clang/test/Analysis/engine/replay-without-inlining.c

   1 // RUN: %clang_analyze_cc1 -analyzer-checker=core,unix.Malloc -verify %s
   2 // expected-no-diagnostics
   3
   4 typedef struct {
   5     char I[4];
   6     int S;
   7 } Hdr;
   8 typedef struct {
   9     short w;
  10 } Hdr2;
  11 typedef struct {
  12     Hdr2 usedtobeundef;
  13 } Info;
  14 typedef struct {
  15     const unsigned char *ib;
  16     int cur;
  17     int end;
  18 } IB;
  19 unsigned long gl(IB *input);
  20 inline void gbs(IB *input, unsigned char *buf, int count);
  21 void getB(IB *st, Hdr2 *usedtobeundef);
  22 inline unsigned char gb(IB *input) {
  23     if (input->cur + 1 > input->end)
  24       ;
  25     return input->ib[(input->cur)++];
  26 }
  27 static 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 }
  33 static void getH(IB *st, Hdr *header) {
  34     getID (st, header->I);
  35     header->S = gl(st);
  36 }
  37 static 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 }
  51 int 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 }