clang/test/Analysis/return-stmt-merge.cpp

   1 // 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
   2
   3 // This test ensures that check::LiveSymbols is called as many times on the
   4 // path through the second "return" as it is through the first "return"
   5 // (three), and therefore the two paths were not merged prematurely before the
   6 // respective return statement is evaluated.
   7 // The paths would still be merged later, so we'd have only one post-call for
   8 // foo(), but it is incorrect to merge them in the middle of evaluating two
   9 // different statements.
  10 int coin();
  11
  12 void foo() {
  13   int x = coin();
  14   if (x > 0)
  15     return;
  16   else
  17     return;
  18 }
  19
  20 void bar() {
  21   foo();
  22 }
  23
  24 // CHECK:      LiveSymbols
  25 // CHECK-NEXT: LiveSymbols
  26 // CHECK-NEXT: PreCall (foo)
  27 // CHECK-NEXT: LiveSymbols
  28 // CHECK-NEXT: LiveSymbols
  29 // CHECK-NEXT: PreCall (coin)
  30 // CHECK-NEXT: PostCall (coin)
  31 // CHECK-NEXT: LiveSymbols
  32 // CHECK-NEXT: LiveSymbols
  33 // CHECK-NEXT: LiveSymbols
  34 // CHECK-NEXT: PostCall (foo)
  35 // CHECK-NEXT: LiveSymbols
  36 // CHECK-NEXT: LiveSymbols
  37 // CHECK-NEXT: LiveSymbols