/* PR rtl-optimization/21330 */

extern void abort(void);
extern int strcmp(const char *, const char *);

int
    __attribute__((noinline))
    bar(const char **x) {
    return *(*x)++;
}

int
    __attribute__((noinline))
    baz(int c) {
    return c != '@';
}

void
    __attribute__((noinline))
    foo(const char **w, char *x, _Bool y, _Bool z) {
    char c = bar(w);
    int i = 0;

    while (1) {
        x[i++] = c;
        c = bar(w);
        if (y && c == '\'')
            break;
        if (z && c == '\"')
            break;
        if (!y && !z && !baz(c))
            break;
    }
    x[i] = 0;
}

int main(void) {
    char buf[64];
    const char *p;
    p = "abcde'fgh";
    foo(&p, buf, 1, 0);
    if (strcmp(p, "fgh") != 0 || strcmp(buf, "abcde") != 0)
        abort();
    p = "ABCDEFG\"HI";
    foo(&p, buf, 0, 1);
    if (strcmp(p, "HI") != 0 || strcmp(buf, "ABCDEFG") != 0)
        abort();
    p = "abcd\"e'fgh";
    foo(&p, buf, 1, 1);
    if (strcmp(p, "e'fgh") != 0 || strcmp(buf, "abcd") != 0)
        abort();
    p = "ABCDEF'G\"HI";
    foo(&p, buf, 1, 1);
    if (strcmp(p, "G\"HI") != 0 || strcmp(buf, "ABCDEF") != 0)
        abort();
    p = "abcdef@gh";
    foo(&p, buf, 0, 0);
    if (strcmp(p, "gh") != 0 || strcmp(buf, "abcdef") != 0)
        abort();
    return 0;
}
