File: debug-exprinspection-istainted.c

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (27 lines) | stat: -rw-r--r-- 1,004 bytes parent folder | download | duplicates (9) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
 
// RUN: %clang_analyze_cc1 -verify %s \
// RUN:   -analyzer-checker=core \
// RUN:   -analyzer-checker=debug.ExprInspection \
// RUN:   -analyzer-checker=alpha.security.taint

int scanf(const char *restrict format, ...);
void clang_analyzer_isTainted(char);
void clang_analyzer_isTainted_any_suffix(char);
void clang_analyzer_isTainted_many_arguments(char, int, int);

void foo(void) {
  char buf[32] = "";
  clang_analyzer_isTainted(buf[0]);            // expected-warning {{NO}}
  clang_analyzer_isTainted_any_suffix(buf[0]); // expected-warning {{NO}}
  scanf("%s", buf);
  clang_analyzer_isTainted(buf[0]);            // expected-warning {{YES}}
  clang_analyzer_isTainted_any_suffix(buf[0]); // expected-warning {{YES}}

  int tainted_value = buf[0]; // no-warning
}

void exactly_one_argument_required(void) {
  char buf[32] = "";
  scanf("%s", buf);
  clang_analyzer_isTainted_many_arguments(buf[0], 42, 42);
  // expected-warning@-1 {{clang_analyzer_isTainted() requires exactly one argument}}
}