[ABANDONED] J-Scope crashes with multiple C++ factory methods

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  • [ABANDONED] J-Scope crashes with multiple C++ factory methods

    We have encountered a crash scenario with J-Scope V7.92f (version 7.70e is the last one that does not crash) during parsing of an ELF-file that contains a C++ class with more than one factory method (using arm-none-eabi-g++-12)

    Example code to reproduce:

    C Source Code: main.cpp

    1. #define MAKE_ME_FAIL
    3. class MyClass
    4. {
    5. public:
    6. MyClass() = default;
    8. MyClass(int i) : rawVal(i){};
    10. static MyClass Method(int i)
    11. {
    12. return MyClass(i);
    13. };
    14. #ifdef MAKE_ME_FAIL
    15. static MyClass AnotherMethod(int i)
    16. {
    17. return MyClass(i);
    18. };
    19. #endif
    20. int rawVal;
    21. };
    23. MyClass fixp;
    25. int main(void){
    26. return 0;
    27. }
    Display All

    Trying to load with MAKE_ME_FAIL defined will make max out the CPU usage of J-Scope, until it finally crashes. The screen freezes with this window:




    When only using one factory method (MAKE_ME_FAIL is false), the program does not crash, but there are already hints why it goes wrong: there seems to be a recursion when parsing the symbols:



    Please provide a fix so our teams can continue using this useful tool with our c++-codebase.

    You can use arm-none-eabi-g++ -gdwarf-4 -T linker.ld main.cpp -o main.elf to reproduce, with this minimum linker file:

    Source Code

    1. MEMORY
    2. {
    3. FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 64K
    4. RAM (rw) : ORIGIN = 0x20000000, LENGTH = 20K
    5. }
    7. ENTRY(main)
    9. SECTIONS
    10. {
    11. .text : {
    12. KEEP(*(.vector_table))
    13. *(.text)
    14. *(.text*)
    15. __data_source = .;
    16. . = ALIGN(4);
    17. } > FLASH
    19. .data : {
    20. __data_start = .;
    21. *(.data)
    22. . = ALIGN(4);
    23. __data_size = SIZEOF(.data);
    24. } > RAM AT> FLASH
    26. .bss : {
    27. __bss_start = .;
    28. *(.bss)
    29. *(.bss*)
    30. . = ALIGN(4);
    31. __bss_size = SIZEOF(.bss);
    32. } > RAM
    34. .stack (NOLOAD) : {
    35. . = . + 0x400; /* Stack size */
    36. __stack = .;
    37. } > RAM
    38. }
    Display All

    The post was edited 1 time, last by SirCrus ().

  • Hello,

    thanks for the report. Could you provide the .ELF file for reproduction purposes?

    Best regards,
    Matthias Konegen
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