in src/c/perf-map-agent.c [56:69]
void class_name_from_sig(char *dest, size_t dest_size, const char *sig) {
if (clean_class_names && sig[0] == 'L') {
const char *src = sig + 1;
int i;
for(i = 0; i < (dest_size - 1) && src[i]; i++) {
char c = src[i];
if (c == '/') c = '.';
if (c == ';') c = 0;
dest[i] = c;
}
dest[i] = 0;
} else
strncpy(dest, sig, dest_size);
}