[gui] Regex search starting with '(' causes jadx-gui to freeze

[MVZ1]

Issue details

Describe:
Regex search starting with '(' causes jadx-gui to freeze

How to reproduce:

1. Open jadx-gui, load any file, and navigate to the code view of a specific file.
2. Press Fn + F to open the current file's search bar, then enable regex mode.
3. Type content starting with "(" in the search box (e.g., type "(test". The interface freezes immediately and becomes unresponsive.

Below is the log:
Jadx version : 1.5.3
Java version : 24.0.2
Java VM : Oracle Corporation Java HotSpot(TM) 64-Bit Server VM
Platform : Windows 11 (10.0 amd64)
Max heap size: 11280 MB

java.lang.StackOverflowError
at java.base/java.lang.Long.toString(Unknown Source)
at java.base/java.lang.Long.toString(Unknown Source)
at java.base/java.util.Formatter$FormatSpecifier.print(Unknown Source)
at java.base/java.util.Formatter$FormatSpecifier.print(Unknown Source)
at java.base/java.util.Formatter$FormatSpecifier.printInteger(Unknown Source)
at java.base/java.util.Formatter$FormatSpecifier.print(Unknown Source)
at java.base/java.util.Formatter.format(Unknown Source)
at java.base/java.util.Formatter.format(Unknown Source)
at java.base/java.lang.String.format(Unknown Source)
at jadx.gui.utils.NLS.str(NLS.java:78)
at jadx.gui.ui.codearea.SearchBar.setResultCount(SearchBar.java:237)
at jadx.gui.ui.codearea.SearchBar.search(SearchBar.java:208)
at jadx.gui.ui.codearea.SearchBar.search(SearchBar.java:221)
at jadx.gui.ui.codearea.SearchBar.search(SearchBar.java:221)
......(many many "at jadx.gui.ui.codearea.SearchBar.search(SearchBar.java:221)")

I tested many APKs and this problem occurred in all of them. Here is one of the faulty APKs I provided.

核心破解.zip
核心破解.apk.zip

Jadx version

1.5.3

Java version

24.0.2

OS

• Windows
• Linux
• macOS

[jpstotz]

I was able to verify this problem. Thanks for reporting.

It is indeed an APK independent bug of Jadx. The main problem is that the regex search function was added later and some old code was not updated: in method jadx.gui.ui.codearea.SearchBar.search a search calls is performed without regex (without search context):

int pos = SearchEngine.getNextMatchPos(searchText, rTextArea.getText(), forward, matchCase, wholeWord);

This causes conflicting results and lead to this endless recursion.

[MVZ1]

Hoping for a better version. Thank you for your effort in explaining this. qwq