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| 1 | // RUN: %check_clang_tidy %s bugprone-dynamic-static-initializers %t -- -- -fno-threadsafe-statics |
|---|---|
| 2 | |
| 3 | int fact(int n) { |
| 4 | return (n == 0) ? 1 : n * fact(n: n - 1); |
| 5 | } |
| 6 | |
| 7 | int static_thing = fact(n: 5); |
| 8 | // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: static variable 'static_thing' may be dynamically initialized in this header file [bugprone-dynamic-static-initializers] |
| 9 | |
| 10 | int sample() { |
| 11 | int x; |
| 12 | return x; |
| 13 | } |
| 14 | |
| 15 | int dynamic_thing = sample(); |
| 16 | // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: static variable 'dynamic_thing' may be dynamically initialized in this header file [bugprone-dynamic-static-initializers] |
| 17 | |
| 18 | int not_so_bad = 12 + 4942; // no warning |
| 19 | |
| 20 | extern int bar(); |
| 21 | |
| 22 | int foo() { |
| 23 | static int k = bar(); |
| 24 | // CHECK-MESSAGES: :[[@LINE-1]]:14: warning: static variable 'k' may be dynamically initialized in this header file [bugprone-dynamic-static-initializers] |
| 25 | return k; |
| 26 | } |
| 27 | |
| 28 | int bar2() { |
| 29 | return 7; |
| 30 | } |
| 31 | |
| 32 | int foo2() { |
| 33 | // This may work fine when optimization is enabled because bar() can |
| 34 | // be turned into a constant 7. But without optimization, it can |
| 35 | // cause problems. Therefore, we must err on the side of conservatism. |
| 36 | static int x = bar2(); |
| 37 | // CHECK-MESSAGES: :[[@LINE-1]]:14: warning: static variable 'x' may be dynamically initialized in this header file [bugprone-dynamic-static-initializers] |
| 38 | return x; |
| 39 | } |
| 40 | |
| 41 | int foo3() { |
| 42 | static int p = 7 + 83; // no warning |
| 43 | return p; |
| 44 | } |
| 45 |
Warning: That file was not part of the compilation database. It may have many parsing errors.