std::string s("foo");
sprintf(buf,"%s",s);
Why at least under MSVC 2010 this line of code doesn’t bug in DEBUG, but bug in RELEASE ?
std::string s(foo); sprintf(buf,%s,s); Why at least under MSVC 2010 this line of code doesn’t
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std::string s("foo");
sprintf(buf,"%s",s);
Why at least under MSVC 2010 this line of code doesn’t bug in DEBUG, but bug in RELEASE ?
The
%sformat specifier expects a NULL terminatedchar*. You are passing in astd::stringinstance. If it works in DEBUG, that’s just pure luck.You should use:
This will extract a
char*and ensure that the buffer is NULL terminated.It is possible that in the runtime library
std::stringhas different implementations for DEBUG and RELEASE. Try compiling using both settings, but adding debug symbols to the RELEASE build and then step through the code. Look at the memory location wheresis stored. Is there any difference?