Fix(#3239) NPE, for RegexFilter creator.

jaykataria1111 · jaykataria1111 · commit 75a5b046f659 · 2024-12-02T18:20:14.000-08:00
diff --git a/log4j-core/src/main/java/org/apache/logging/log4j/core/filter/RegexFilter.java b/log4j-core/src/main/java/org/apache/logging/log4j/core/filter/RegexFilter.java
@@ -148,7 +148,8 @@ public static RegexFilter createFilter(
             LOGGER.error("A regular expression must be provided for RegexFilter");
             return null;
         }
-        return new RegexFilter(useRawMsg, Pattern.compile(regex, toPatternFlags(patternFlags)), match, mismatch);
+        return new RegexFilter(
+                useRawMsg != null && useRawMsg, Pattern.compile(regex, toPatternFlags(patternFlags)), match, mismatch);
     }
 
     private static int toPatternFlags(final String[] patternFlags)

Original file line number	Diff line number	Diff line change
`@@ -148,7 +148,8 @@ public static RegexFilter createFilter(`
`148`	`148`	`LOGGER.error("A regular expression must be provided for RegexFilter");`
`149`	`149`	`return null;`
`150`	`150`	`}`
`151`		`- return new RegexFilter(useRawMsg, Pattern.compile(regex, toPatternFlags(patternFlags)), match, mismatch);`
	`151`	`+ return new RegexFilter(`
	`152`	`+ useRawMsg != null && useRawMsg, Pattern.compile(regex, toPatternFlags(patternFlags)), match, mismatch);`
`152`	`153`	`}`
`153`	`154`
`154`	`155`	`private static int toPatternFlags(final String[] patternFlags)`