| 1 | // RUN: %clang_analyze_cc1 -analyzer-checker=core,unix.Malloc -verify %s |
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| 2 | // expected-no-diagnostics |
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| 3 | |
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| 4 | typedef struct { |
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| 5 | char I[4]; |
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| 6 | int S; |
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| 7 | } Hdr; |
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| 8 | typedef struct { |
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| 9 | short w; |
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| 10 | } Hdr2; |
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| 11 | typedef struct { |
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| 12 | Hdr2 usedtobeundef; |
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| 13 | } Info; |
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| 14 | typedef struct { |
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| 15 | const unsigned char *ib; |
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| 16 | int cur; |
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| 17 | int end; |
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| 18 | } IB; |
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| 19 | unsigned long gl(IB *input); |
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| 20 | inline void gbs(IB *input, unsigned char *buf, int count); |
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| 21 | void getB(IB *st, Hdr2 *usedtobeundef); |
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| 22 | inline unsigned char gb(IB *input) { |
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| 23 | if (input->cur + 1 > input->end) |
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| 24 | ; |
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| 25 | return input->ib[(input->cur)++]; |
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| 26 | } |
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| 27 | static void getID(IB *st, char str[4]) { |
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| 28 | str[0] = gb(st); |
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| 29 | str[1] = gb(st); |
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| 30 | str[2] = gb(st); |
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| 31 | str[3] = gb(st); |
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| 32 | } |
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| 33 | static void getH(IB *st, Hdr *header) { |
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| 34 | getID (st, header->I); |
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| 35 | header->S = gl(st); |
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| 36 | } |
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| 37 | static void readILBM(IB *st, Info *pic) { |
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| 38 | // Initialize field; |
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| 39 | pic->usedtobeundef.w = 5; |
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| 40 | |
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| 41 | // Time out in the function so that we will be forced to retry with no inlining. |
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| 42 | Hdr header; |
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| 43 | getH (st, &header); |
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| 44 | getID(st, header.I); |
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| 45 | int i = 0; |
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| 46 | while (st->cur < st->end && i < 4) { |
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| 47 | i++; |
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| 48 | getH (st, &header); |
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| 49 | } |
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| 50 | } |
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| 51 | int bitmapImageRepFromIFF(IB st, const unsigned char *ib, int il) { |
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| 52 | Info pic; |
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| 53 | st.ib = ib; |
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| 54 | st.cur = 0; |
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| 55 | st.end = il; |
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| 56 | readILBM(&st,&pic); |
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| 57 | return pic.usedtobeundef.w; // No undefined value warning here. |
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| 58 | } |
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| 59 | |
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