1// RUN: %clang_cc1 -analyze -analyzer-checker=core,unix.Malloc -verify %s
2// expected-no-diagnostics
3
4typedef struct {
5    char I[4];
6    int S;
7} Hdr;
8typedef struct {
9    short w;
10} Hdr2;
11typedef struct {
12    Hdr2 usedtobeundef;
13} Info;
14typedef struct {
15    const unsigned char *ib;
16    int cur;
17    int end;
18} IB;
19unsigned long gl(IB *input);
20inline void gbs(IB *input, unsigned char *buf, int count);
21void getB(IB *st, Hdr2 *usedtobeundef);
22inline unsigned char gb(IB *input) {
23    if (input->cur + 1 > input->end)
24      ;
25    return input->ib[(input->cur)++];
26}
27static void getID(IB *st, char str[4]) {
28    str[0] = gb(st);
29    str[1] = gb(st);
30    str[2] = gb(st);
31    str[3] = gb(st);
32}
33static void getH(IB *st, Hdr *header) {
34    getID (st, header->I);
35    header->S = gl(st);
36}
37static void readILBM(IB *st, Info *pic) {
38    // Initialize field;
39    pic->usedtobeundef.w = 5;
40
41    // Time out in the function so that we will be forced to retry with no inlining.
42    Hdr header;
43    getH (st, &header);
44    getID(st, header.I);
45    int i = 0;
46    while (st->cur < st->end && i < 4) {
47      i++;
48      getH (st, &header);
49    }
50}
51int bitmapImageRepFromIFF(IB st, const unsigned char *ib, int il) {
52    Info pic;
53    st.ib = ib;
54    st.cur = 0;
55    st.end = il;
56    readILBM(&st,&pic);
57    return pic.usedtobeundef.w; // No undefined value warning here.
58}
59