Fix #12181 (Suppressions: allow that id with * is added) (#5681)

Author: danmar

lib/suppressions.cpp

@@ -58,9 +58,10 @@ static bool isAcceptedErrorIdChar(char c)
     case '_':
     case '-':
     case '.':
+    case '*':
         return true;
     default:
-        return std::isalnum(c);
+        return c > 0 && std::isalnum(c);
     }
 }
 
@@ -255,14 +256,12 @@ std::string Suppressions::addSuppression(Suppressions::Suppression suppression)
     if (suppression.errorId.empty() && suppression.hash == 0)
         return "Failed to add suppression. No id.";
 
-    if (suppression.errorId != "*") {
-        for (std::string::size_type pos = 0; pos < suppression.errorId.length(); ++pos) {
-            if (suppression.errorId[pos] < 0 || !isAcceptedErrorIdChar(suppression.errorId[pos])) {
-                return "Failed to add suppression. Invalid id \"" + suppression.errorId + "\"";
-            }
-            if (pos == 0 && std::isdigit(suppression.errorId[pos])) {
-                return "Failed to add suppression. Invalid id \"" + suppression.errorId + "\"";
-            }
+    for (std::string::size_type pos = 0; pos < suppression.errorId.length(); ++pos) {
+        if (!isAcceptedErrorIdChar(suppression.errorId[pos])) {
+            return "Failed to add suppression. Invalid id \"" + suppression.errorId + "\"";
+        }
+        if (pos == 0 && std::isdigit(suppression.errorId[pos])) {
+            return "Failed to add suppression. Invalid id \"" + suppression.errorId + "\"";
         }
     }
 

man/manual.md

@@ -451,10 +451,10 @@ The format for an error suppression is one of:
     [error id]:[filename2]
     [error id]
 
-The `error id` is the id that you want to suppress. The easiest way to get it is to use the --template=gcc command line flag. The id is shown in brackets.
+The `error id` is the id that you want to suppress. The id of a warning is shown in brackets in the normal cppcheck text output. The suppression `error id` may contain \* to match any sequence of tokens.
 
-The filename may include the wildcard characters \* or ?, which matches any sequence of characters or any single character respectively. 
-It is recommended to use "/" as path separator on all operating systems. The filename must match the filename in the reported warning exactly. 
+The filename may include the wildcard characters \* or ?, which matches any sequence of characters or any single character respectively.
+It is recommended to use forward-slash `/` as path separator on all operating systems. The filename must match the filename in the reported warning exactly.
 For instance, if the warning contains a relative path, then the suppression must match that relative path.
 
 ## Command line suppression

test/testsuppressions.cpp

@@ -51,6 +51,7 @@ class TestSuppressions : public TestFixture {
         TEST_CASE(suppressionsDosFormat);     // Ticket #1836
         TEST_CASE(suppressionsFileNameWithColon);    // Ticket #1919 - filename includes colon
         TEST_CASE(suppressionsGlob);
+        TEST_CASE(suppressionsGlobId);
         TEST_CASE(suppressionsFileNameWithExtraPath);
         TEST_CASE(suppressionsSettings);
         TEST_CASE(suppressionsSettingsThreads);
@@ -171,6 +172,14 @@ class TestSuppressions : public TestFixture {
         }
     }
 
+    void suppressionsGlobId() const {
+        Suppressions suppressions;
+        std::istringstream s("a*\n");
+        ASSERT_EQUALS("", suppressions.parseFile(s));
+        ASSERT_EQUALS(true, suppressions.isSuppressed(errorMessage("abc", "xyz.cpp", 1)));
+        ASSERT_EQUALS(false, suppressions.isSuppressed(errorMessage("def", "xyz.cpp", 1)));
+    }
+
     void suppressionsFileNameWithExtraPath() const {
         // Ticket #2797
         Suppressions suppressions;