File: std-c-library-functions-vs-stream-checker.c

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (61 lines) | stat: -rw-r--r-- 2,275 bytes parent folder | download | duplicates (6)
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
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
// Check the case when only the StreamChecker is enabled.
// RUN: %clang_analyze_cc1 %s \
// RUN:   -analyzer-checker=core,unix.Stream \
// RUN:   -analyzer-config unix.Stream:Pedantic=true \
// RUN:   -analyzer-checker=debug.ExprInspection \
// RUN:   -analyzer-config eagerly-assume=false \
// RUN:   -triple x86_64-unknown-linux \
// RUN:   -verify=stream

// Check the case when only the StdLibraryFunctionsChecker is enabled.
// RUN: %clang_analyze_cc1 %s \
// RUN:   -analyzer-checker=unix.StdCLibraryFunctions \
// RUN:   -analyzer-config unix.StdCLibraryFunctions:DisplayLoadedSummaries=true \
// RUN:   -analyzer-checker=debug.ExprInspection \
// RUN:   -analyzer-config eagerly-assume=false \
// RUN:   -triple x86_64-unknown-linux \
// RUN:   -verify=stdLib 2>&1 | FileCheck %s

// Check the case when both the StreamChecker and the
// StdLibraryFunctionsChecker are enabled.
// RUN: %clang_analyze_cc1 %s \
// RUN:   -analyzer-checker=core,unix.Stream \
// RUN:   -analyzer-config unix.Stream:Pedantic=true \
// RUN:   -analyzer-checker=unix.StdCLibraryFunctions \
// RUN:   -analyzer-config unix.StdCLibraryFunctions:DisplayLoadedSummaries=true \
// RUN:   -analyzer-checker=debug.ExprInspection \
// RUN:   -analyzer-config eagerly-assume=false \
// RUN:   -triple x86_64-unknown-linux \
// RUN:   -verify=both 2>&1 | FileCheck %s

// Verify that the summaries are loaded when the StdLibraryFunctionsChecker is
// enabled.
//      CHECK: Loaded summary for: int getchar(void)
// CHECK-NEXT: Loaded summary for: unsigned long fread(void *restrict, size_t, size_t, FILE *restrict)
// CHECK-NEXT: Loaded summary for: unsigned long fwrite(const void *restrict, size_t, size_t, FILE *restrict)

#include "Inputs/system-header-simulator.h"

void clang_analyzer_eval(int);

void test_fread_fwrite(FILE *fp, int *buf) {
  fp = fopen("foo", "r");
  if (!fp)
    return;
  size_t x = fwrite(buf, sizeof(int), 10, fp);

  clang_analyzer_eval(x <= 10); // \
 // stream-warning{{TRUE}} \
 // stdLib-warning{{TRUE}} \
 // both-warning{{TRUE}}

  clang_analyzer_eval(x == 10); // \
  // stream-warning{{TRUE}} \
  // stream-warning{{FALSE}} \
  // stdLib-warning{{TRUE}} \
  // stdLib-warning{{FALSE}} \
  // both-warning{{TRUE}} \
  // both-warning{{FALSE}}

  fclose(fp);
}