added separate program to test stack trace

.github/workflows/CI-unixish.yml

@@ -421,7 +421,7 @@ jobs:
       - name: Test Signalhandler
         run: |
           cmake -S . -B cmake.output.signal -G "Unix Makefiles" -DBUILD_TESTS=On
-          cmake --build cmake.output.signal --target test-signalhandler -- -j$(nproc)
+          cmake --build cmake.output.signal --target test-signalhandler test-stacktrace -- -j$(nproc)
           cp cmake.output.signal/bin/test-s* .
           python3 -m pytest -Werror --strict-markers -vv test/signal/test-*.py
 

test/signal/CMakeLists.txt

@@ -7,4 +7,14 @@ target_include_directories(test-signalhandler PRIVATE ${PROJECT_SOURCE_DIR}/cli
 target_compile_options_safe(test-signalhandler -Wno-missing-declarations)
 target_compile_options_safe(test-signalhandler -Wno-missing-prototypes)
 # required for backtrace() to produce function names
-target_link_options(test-signalhandler PRIVATE -rdynamic)
+target_link_options(test-signalhandler PRIVATE -rdynamic)
+
+add_executable(test-stacktrace
+        test-stacktrace.cpp
+        ${PROJECT_SOURCE_DIR}/cli/stacktrace.cpp)
+target_include_directories(test-stacktrace PRIVATE ${PROJECT_SOURCE_DIR}/cli ${PROJECT_SOURCE_DIR}/lib)
+# names for static functions are omitted from trace
+target_compile_options_safe(test-stacktrace -Wno-missing-declarations)
+target_compile_options_safe(test-stacktrace -Wno-missing-prototypes)
+# required for backtrace() to produce function names
+target_link_options(test-stacktrace PRIVATE -rdynamic)

test/signal/test-stacktrace.cpp

@@ -0,0 +1,41 @@
+/*
+ * Cppcheck - A tool for static C/C++ code analysis
+ * Copyright (C) 2007-2024 Cppcheck team.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "stacktrace.h"
+
+// static functions are omitted from trace
+
+void my_func_2()
+{
+    print_stacktrace(stdout, 0, true, -1);
+}
+
+void my_func()
+{
+    my_func_2();
+}
+
+int main(int argc, const char * const argv[])
+{
+    if (argc != 2)
+        return 1;
+
+    my_func();
+
+    return 0;
+}

test/signal/test-stacktrace.py

@@ -0,0 +1,38 @@
+import subprocess
+import os
+import sys
+
+def _lookup_cppcheck_exe(exe_name):
+    # path the script is located in
+    script_path = os.path.dirname(os.path.realpath(__file__))
+
+    if sys.platform == "win32":
+        exe_name += ".exe"
+
+    for base in (script_path + '/../../', './'):
+        for path in ('', 'bin/', 'bin/debug/'):
+            exe_path = base + path + exe_name
+            if os.path.isfile(exe_path):
+                print("using '{}'".format(exe_path))
+                return exe_path
+
+    return None
+
+def _call_process():
+    exe = _lookup_cppcheck_exe('test-stacktrace')
+    if exe is None:
+        raise Exception('executable not found')
+    p = subprocess.Popen([exe], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    comm = p.communicate()
+    stdout = comm[0].decode(encoding='utf-8', errors='ignore').replace('\r\n', '\n')
+    stderr = comm[1].decode(encoding='utf-8', errors='ignore').replace('\r\n', '\n')
+    return p.returncode, stdout, stderr
+
+
+def test_stack():
+    exitcode, stdout, stderr = _call_process()
+    assert stderr == ''
+    lines = stdout.splitlines()
+    assert lines[0] == 'Callstack:'
+    assert lines[1].endswith('my_func_2()')
+    assert lines[2].endswith('my_func()')