skylot
[java-input] Negative register number
Issue details
When i decompile the aar file, Jadx compliant the next information。
/* JADX ERROR: JadxRuntimeException in pass: CheckCode
jadx.core.utils.exceptions.JadxRuntimeException: Incorrect negative register number in instruction: 0x0047: RETURN (r-1 I:iv)
at jadx.core.dex.visitors.CheckCode.checkInstructions(CheckCode.java:76)
at jadx.core.dex.visitors.CheckCode.visit(CheckCode.java:33)
*/
Relevant log output or stacktrace
jadx.core.utils.exceptions.JadxRuntimeException: Incorrect negative register number in instruction: 0x0420: SWITCH (r-1 I:??)
case 3: goto 0x00c4
case 56: goto 0x0371
default: goto 0x00c4
at jadx.core.dex.visitors.CheckCode.checkInstructions(CheckCode.java:76)
at jadx.core.dex.visitors.CheckCode.visit(CheckCode.java:33)
at jadx.core.dex.visitors.DepthTraversal.visit(DepthTraversal.java:25)
at jadx.core.dex.visitors.DepthTraversal.lambda$visit$1(DepthTraversal.java:13)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at jadx.core.dex.visitors.DepthTraversal.visit(DepthTraversal.java:13)
at jadx.core.ProcessClass.process(ProcessClass.java:74)
at jadx.core.ProcessClass.generateCode(ProcessClass.java:117)
at jadx.core.dex.nodes.ClassNode.generateClassCode(ClassNode.java:403)
at jadx.core.dex.nodes.ClassNode.decompile(ClassNode.java:391)
at jadx.core.dex.nodes.ClassNode.decompile(ClassNode.java:311)
at jadx.gui.treemodel.JClass.lambda$getLoadTask$0(JClass.java:86)
at jadx.core.utils.tasks.TaskExecutor.wrapTask(TaskExecutor.java:168)
at jadx.core.utils.tasks.TaskExecutor.runStages(TaskExecutor.java:143)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:842)
WARN : Code restructure failed: missing block: B:20:?, code lost:
Provide sample and class/method full name
public static synchronized defpackage.iv a(android.content.Context r5) {
/*
goto L3d
L5:
r0 = r5
if (r0 != 0) goto Le
goto L13
Le:
goto L15
L13:
r0 = 0
return r0
L15:
iv r0 = defpackage.iv.j
if (r0 != 0) goto L20
goto L25
L20:
goto L35
L25:
iv r0 = new iv
r1 = r0
r2 = r5
r1.<init>(r2)
defpackage.iv.j = r0
goto L35
L35:
iv r0 = defpackage.iv.j
goto L77
L3d:
r0 = 2
r1 = 2
int r0 = r0 % r1
goto L48
L46:
return r-1
L48:
int r0 = defpackage.iv.t
r1 = 97
int r0 = r0 + r1
r1 = r0
r2 = 128(0x80, float:1.794E-43)
int r1 = r1 % r2
defpackage.iv.w = r1
r1 = 2
int r0 = r0 % r1
if (r0 != 0) goto L60
goto Ldf
L60:
goto Ld8
L65:
throw r0
L66:
r0 = r5
r1 = 0
int r1 = r1.length // Catch: java.lang.Throwable -> L65
if (r0 != 0) goto L72
goto Lb6
L72:
goto Lb0
L77:
int r1 = defpackage.iv.w // Catch: java.lang.Throwable -> L65
r2 = 85
int r1 = r1 + r2
r2 = r1
r3 = 128(0x80, float:1.794E-43)
int r2 = r2 % r3
defpackage.iv.t = r2
r2 = 2
int r1 = r1 % r2
if (r1 == 0) goto L8f
goto L94
L8f:
goto L46
L94:
goto L46
L99:
switch(r0) {
case 0: goto L15;
case 1: goto L13;
default: goto L15;
}
Lb0:
r0 = 0
goto L99
Lb6:
r0 = 1
goto L99
Lbc:
switch(r0) {
case 36: goto L66;
case 57: goto L5;
default: goto L5;
}
Ld8:
r0 = 57
goto Lbc
Ldf:
r0 = 36
goto Lbc
*/
throw new UnsupportedOperationException("Method not decompiled: defpackage.iv.a(android.content.Context):iv");
}
Jadx version
1.5.2
@Mister-leo please share a sample aar, jar or class file. Without a sample I will not be able to reproduce and fix this issue.
Also as a workaround you can try switching to dx/d8 conversion with Preferences -> Decompile -> Use dx/d8 to convert java bytecode or --use-dx in jadx-cli.
@Mister-leo please share a sample aar, jar or class file. Without a sample I will not be able to reproduce and fix this issue.
Also as a workaround you can try switching to dx/d8 conversion with
Preferences -> Decompile -> Use dx/d8 to convert java bytecodeor--use-dxin jadx-cli.
gh.class.zip This is the sample class