72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
|
// RUN: %clang_analyze_cc1 -std=c++14 %s \
|
||
|
|
// RUN: -analyzer-checker=debug.DumpDominators \
|
||
|
|
// RUN: -analyzer-checker=debug.DumpPostDominators \
|
||
|
|
// RUN: -analyzer-checker=debug.DumpControlDependencies \
|
||
|
|
// RUN: 2>&1 | FileCheck %s
|
||
|
|
|
||
|
|
bool coin();
|
||
|
|
|
||
|
|
namespace pr42041_unreachable_cfg_successor {
|
||
|
|
enum Kind {
|
||
|
|
A
|
||
|
|
};
|
||
|
|
|
||
|
|
void f() {
|
||
|
|
switch(Kind{}) {
|
||
|
|
case A:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} // end of namespace pr42041_unreachable_cfg_successor
|
||
|
|
|
||
|
|
// [B3 (ENTRY)] -> [B1] -> [B2] -> [B0 (EXIT)]
|
||
|
|
|
||
|
|
// CHECK: Control dependencies (Node#,Dependency#):
|
||
|
|
// CHECK-NEXT: Immediate dominance tree (Node#,IDom#):
|
||
|
|
// CHECK-NEXT: (0,2)
|
||
|
|
// CHECK-NEXT: (1,3)
|
||
|
|
// CHECK-NEXT: (2,1)
|
||
|
|
// CHECK-NEXT: (3,3)
|
||
|
|
// CHECK-NEXT: Immediate post dominance tree (Node#,IDom#):
|
||
|
|
// CHECK-NEXT: (0,0)
|
||
|
|
// CHECK-NEXT: (1,2)
|
||
|
|
// CHECK-NEXT: (2,0)
|
||
|
|
// CHECK-NEXT: (3,1)
|
||
|
|
|
||
|
|
void funcWithBranch() {
|
||
|
|
int x = 0;
|
||
|
|
if (coin()) {
|
||
|
|
if (coin()) {
|
||
|
|
x = 5;
|
||
|
|
}
|
||
|
|
int j = 10 / x;
|
||
|
|
(void)j;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// 1st if 2nd if
|
||
|
|
// [B5 (ENTRY)] -> [B4] -> [B3] -> [B2] -> [B1] -> [B0 (EXIT)]
|
||
|
|
// \ \ / /
|
||
|
|
// \ -------------> /
|
||
|
|
// ------------------------------>
|
||
|
|
|
||
|
|
// CHECK: Control dependencies (Node#,Dependency#):
|
||
|
|
// CHECK-NEXT: (1,4)
|
||
|
|
// CHECK-NEXT: (2,3)
|
||
|
|
// CHECK-NEXT: (2,4)
|
||
|
|
// CHECK-NEXT: (3,4)
|
||
|
|
// CHECK-NEXT: Immediate dominance tree (Node#,IDom#):
|
||
|
|
// CHECK-NEXT: (0,4)
|
||
|
|
// CHECK-NEXT: (1,3)
|
||
|
|
// CHECK-NEXT: (2,3)
|
||
|
|
// CHECK-NEXT: (3,4)
|
||
|
|
// CHECK-NEXT: (4,5)
|
||
|
|
// CHECK-NEXT: (5,5)
|
||
|
|
// CHECK-NEXT: Immediate post dominance tree (Node#,IDom#):
|
||
|
|
// CHECK-NEXT: (0,0)
|
||
|
|
// CHECK-NEXT: (1,0)
|
||
|
|
// CHECK-NEXT: (2,1)
|
||
|
|
// CHECK-NEXT: (3,1)
|
||
|
|
// CHECK-NEXT: (4,0)
|
||
|
|
// CHECK-NEXT: (5,4)
|