clang/test/Analysis/std-c-library-functions-arg-constraints-tracking-notes.c

   1 // Check the bugpath related to the reports.
   2 // RUN: %clang_analyze_cc1 %s \
   3 // RUN:   -analyzer-checker=core \
   4 // RUN:   -analyzer-checker=apiModeling.StdCLibraryFunctions \
   5 // RUN:   -analyzer-checker=alpha.unix.StdCLibraryFunctionArgs \
   6 // RUN:   -analyzer-checker=debug.StdCLibraryFunctionsTester \
   7 // RUN:   -analyzer-checker=debug.ExprInspection \
   8 // RUN:   -triple x86_64-unknown-linux-gnu \
   9 // RUN:   -analyzer-output=text \
  10 // RUN:   -verify=bugpath
  11
  12 typedef typeof(sizeof(int)) size_t;
  13
  14 int __buf_size_arg_constraint(const void *, size_t);
  15 void test_buf_size_concrete(void) {
  16   char buf[3];                       // bugpath-note{{'buf' initialized here}}
  17   int s = 4;                         // bugpath-note{{'s' initialized to 4}}
  18   __buf_size_arg_constraint(buf, s); // \
  19   // bugpath-warning{{Function argument constraint is not satisfied}} \
  20   // bugpath-note{{}} \
  21   // bugpath-note{{Function argument constraint is not satisfied}}
  22 }
  23
  24 int __buf_size_arg_constraint_mul(const void *, size_t, size_t);
  25 void test_buf_size_concrete_with_multiplication(void) {
  26   short buf[3];                               // bugpath-note{{'buf' initialized here}}
  27   int s1 = 4;                                 // bugpath-note{{'s1' initialized to 4}}
  28   int s2 = sizeof(short);                     // bugpath-note{{'s2' initialized to}}
  29   __buf_size_arg_constraint_mul(buf, s1, s2); // \
  30   // bugpath-warning{{Function argument constraint is not satisfied}} \
  31   // bugpath-note{{}} \
  32   // bugpath-note{{Function argument constraint is not satisfied}}
  33 }