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