fixed #10760 - added file name to ValueFlow `--debug` output (#5655)

lib/token.cpp

@@ -1701,6 +1701,7 @@ void Token::printValueFlow(bool xml, std::ostream &out) const
 {
     std::string outs;
 
+    int fileIndex = -1;
     int line = 0;
     if (xml)
         outs += "  <valueflow>\n";
@@ -1718,11 +1719,20 @@ void Token::printValueFlow(bool xml, std::ostream &out) const
             outs +=  "\">";
             outs += '\n';
         }
-        else if (line != tok->linenr()) {
+        else {
+            if (fileIndex != tok->fileIndex()) {
+                outs += "File ";
+                outs += tok->mTokensFrontBack->list->getFiles()[tok->fileIndex()];
+                outs += '\n';
+                line = 0;
+            }
+            if (line != tok->linenr()) {
                 outs += "Line ";
                 outs += std::to_string(tok->linenr());
                 outs += '\n';
             }
+        }
+        fileIndex = tok->fileIndex();
         line = tok->linenr();
         if (!xml) {
             ValueFlow::Value::ValueKind valueKind = values->front().valueKind;

test/cli/test-other.py

@@ -2,6 +2,7 @@
 # python -m pytest test-other.py
 
 import os
+import sys
 import pytest
 
 from testutils import cppcheck, assert_cppcheck
@@ -724,3 +725,89 @@ def test_markup_j(tmpdir):
         'Checking {} ...'.format(test_file_3)
     ]
     assert stderr == ''
+
+
+def test_valueflow_debug(tmpdir):
+    test_file_cpp = os.path.join(tmpdir, 'test_1.cpp')
+    with open(test_file_cpp, 'wt') as f:
+        f.write("""
+#include "test.h"
+
+void f()
+{
+    int i = 0;
+}
+"""
+                )
+    test_file_h = os.path.join(tmpdir, 'test.h')
+    with open(test_file_h, 'wt') as f:
+        f.write("""
+#include "test2.h"
+inline void f1()
+{
+    int i = 0;
+}
+"""
+                )
+        pass
+    test_file_h_2 = os.path.join(tmpdir, 'test2.h')
+    with open(test_file_h_2, 'wt') as f:
+        f.write("""
+inline void f2()
+{
+    int i = 0;
+}
+"""
+                )
+
+    args = ['--debug', test_file_cpp]
+
+    exitcode, stdout, stderr = cppcheck(args)
+    assert exitcode == 0
+    if sys.platform == "win32":
+        stdout = stdout.replace('/', '\\')
+    assert stdout == '''Checking {} ...
+
+
+##file {}
+2: void f2 ( )
+3: {{
+4: int i@var1 ; i@var1 =@expr1073741828 0 ;
+5: }}
+
+##file {}
+
+1:
+2:
+3: void f1 ( )
+4: {{
+5: int i@var2 ; i@var2 =@expr1073741829 0 ;
+6: }}
+
+##file {}
+
+1:
+2:
+3:
+4: void f ( )
+5: {{
+6: int i@var3 ; i@var3 =@expr1073741830 0 ;
+7: }}
+
+
+
+##Value flow
+File {}
+Line 4
+  = always 0
+  0 always 0
+File {}
+Line 5
+  = always 0
+  0 always 0
+File {}
+Line 6
+  = always 0
+  0 always 0
+'''.format(test_file_cpp, test_file_h_2, test_file_h, test_file_cpp, test_file_h_2, test_file_h, test_file_cpp)
+    assert stderr == ''