File: return-stmt-merge.cpp

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,436 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (37 lines) | stat: -rw-r--r-- 1,188 bytes parent folder | download | duplicates (27)
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
// RUN: %clang_analyze_cc1 -analyzer-checker=debug.AnalysisOrder,debug.ExprInspection -analyzer-config debug.AnalysisOrder:PreCall=true,debug.AnalysisOrder:PostCall=true,debug.AnalysisOrder:LiveSymbols=true %s 2>&1 | FileCheck %s

// This test ensures that check::LiveSymbols is called as many times on the
// path through the second "return" as it is through the first "return"
// (three), and therefore the two paths were not merged prematurely before the
// respective return statement is evaluated.
// The paths would still be merged later, so we'd have only one post-call for
// foo(), but it is incorrect to merge them in the middle of evaluating two
// different statements.
int coin();

void foo() {
  int x = coin();
  if (x > 0)
    return;
  else
    return;
}

void bar() {
  foo();
}

// CHECK:      LiveSymbols
// CHECK-NEXT: LiveSymbols
// CHECK-NEXT: PreCall (foo)
// CHECK-NEXT: LiveSymbols
// CHECK-NEXT: LiveSymbols
// CHECK-NEXT: PreCall (coin)
// CHECK-NEXT: PostCall (coin)
// CHECK-NEXT: LiveSymbols
// CHECK-NEXT: LiveSymbols
// CHECK-NEXT: LiveSymbols
// CHECK-NEXT: PostCall (foo)
// CHECK-NEXT: LiveSymbols
// CHECK-NEXT: LiveSymbols
// CHECK-NEXT: LiveSymbols