[clang-tidy] False negative performance-inefficient-string-concatenation in do-while loop #186362
Description
#include <string>
void f(std::string& s) {
int i = 0;
do {
s = s + "def"; // false negative
} while (i < 10);
}
void g(std::string& s) {
int i = 0;
while (i < 10) {
s = s + "def"; // warning
}
}<source>:12:9: warning: string concatenation results in allocation of unnecessary temporary strings; consider using 'operator+=' or 'string::append()' instead [performance-inefficient-string-concatenation]
12 | s = s + "def";
| ^
1 warning generated.