为什么我的strcmp失败了？

Question

I am working on an application, where if this certain error message is given, it is ignored:

[Oracle][ODBC][Ora]ORA-24338: statement handle not executed

My code for comparison is the following:

char Sqlstate[10];
long NativeErrorPtr;
char MessageText[1024];
long BufferLength=1024;
long TextLengthPtr;

SQLGetDiagRec(SQL_HANDLE_STMT,sqlc.g_hstmt,1,(SQLCHAR *) Sqlstate,(SQLINTEGER *) &NativeErrorPtr, 
(SQLCHAR *) MessageText,(SQLSMALLINT) BufferLength,(SQLSMALLINT *) &TextLengthPtr);

success=false;          
char* msg = MessageText;
char* oracleMsg = "[Oracle][ODBC][Ora]ORA-24338: statement handle not executed";

int i = strcmp(msg, oracleMsg);

I am getting i ==1 . When I hover over both msg and oracleMsg they look exactly the same. Here is the copied text from each variable.

oracleMsg 0x00c1cd88 "[Oracle][ODBC][Ora]ORA-24338: statement handle not executed" char *

msg 0x0132d0a4 "[Oracle][ODBC][Ora]ORA-24338: statement handle not executed" char *

Answer 1

My problem must have been that it is not NULL-terminated. I followed ibre5041's advice and used if((strncmp(msg, oracleMsg, 55))== 0) . This only compares the first 55 characters, which avoids the non NULL-terminated issue.