forked from OSchip/llvm-project
45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
// RUN: %check_clang_tidy %s bugprone-dynamic-static-initializers %t -- -- -fno-threadsafe-statics
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int fact(int n) {
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return (n == 0) ? 1 : n * fact(n - 1);
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}
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int static_thing = fact(5);
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// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: static variable 'static_thing' may be dynamically initialized in this header file [bugprone-dynamic-static-initializers]
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int sample() {
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int x;
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return x;
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}
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int dynamic_thing = sample();
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// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: static variable 'dynamic_thing' may be dynamically initialized in this header file [bugprone-dynamic-static-initializers]
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int not_so_bad = 12 + 4942; // no warning
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extern int bar();
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int foo() {
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static int k = bar();
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// CHECK-MESSAGES: :[[@LINE-1]]:14: warning: static variable 'k' may be dynamically initialized in this header file [bugprone-dynamic-static-initializers]
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return k;
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}
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int bar2() {
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return 7;
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}
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int foo2() {
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// This may work fine when optimization is enabled because bar() can
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// be turned into a constant 7. But without optimization, it can
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// cause problems. Therefore, we must err on the side of conservatism.
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static int x = bar2();
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// CHECK-MESSAGES: :[[@LINE-1]]:14: warning: static variable 'x' may be dynamically initialized in this header file [bugprone-dynamic-static-initializers]
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return x;
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}
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int foo3() {
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static int p = 7 + 83; // no warning
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return p;
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}
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