CODEWITHSUNDEEP
c++stringfreestdstring
SSC
SSC

Reputation: 1331

Can I free the memory of the char* string when I assign it to std::string?

Can I free the memory of the char* pointed string after I have convert it to a std::string? For example:

char* c_string;
c_string = strdup("This is a test");
std::string cpp_string;
cpp_string(c_string);
free(c_string); /* can I call free here? */

Upvotes: 9

Views: 2102

Answers (2)

Jonathon Reinhart
Jonathon Reinhart

Reputation: 137398

Yes. The std::string constructor makes a copy of the string passed to it.

See constructor #4 on this page.

string (const char* s);    // from c-string

from c-string

Copies the null-terminated character sequence (C-string) pointed by s.

Upvotes: 5

icktoofay
icktoofay

Reputation: 129001

Yes. std::string copies the underlying C string.

Source: Table 67 of §21.4.2 of C++11 draft N3376.

Upvotes: 13

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