File: lambdas-modern.cpp

package info (click to toggle)
llvm-toolchain-21 1%3A21.1.0-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 2,235,796 kB
  • sloc: cpp: 7,617,614; ansic: 1,433,901; asm: 1,058,726; python: 252,096; f90: 94,671; objc: 70,753; lisp: 42,813; pascal: 18,401; sh: 10,032; ml: 5,111; perl: 4,720; awk: 3,523; makefile: 3,401; javascript: 2,272; xml: 892; fortran: 770
file content (28 lines) | stat: -rw-r--r-- 838 bytes parent folder | download | duplicates (13)
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
// RUN: %clang_analyze_cc1 -std=c++14 -analyzer-checker=core,debug.ExprInspection -analyzer-config inline-lambdas=true -verify %s
// RUN: %clang_analyze_cc1 -std=c++17 -analyzer-checker=core,debug.ExprInspection -analyzer-config inline-lambdas=true -verify %s

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

void clang_analyzer_warnIfReached();
void clang_analyzer_eval(int);

// Capture copy elided object.
struct Elided{
  int x = 14;
  Elided(int) {}
};

void testCopyElidedObjectCaptured(int x) {
  int r = [e = Elided(x)] {
    return e.x;
  }();
  
  clang_analyzer_eval(r == 14); // expected-warning{{TRUE}}
}

static auto MakeUniquePtr() { return std::make_unique<std::vector<int>>(); }

void testCopyElidedUniquePtr() {
  [uniquePtr = MakeUniquePtr()] {}();
  clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}}
}