| Title: | C++ |
| Notice: | Read 1.* and use keywords (e.g. SHOW KEY/FULL KIT_CXX_VAX_VMS) |
| Moderator: | DECCXX::AMARTIN |
| Created: | Fri Nov 06 1987 |
| Last Modified: | Thu Jun 05 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 3604 |
| Total number of notes: | 18242 |
I have a customer reporting an internal compiler error on Alpha 6.2
with CXX 5.5-017 and a %VCG-F-BUGCHECK on a VAX with OVMS 6.2 and
CXX 5.5-017. Below is the sample code and error.
Looks like a comiler bug to me. What do you think?
Regards,
Bob Knecht
Colorado Customer Support Center
Problem: CXX compiler aborts when destructor defined but not declared
Environment: CXX V5.5-017 (Alpha VMS or VAX VMS)
OpenVMS V6.2-1H3 (Alpha) or OpenVMS V6.2 (VAX)
Details:
The following example, when compiled with the $ CXX command,
aborts the compiler on both VAX and Alpha. If the commented
line (the declaration of the destructor) is un-commented, it
compiles properly.
On Alpha:
| MCCA1::ESM> cxx main_dsnbug
| Internal compiler error detected at line 3558 in file
CSRC:[FE_COMMON]CMSYMTAB.H;1.
| %SYSTEM-F-ACCVIO, access violation, reason mask=04, virtual
address=00000000, PC=001621D8, PS=0000001B
| %TRACE-F-NOMSG, Message number 0009804C
| image module routine line rel PC
abs PC
| CXX$COMPILER 0 00000000001521D8
00000000001621D8
| CXX$COMPILER 0 000000000015F408
000000000016F408
| CXX$COMPILER 0 000000000018EC44
000000000019EC44
| CXX$COMPILER 0 0000000000195050
00000000001A5050
| CXX$COMPILER 0 000000000018C8EC
000000000019C8EC
| CXX$COMPILER 0 00000000001A23D8
00000000001B23D8
| CXX$COMPILER 0 0000000000150790
0000000000160790
| CXX$COMPILER GEM_CP_VMS GEM_CP_MAIN 2509 00000000000015C4
000000000027EFE4
| 0 FFFFFFFF89D6C170
FFFFFFFF89D6C170
On VAX:
| SLC::ESM> cxx main_dsnbug
| {}
| %VCG-F-BUGCHECK, Compiler bug check during front end phase .
| Submit an SPR with a problem description.
| At line number 5 in
USER_DISK_SLC2:[ESM.SCRATCH.CXX.HW4]MAIN_DSNBUG.CXX;3.
|
| {}
| %VCG-I-NOBJECT, No object file produced.
| At line number 5 in
USER_DISK_SLC2:[ESM.SCRATCH.CXX.HW4]MAIN_DSNBUG.CXX;3.
Sample code consists is as follows:
File: main_dsnbug.cxx
//
// This crashes cxx compiler with no useful info.
// But if I remove '//?? ' from '//?? inline ~Dsnbug();' it works!
//
#include <iostream.h>
class Dsnbug
{
public:
inline Dsnbug(const char* = "");
//?? inline ~Dsnbug();
private:
char* ptr;
};
inline Dsnbug::Dsnbug (const char* p) : ptr(0)
{
p = p ? p : "";
ptr = new char[strlen(p) + 1];
strcpy(ptr, p);
}
inline Dsnbug::~Dsnbug()
{
delete [] ptr;
}
int main ()
{}
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 3528.1 | Fixed in V5.6; try changing program | DECCXX::MITCHELL | Mon Apr 07 1997 23:54 | 11 | |
The under-development V6.0 compiler diagnoses the following error:
cxx: Error: test.cxx, line 24: class "Dsnbug" has no member "~Dsnbug"
inline Dsnbug::~Dsnbug()
-------------------^
Correcting the error should cure the compiler crash. Granted, a
compiler crash isn't such a great way to diagnose an error.
This problem has also been fixed in V5.6.
| |||||
| 3528.2 | Fixed in 5.6, thanks! | CSC32::B_KNECHT | Wed Apr 09 1997 18:50 | 5 | |
Thanks for the update. I'll let the customer know it is fixed in the
next release.
Bob K.
| |||||