#include  
#include  
#include  
using namespace std; 
Using the namespace mysqlpp; 
Int main () 
{
The Connection conn (false); 
If (conn. Connect (" test1 ", "127.0.0.1", "root", "root")) 
{
Query Query=conn. Query (" select cust_id from customers "); 
StoreQueryResult res=query. Store (); 
For (size_t I=0; I & lt; Res. Num_rows (); I++) 
{
Cout & lt; } 
} 
The else 
{
return -1; 
} 
return 0; 
} 

With GDB to debug, step to 12: Query Query=conn. Query (" select cust_id from customers "); Times wrong

 
The Program received signal SIGSEGV, Segmentation fault. 
0 x00007ffff73c0f1f in STD: : __use_cache & lt; STD: : __numpunct_cache & lt; char> : : operator () (this=& lt; Optimized out> , __loc=... ) 
The at/usr/local/GCC - 9.3.0/build/x86_64 - PC - - the gnu/Linux libstdc++ - v3/include/bits/locale_facets. TCC: 53 
53/usr/local/GCC - 9.3.0/build/x86_64 - PC - - the gnu/Linux libstdc++ - v3/include/bits/locale_facets. TCC: don't have that file or directory. 

But the/usr/local/GCC - 9.3.0/build/x86_64 - PC - - the gnu/Linux libstdc++ - v3/include/bits/locale_facets. TCC file exists,
Who met this kind of situation? How to solve?