Bug 84668 – ObjcClass::methodsNamed() can leak if buffer is dynamically allocated

• Component: JavaScriptCore
• Status: RESOLVED FIXED

[Benjamin Poulain]

From ObjcClass::methodsNamed():

    char fixedSizeBuffer[1024];
    char* buffer = fixedSizeBuffer;
    CString jsName = identifier.ascii();
    if (!convertJSMethodNameToObjc(jsName.data(), buffer, sizeof(fixedSizeBuffer))) {
        int length = jsName.length() + 1;
        buffer = new char[length];
        if (!buffer || !convertJSMethodNameToObjc(jsName.data(), buffer, length))
            return methodList;
    }

    RetainPtr<CFStringRef> methodName(AdoptCF, CFStringCreateWithCString(NULL, buffer, kCFStringEncodingASCII));
    Method* method = (Method*)CFDictionaryGetValue(_methods.get(), methodName.get());
    if (method) {
        methodList.append(method);
        return methodList;
    }

If the second convertJSMethodNameToObjc() return false, or if the the dictionary match the method name, buffer is never released.

[Benjamin Poulain]

Created attachment 139054 [details]
Patch

[Benjamin Poulain]

Comment on attachment 139054 [details]
Patch

Clearing flags on attachment: 139054

Committed r115358: <http://trac.webkit.org/changeset/115358>

[Benjamin Poulain]

All reviewed patches have been landed.  Closing bug.

[Darin Adler]

Moving all JavaScriptGlue bugs to JavaScriptCore. The JavaScriptGlue framework itself is long gone. And most of the more recent bugs put in this component were put there by people who thought this was for some other aspect of “JavaScript glue” and have nothing to do with the actual original reason for the existence of this component, which was an OS-X-only framework named JavaScriptGlue.