[#EXT_EP-8712] Unimplemented core issue 1769: Catching a thrown derived class by reference to base clas

[EXT_EP-8712] Unimplemented core issue 1769: Catching a thrown derived class by reference to base clas Created: 06/Dec/17 Updated: 28/Jun/22
Status:	New
Project:	Embedded Software & Tools
Component/s:	None
Affects Version/s:	None
Fix Version/s:	None

Type:

Bug

Priority:

Medium

Reporter:

TI User

Assignee:

TI User

Resolution:

Unresolved

Votes:

Remaining Estimate:

Not Specified

Time Spent:

Not Specified

Original Estimate:

Not Specified

Product:

Code Generation Tools

Internal ID:

CODEGEN-4072

Found In Release:

ARM_18.1.0.LTS
MSP430_18.1.0.LTS
C2000_22.6.0.LTS
MSP430_20.2.0.LTS
ARM_18.12.0.LTS
MSP430_21.6.0.LTS
C2000_21.6.0.LTS
MSP430_18.12.0.LTS
ARM_20.2.0.LTS

Release Notes:

Core 1769, involving a resolution which states that derived classes can be thrown and caught by catch clauses denoting an unambiguous base, has not been implemented.

#include <assert.h>

struct BaseClass {
    int i;
    BaseClass() : i(0) { }
    BaseClass(int ii) : i(ii) { }
    BaseClass(const BaseClass& r) : i(r.i) { }
};

class DerivedClass : BaseClass {
    int ib;
  public:
    DerivedClass(const DerivedClass& r) : BaseClass(r.ib), ib(r.ib) { }
    DerivedClass(const BaseClass&) : BaseClass(999), ib(999) { }
    DerivedClass(int ii);
};

DerivedClass thrown_base (1);
DerivedClass::DerivedClass(int ii) : BaseClass(ii), ib(ii) { }

int main() {
    try {
        throw thrown_base;
        return 999;
    }
    catch(const BaseClass &k) { }
    catch(...) { assert(false); } // Assertion fails at runtime due to core issue 1769
    return 0;
}

Description

Unimplemented core issue 1769: Catching a thrown derived class by reference to base clas

Generated at Wed Apr 02 03:38:32 CDT 2025 using Jira 9.12.17#9120017-sha1:aba4002bcd633f188b6a4bb5dd8a0e1f20b79ee4.

[EXT_EP-8712] Unimplemented core issue 1769: Catching a thrown derived class by reference to base clas Created: 06/Dec/17 Updated: 28/Jun/22