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Prevent crash when calling insertInstruction() on empty MethodBody

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If an AVM2Code object is empty, and we attempt to insert an instruction, the method will execute code.get(-1) and throw an exception. This commit handles the situation.
This commit is contained in:
MultiplyByZer0
2017-03-11 21:58:27 -05:00
parent 3e99d19a1d
commit 2c85203985
1 changed files with 3 additions and 1 deletions
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libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/AVM2Code.java
+3 -1
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@@ -2371,7 +2371,9 @@ public class AVM2Code implements Cloneable {
pos = code.size();
}
final int byteCount = instruction.getBytesLength();
if (pos == code.size()) {
if (code.size() == 0) {
instruction.setAddress(0);
} else if (pos == code.size()) {
instruction.setAddress(code.get(pos - 1).getAddress() + code.get(pos - 1).getBytesLength());
} else {
instruction.setAddress(code.get(pos).getAddress());