File: std-c-library-functions-arg-cstring-dependency.c

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-11
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,418,840 kB
  • sloc: cpp: 5,290,826; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,898; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,913; xml: 953; cs: 573; fortran: 539
file content (21 lines) | stat: -rw-r--r-- 948 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
 
// This test case crashes if strncasecmp is modeled in StdCLibraryFunctions.
// Either we fix CStringChecker to handle the call prerequisites in
// checkPreCall, or we must not evaluate any pure functions in
// StdCLibraryFunctions that are also handled in CStringChecker.

// RUN: %clang_analyze_cc1 %s \
// RUN:   -analyzer-checker=core \
// RUN:   -analyzer-checker=apiModeling.StdCLibraryFunctions \
// RUN:   -analyzer-checker=unix.cstring.NullArg \
// RUN:   -analyzer-config apiModeling.StdCLibraryFunctions:ModelPOSIX=true \
// RUN:   -analyzer-checker=alpha.unix.StdCLibraryFunctionArgs \
// RUN:   -triple x86_64-unknown-linux-gnu \
// RUN:   -verify

typedef __typeof(sizeof(int)) size_t;
int strncasecmp(const char *s1, const char *s2, size_t n);

int strncasecmp_null_argument(char *a, size_t n) {
  char *b = 0;
  return strncasecmp(a, b, n); // expected-warning{{Null pointer passed as 2nd argument to string comparison function}}
}