早上好,是否可以使用 gcc 3.3 版修复与 int * cast 相关的 Sun Solaris OS 5.8 分段错误?gdb 变量值如下所示。cOrderedList 类成员变量如下所示。uname -a 和 gcc -v outputa 如下所示。
此代码在 Windows Visual Studio C++ 9.0 上运行良好。谢谢。
[新 LWP 1] 程序收到信号 SIGSEGV,分段错误。 cOrderedList::LoadDatabaseRecords (cSQLite*, char const*) 中的 0xff064b04 ( 这=0x68f10,数据库_=0xa4ba8, Command_=0xffbed468 "选择 * FROM LeftPattern") 在../Source/cOrderedList.cpp:272 272 *((int*) (Records+RecordCount*RecordSize+FieldOffsets[i]))=Database_->ColumnInt(i); (gdb) 打印我 3 美元 = 3 (gdb) 打印记录 $4 = 0xa0800 "" (gdb) 打印记录计数 $5 = 0 (gdb) 打印 RecordSize 6 美元 = 50 (gdb) 打印 FieldOffsets[i] 7 美元 = 46
class cOrderedList {
private:
enum eFieldTypes {
Character,
Integer
};
bool CopyConstructed;
int RecordCount;
int FieldCount;
int RecordSize;
char *Records;
int *FieldSizes,*FieldOffsets;
eFieldTypes *FieldTypes;
char *CurrentPos;
$ unname -a SunOS 5.8 Generic_108528-22 sun4u sparc SUNW,Sun-Fire-V210 $ gcc -v 从 /usr/local/lib/gcc-lib/sparc-sun-solaris2.8/3.3/specs 读取规范 配置:../configure --disable-nls --with-as=/usr/ccs/bin/as --with-ld= /usr/ccs/bin/ld 线程模型:posix
bool cOrderedList::LoadDatabaseRecords(cSQLite *Database_,const char *Command_) {
int retVal;
char str[4096];
RetrySQL:
RecordCount=0;
Database_->Prepare(Command_);
while ((retVal=Database_->Step())!=SQLITE_DONE) {
switch (retVal) {
case SQLITE_ROW:
for (int i=0;i<FieldCount;i++) {
if (FieldTypes[i]==Integer) {
*((int*) (Records+RecordCount*RecordSize+FieldOffsets[i]))=Database_->ColumnInt(i);
} else {
Database_->ColumnText(i,str);
LTrim(str);
RTrim(str);
#if defined(_DEBUG)
if ((int) strlen(str)>=FieldSizes[i])
printf("Field not large enough: %s\n",Command_);
#endif
strncpy(Records+RecordCount*RecordSize+FieldOffsets[i],str,FieldSizes[i]);
Records[RecordCount*RecordSize+FieldOffsets[i]+FieldSizes[i]-1]='\x0';
}
}
RecordCount++;
break;
case SQLITE_BUSY:
continue;
case SQLITE_MISUSE:
goto RetrySQL;
default:
break;
}
}
return true;
}