nit: Make the CTU test have a valid finding with defualt configuration

.github/workflows/test.yml

@@ -82,9 +82,12 @@ jobs:
       - uses: actions/checkout@v2
       - run: test/fix_compile_json_paths.sh
       - uses: ./
+        id: codechecker
         with:
           logfile: 'test/ctu/compile_commands.json'
           ctu: true
+      - name: "Reject test if previous step did not produce CTU finding"
+        run: cat ${{ steps.codechecker.outputs.result-log }} | grep "Dereference of null pointer"
 
   fail-on-error:
     name: "Parse: Fail the build on error"

README.md

@@ -146,9 +146,10 @@ runs:
 
 The action exposes the following outputs which may be used in a workflow's steps succeeding the analysis.
 
-| Variable          | Value                                     | Description                                                                   |
-|-------------------|-------------------------------------------|-------------------------------------------------------------------------------|
-| `analyze-output`  | Auto-generated, or `analyze-output` input | The directory where the **raw** analysis output files are available.          |
-| `logfile`         | Auto-generated, or `logfile` input        | The JSON Compilation Database of the analysis that was executed.              |
-| `result-html-dir` | Auto-generated.                           | The directory where the **user-friendly HTML** bug reports were generated to. |
-| `warnings`        | `true` or `false`                         | Whether the static analysers reported any findings.                           |
+| Variable          | Value                                     | Description                                                                       |
+|-------------------|-------------------------------------------|-----------------------------------------------------------------------------------|
+| `analyze-output`  | Auto-generated, or `analyze-output` input | The directory where the **raw** analysis output files are available.              |
+| `logfile`         | Auto-generated, or `logfile` input        | The JSON Compilation Database of the analysis that was executed.                  |
+| `result-html-dir` | Auto-generated.                           | The directory where the **user-friendly HTML** bug reports were generated to.     |
+| `result-log`      | Auto-generated.                           | `CodeChecker parse`'s output log file which contains the findings dumped into it. |
+| `warnings`        | `true` or `false`                         | Whether the static analysers reported any findings.                               |

action.yml

@@ -56,6 +56,9 @@ outputs:
   warnings:
     description: 'Whether the static analyser(s) reported any findings.'
     value: ${{ steps.parse.outputs.HAS_FINDINGS }}
+  result-log:
+    description: 'The file where the output of CodeChecker parse is written to verbatim.'
+    value: ${{ steps.parse.outputs.OUTPUT_LOG }}
   result-html-dir:
     description: 'The output directory where the user-friendly HTML reports were stored to.'
     value: ${{ steps.parse.outputs.HTML_DIR }}

src/execute-analysis.sh

@@ -19,9 +19,8 @@ if [[ ! -z "$IN_CONFIGFILE" ]]; then
   echo "Using configuration file \"$IN_CONFIGFILE\"!"
 fi
 
-CTU_FLAG=$([[ "$IN_CTU" == "true" ]] && echo "--ctu --ctu-ast-mode load-from-pch" || echo "")
 if [[ "$IN_CTU" == "true" ]]; then
-  CTU_FLAG="--ctu --ctu-ast-mode load-from-pch"
+  CTU_FLAGS="--ctu --ctu-ast-mode load-from-pch"
   echo "::notice title=Cross Translation Unit analyis::CTU has been enabled, the analysis might take a long time!"
 fi
 

src/parse-results.sh

@@ -15,9 +15,10 @@ OUTPUT_DIR="$IN_OUTPUT_DIR"
 if [[ -z "$OUTPUT_DIR" ]]; then
   OUTPUT_DIR=~/"$ACTION_NAME"_Results-HTML
 fi
-
 mkdir -pv "$(dirname $"OUTPUT_DIR")"
 
+OUTPUT_LOG="$(dirname "$IN_OUTPUT_DIR")"/"$(basename "$IN_OUTPUT_DIR")_Parse.log"
+
 if [[ ! -z "$IN_CONFIGFILE" ]]; then
   CONFIG_FLAG_1="--config"
   CONFIG_FLAG_2=$IN_CONFIGFILE
@@ -34,8 +35,11 @@ echo "::set-output name=HTML_DIR::$OUTPUT_DIR"
 
 "$CODECHECKER_PATH"/CodeChecker parse \
   "$RAW_RESULT_DIR" \
-  --trim-path-prefix "$PROJECT_PATH"
+  --trim-path-prefix "$PROJECT_PATH" \
+  > "$OUTPUT_LOG"
 EXIT_CODE=$?
+echo "::set-output name=OUTPUT_LOG::$OUTPUT_LOG"
+
 
 if [[ "$EXIT_CODE" == "2" ]]; then
   echo "::set-output name=HAS_FINDINGS::true"

test/ctu/lib.cpp

@@ -1,3 +1,4 @@
-int zero() {
-    return 0;
+int broken(int* iptr) {
+    *iptr = 42;
+    return *iptr;
 }

test/ctu/main.cpp

@@ -1,5 +1,6 @@
-int zero();
+int broken(int* iptr);
 
 int main(int argc, char** argv) {
-    return argc / zero();
+    int* ptr = nullptr;
+    return broken(ptr);
 }