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This is a compliant code solution. If it is necessary to modify the value of the string returned by the function getenv(), then the programmer should make a local copy of that string value, and then modify the local copy of that string.
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const char *env;
char *copy_of_env;
if ((env = getenv("TEST_ENV")) != NULL) {
copy_of_env = malloc(strlen(env) + 1);
if (copy_of_env != NULL) {
strcpy(copy_of_env, env);
}
else {
/* Error handling */
}
copy_of_env[0] = 'a';
}
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