Invalid stack depth change.

[rugyi]

The stack change value is invalid on either MFC80U.DLL, or demangled functions, where the function returns a class/struct (not pointer, or reference of a class).

To reproduce the issue, just create a new project, import the attached exe, and decompile.

Three of MFC80U.DLL calls (CString::Left, CString::Right, CString::Mid) changes the stack by -8 on return, but according to the decompiler it changes only -4 (as can seen on the screenshot). Tried to change the value by hand, but the sw did not allow me to change it to -8, set it to 8 instead.
Most likely it is beacuse the return value is a class, and the compiler passes the returning class pointer as an additional parameter, and ghidra forgets about it.

• OS: [Win 11]
• Java Version: [JDK 23.0.1 (64 bit)]
• Ghidra Version: [11.2.1]
• Ghidra Origin: [official GitHub distro]

ghidra_bug.zip