUIRES: system-darwin
# Test the rate-limiting of module not found warnings.
# RUN: rm -rf %t
# RUN: mkdir -p %t

# RUN: echo 'module "C" { header "c.h" }' >%t/module.modulemap
# RUN: echo 'struct c {};' >>%t/c.h
# RUN: echo '@import C;'                  >%t/a.m
# RUN: echo 'struct a { struct c c; } a;' >>%t/a.m
# RUN: echo '@import C;'                  >%t/b.m
# RUN: echo 'struct b { struct c c; } b;' >>%t/b.m
# RUN: echo 'int main() {}'               >>%t/b.m

# RUN: %clang_host -fmodules -Xclang -fmodules-cache-path=%t/cache -I%t -g -gmodules %t/a.m -o %t/a.o -c
# RUN: %clang_host -fmodules -Xclang -fmodules-cache-path=%t/cache -I%t -g -gmodules %t/b.m -o %t/b.o -c
# RUN: %clang_host %t/a.o %t/b.o -o %t/a.out
# RUN: rm -rf %t/cache
# RUN: %lldb %t/a.out -o "b main" -o run -o "expr a" -o "expr b" -o q 2>&1 | FileCheck %s
# CHECK: {{[ab]}}.o{{.*}}/cache/{{.*}}/C-{{.*}}.pcm' does not exist
# CHECK-NOT: /cache/{{.*}}/C-{.*}.pcm' does not exist
# CHECK: {{[ab]}}.o{{.*}}/cache/{{.*}}/C-{{.*}}.pcm' does not exist
# CHECK-NOT: /cache/{{.*}}/C-{.*}.pcm' does not exist