process: preserve the exit code more

If the process is killed by a signal, preserve the exit code as it would
be reported by $?.

4 files changed, 19 insertions, 16 deletions

diff --git a/src/process.c b/src/process.c
index ee387bb..3fc866f 100644
--- a/src/process.c
+++ b/src/process.c
@@ -42,6 +42,8 @@ static int wait_for_child(pid_t pid, int *ec)
 
 	if (WIFEXITED(status))
 		*ec = WEXITSTATUS(status);
+	else if (WIFSIGNALED(status))
+		*ec = status; /* Same as $?. */
 	else
 		*ec = -1;
 
diff --git a/test/py/conftest.py b/test/py/conftest.py
index 9bacab4..ab2cbfb 100644
--- a/test/py/conftest.py
+++ b/test/py/conftest.py
@@ -99,9 +99,9 @@ def base_cmd_line(pytestconfig):
     cmd_line = CmdLine.unbuffered()
     valgrind = pytestconfig.getoption(PARAM_VALGRIND.codename)
     if valgrind is not None:
-        # Signal to Valgrind that ci.sh should obviously be exempt from memory
-        # leak checking:
-        cmd_line = CmdLine.wrap(CmdLine(valgrind, '--trace-children-skip=*/ci.sh', '--'), cmd_line)
+        # Signal to Valgrind that ci scripts should obviously be exempt from
+        # memory leak checking:
+        cmd_line = CmdLine.wrap(CmdLine(valgrind, '--trace-children-skip=*/ci', '--'), cmd_line)
     return cmd_line
 
 
diff --git a/test/py/lib/test_repo.py b/test/py/lib/test_repo.py
index aca6dfa..e3e875b 100644
--- a/test/py/lib/test_repo.py
+++ b/test/py/lib/test_repo.py
@@ -40,7 +40,7 @@ class TestRepo(Repo):
     # Prevent Pytest from discovering test cases in this class:
     __test__ = False
 
-    def __init__(self, path, ci_script='ci.sh'):
+    def __init__(self, path, ci_script='ci'):
         super().__init__(path)
 
         self.runs_dir = os.path.join(self.path, 'runs')
@@ -78,9 +78,12 @@ class TestRepo(Repo):
         runs_dir = shlex.quote(self.runs_dir)
         return CI_SCRIPT.format(runs_dir=runs_dir)
 
-    def count_run_files(self):
+    def _count_run_files(self):
         return len([name for name in os.listdir(self.runs_dir) if os.path.isfile(os.path.join(self.runs_dir, name))])
 
+    def run_files_are_present(self, expected):
+        assert expected == self._count_run_files()
+
 
 class TestRepoOutput(TestRepo, abc.ABC):
     __test__ = False
@@ -223,24 +226,22 @@ class TestRepoSegfault(TestRepo):
 
     def __init__(self, repo_path, prog_path):
         self.prog_path = prog_path
-        self.prog_name = os.path.basename(prog_path)
         super().__init__(repo_path)
 
-        shutil.copy(prog_path, self.path)
-        self.run('git', 'add', '--', self.prog_name)
-        self.run('git', 'commit', '-q', '-m', 'add test program')
-
     @staticmethod
     def codename():
         return 'segfault'
 
-    def format_ci_script(self):
-        script = super().format_ci_script()
-        added = r'exec {prog}'.format(prog=shlex.quote(f'./{self.prog_name}'))
-        return f'{script}\n{added}\n'
+    def write_ci_script(self):
+        shutil.copy(self.prog_path, self.ci_script_path)
 
     def run_exit_code_matches(self, ec):
-        return ec < 0
+        # If WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV, then the $?
+        # would be 139.
+        return ec == 139
 
     def run_output_matches(self, output):
         return "Started the test program.\n" == output.decode()
+
+    def run_files_are_present(self, *args):
+        return True
diff --git a/test/py/test_repo.py b/test/py/test_repo.py
index 4fd6b09..49d5a32 100644
--- a/test/py/test_repo.py
+++ b/test/py/test_repo.py
@@ -61,7 +61,7 @@ def _test_repo_internal(env, repo, numof_processes, runs_per_process):
         for proc in processes:
             proc.join()
 
-    assert numof_runs == repo.count_run_files()
+    repo.run_files_are_present(numof_runs)
 
     runs = env.db.get_all_runs()
     assert numof_runs == len(runs)