// The undefined symbol should not cause link errors, and we should
// obtain the expected coverage report.

// Test the --coverage option.
RUN: rm -rf %t0 && split-file %s %t0 && cd %t0
RUN: %clang bar.c main.c undef.c --coverage -c
RUN: ar -X32_64 -rv libfoo.a undef.o bar.o
RUN: %clang main.o -L. -lfoo --coverage -o main.exe
RUN: %run ./main.exe
RUN: llvm-cov gcov -t main.gcda |  FileCheck --check-prefix=MAIN %s
RUN: llvm-cov gcov -t bar.gcda |  FileCheck --check-prefix=BAR %s

// Test the pgogen -fprofile-arcs -ftest-coverage option combination.
RUN: rm -rf %t1 && split-file %s %t1 && cd %t1
RUN: %clang_pgogen bar.c main.c undef.c -fprofile-arcs -ftest-coverage -c
RUN: ar -X32_64 -rv libfoo.a undef.o bar.o
RUN: %clang_pgogen main.o -L. -lfoo -fprofile-generate -fprofile-arcs -ftest-coverage -o main.exe
RUN: %run ./main.exe
RUN: llvm-cov gcov -t main.gcda |  FileCheck --check-prefix=MAIN %s
RUN: llvm-cov gcov -t bar.gcda |  FileCheck --check-prefix=BAR %s

// Test the pgogen -Wl,-bcdtors:mbr option combination.
RUN: rm -rf %t2 && split-file %s %t2 && cd %t2
RUN: %clang_pgogen bar.c main.c undef.c -fprofile-arcs -ftest-coverage -c
RUN: ar -X32_64 -rv libfoo.a undef.o bar.o
RUN: %clang_pgogen main.o -L. -lfoo -fprofile-generate -fprofile-arcs -ftest-coverage -Wl,-bcdtors:mbr -o main.exe
RUN: %run ./main.exe
RUN: llvm-cov gcov -t main.gcda |  FileCheck --check-prefix=MAIN %s
RUN: llvm-cov gcov -t bar.gcda |  FileCheck --check-prefix=BAR %s

MAIN:        1:    2:int main() {
MAIN:        1:    3:  return bar();
BAR:         1:    1:int bar() {
BAR:         1:    2:  return 0;

//--- main.c
int bar();
int main() {
  return bar();
}


//--- bar.c
int bar() {
  return 0;
}

//--- undef.c
void undef_func();
void foo() {
  undef_func();
}