59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
// RUN: %clang_cc1 -analyze -analyzer-checker=core,unix.Malloc -verify %s
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// expected-no-diagnostics
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typedef struct {
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char I[4];
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int S;
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} Hdr;
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typedef struct {
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short w;
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} Hdr2;
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typedef struct {
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Hdr2 usedtobeundef;
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} Info;
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typedef struct {
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const unsigned char *ib;
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int cur;
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int end;
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} IB;
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unsigned long gl(IB *input);
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inline void gbs(IB *input, unsigned char *buf, int count);
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void getB(IB *st, Hdr2 *usedtobeundef);
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inline unsigned char gb(IB *input) {
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if (input->cur + 1 > input->end)
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;
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return input->ib[(input->cur)++];
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}
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static void getID(IB *st, char str[4]) {
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str[0] = gb(st);
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str[1] = gb(st);
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str[2] = gb(st);
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str[3] = gb(st);
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}
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static void getH(IB *st, Hdr *header) {
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getID (st, header->I);
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header->S = gl(st);
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}
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static void readILBM(IB *st, Info *pic) {
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// Initialize field;
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pic->usedtobeundef.w = 5;
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// Time out in the function so that we will be forced to retry with no inlining.
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Hdr header;
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getH (st, &header);
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getID(st, header.I);
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int i = 0;
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while (st->cur < st->end && i < 4) {
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i++;
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getH (st, &header);
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}
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}
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int bitmapImageRepFromIFF(IB st, const unsigned char *ib, int il) {
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Info pic;
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st.ib = ib;
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st.cur = 0;
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st.end = il;
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readILBM(&st,&pic);
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return pic.usedtobeundef.w; // No undefined value warning here.
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}
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