File: block-in-critical-section-inheritance.cpp

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 (31 lines) | stat: -rw-r--r-- 874 bytes parent folder | download | duplicates (3) 
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
 
// RUN: %clang_analyze_cc1 \
// RUN:   -analyzer-checker=unix.BlockInCriticalSection \
// RUN:   -std=c++11 \
// RUN:   -analyzer-output text \
// RUN:   -verify %s

unsigned int sleep(unsigned int seconds) {return 0;}
namespace std {
// There are some standard library implementations where some mutex methods
// come from an implementation detail base class. We need to ensure that these
// are matched correctly.
class __mutex_base {
public:
  void lock();
};
class mutex : public __mutex_base{
public:
  void unlock();
  bool try_lock();
};
} // namespace std

void gh_99628() {
  std::mutex m;
  m.lock();
  // expected-note@-1 {{Entering critical section here}}
  sleep(10);
  // expected-warning@-1 {{Call to blocking function 'sleep' inside of critical section}}
  // expected-note@-2 {{Call to blocking function 'sleep' inside of critical section}}
  m.unlock();
}