diff --git a/lib/pathmatch.cpp b/lib/pathmatch.cpp
index caf121608ed..37c9c8e7f81 100644
--- a/lib/pathmatch.cpp
+++ b/lib/pathmatch.cpp
@@ -45,6 +45,11 @@ bool PathMatch::match(const std::string &path) const
     std::string findpath = Path::fromNativeSeparators(path);
     if (!mCaseSensitive)
         strTolower(findpath);
+    std::string finddir;
+    if (!endsWith(findpath,'/'))
+        finddir = removeFilename(findpath);
+    else
+        finddir = findpath;
 
     const bool is_absolute = Path::isAbsolute(path);
 
@@ -54,19 +59,16 @@ bool PathMatch::match(const std::string &path) const
 
         // Filtering directory name
         if (endsWith(pathToMatch,'/')) {
-            if (!endsWith(findpath,'/'))
-                findpath = removeFilename(findpath);
-
-            if (pathToMatch.length() > findpath.length())
+            if (pathToMatch.length() > finddir.length())
                 continue;
             // Match relative paths starting with mask
             // -isrc matches src/foo.cpp
-            if (findpath.compare(0, pathToMatch.size(), pathToMatch) == 0)
+            if (finddir.compare(0, pathToMatch.size(), pathToMatch) == 0)
                 return true;
             // Match only full directory name in middle or end of the path
             // -isrc matches myproject/src/ but does not match
             // myproject/srcfiles/ or myproject/mysrc/
-            if (findpath.find("/" + pathToMatch) != std::string::npos)
+            if (finddir.find("/" + pathToMatch) != std::string::npos)
                 return true;
         }
         // Filtering filename
diff --git a/test/cli/other_test.py b/test/cli/other_test.py
index 655e45de28b..a76fd5e0b4f 100644
--- a/test/cli/other_test.py
+++ b/test/cli/other_test.py
@@ -2784,4 +2784,30 @@ def test_addon_suppr_cli_file_line(tmp_path):
 
 def test_addon_suppr_cli_absfile_line(tmp_path):
     test_file = tmp_path / 'test.c'
-    __test_addon_suppr(tmp_path, ['--suppress=misra-c2012-2.3:{}:3'.format(test_file)])
\ No newline at end of file
+    __test_addon_suppr(tmp_path, ['--suppress=misra-c2012-2.3:{}:3'.format(test_file)])
+
+
+def test_file_ignore_2(tmp_path):  # #13570
+    tests_path = tmp_path / 'tests'
+    os.mkdir(tests_path)
+
+    lib_path = tmp_path / 'lib'
+    os.mkdir(lib_path)
+
+    test_file_1 = lib_path / 'test_1.c'
+    with open(test_file_1, 'wt'):
+        pass
+
+    args = [
+        '-itests',
+        '-itest_1.c',
+        '.'
+    ]
+
+    exitcode, stdout, stderr = cppcheck(args, cwd=tmp_path)
+    assert exitcode == 1, stdout
+    assert stdout.splitlines() == [
+        'cppcheck: error: could not find or open any of the paths given.',
+        'cppcheck: Maybe all paths were ignored?'
+    ]
+    assert stderr.splitlines() == []
\ No newline at end of file
diff --git a/test/testpathmatch.cpp b/test/testpathmatch.cpp
index 25cfbe5595b..8786e1b795f 100644
--- a/test/testpathmatch.cpp
+++ b/test/testpathmatch.cpp
@@ -52,6 +52,7 @@ class TestPathMatch : public TestFixture {
         TEST_CASE(onemasklongerpath1);
         TEST_CASE(onemasklongerpath2);
         TEST_CASE(onemasklongerpath3);
+        TEST_CASE(onemaskcwd);
         TEST_CASE(twomasklongerpath1);
         TEST_CASE(twomasklongerpath2);
         TEST_CASE(twomasklongerpath3);
@@ -60,10 +61,12 @@ class TestPathMatch : public TestFixture {
         TEST_CASE(filemaskdifferentcase);
         TEST_CASE(filemask2);
         TEST_CASE(filemask3);
+        TEST_CASE(filemaskcwd);
         TEST_CASE(filemaskpath1);
         TEST_CASE(filemaskpath2);
         TEST_CASE(filemaskpath3);
         TEST_CASE(filemaskpath4);
+        TEST_CASE(mixedallmatch);
     }
 
     // Test empty PathMatch
@@ -146,6 +149,10 @@ class TestPathMatch : public TestFixture {
         ASSERT(srcMatcher.match("project/src/module/"));
     }
 
+    void onemaskcwd() const {
+        ASSERT(!srcMatcher.match("./src"));
+    }
+
     void twomasklongerpath1() const {
         std::vector<std::string> masks = { "src/", "module/" };
         PathMatch match(std::move(masks));
@@ -189,6 +196,10 @@ class TestPathMatch : public TestFixture {
         ASSERT(fooCppMatcher.match("src/foo.cpp"));
     }
 
+    void filemaskcwd() const {
+        ASSERT(fooCppMatcher.match("./lib/foo.cpp"));
+    }
+
     // Test PathMatch containing "src/foo.cpp"
     void filemaskpath1() const {
         ASSERT(srcFooCppMatcher.match("src/foo.cpp"));
@@ -205,6 +216,14 @@ class TestPathMatch : public TestFixture {
     void filemaskpath4() const {
         ASSERT(!srcFooCppMatcher.match("bar/foo.cpp"));
     }
+
+    void mixedallmatch() const { // #13570
+        // when trying to match a directory against a directory entry it erroneously modified a local variable also used for file matching
+        std::vector<std::string> masks = { "tests/", "file.c" };
+        PathMatch match(std::move(masks));
+        ASSERT(match.match("tests/"));
+        ASSERT(match.match("lib/file.c"));
+    }
 };
 
 REGISTER_TEST(TestPathMatch)