forked from OSchip/llvm-project
33 lines
1.0 KiB
C++
33 lines
1.0 KiB
C++
// RUN: %clang_analyze_cc1 -triple x86_64-unknown-unknown -verify %s \
|
|
// RUN: -analyzer-checker=core,debug.ExprInspection
|
|
|
|
template <typename T> void clang_analyzer_dump(T);
|
|
|
|
__attribute__((always_inline)) static inline constexpr unsigned int _castf32_u32(float __A) {
|
|
return __builtin_bit_cast(unsigned int, __A); // no-warning
|
|
}
|
|
|
|
void test(int i) {
|
|
_castf32_u32(42);
|
|
|
|
float f = 42;
|
|
|
|
// Loading from a floating point value results in unknown,
|
|
// which later materializes as a conjured value.
|
|
auto g = __builtin_bit_cast(unsigned int, f);
|
|
clang_analyzer_dump(g);
|
|
// expected-warning-re@-1 {{{{^conj_\$[0-9]+{unsigned int,}}}}
|
|
|
|
auto g2 = __builtin_bit_cast(unsigned int, 42.0f);
|
|
clang_analyzer_dump(g2);
|
|
// expected-warning-re@-1 {{{{^conj_\$[0-9]+{unsigned int,}}}}
|
|
|
|
auto g3 = __builtin_bit_cast(unsigned int, i);
|
|
clang_analyzer_dump(g3);
|
|
// expected-warning-re@-1 {{{{^reg_\$[0-9]+<int i>}}}}
|
|
|
|
auto g4 = __builtin_bit_cast(unsigned long, &i);
|
|
clang_analyzer_dump(g4);
|
|
// expected-warning@-1 {{&i [as 64 bit integer]}}
|
|
}
|