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[compiler-rt][ubsa] Reformat cast-overflow test. NFC #129662

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merged 1 commit into from
Mar 4, 2025
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[compiler-rt][ubsa] Reformat cast-overflow test. NFC #129662

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79 changes: 39 additions & 40 deletions compiler-rt/test/ubsan/TestCases/Float/cast-overflow.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -15,41 +15,41 @@
// This test assumes float and double are IEEE-754 single- and double-precision.

#if defined(__APPLE__)
# include <machine/endian.h>
# define BYTE_ORDER __DARWIN_BYTE_ORDER
# define BIG_ENDIAN __DARWIN_BIG_ENDIAN
# define LITTLE_ENDIAN __DARWIN_LITTLE_ENDIAN
# include <machine/endian.h>
# define BYTE_ORDER __DARWIN_BYTE_ORDER
# define BIG_ENDIAN __DARWIN_BIG_ENDIAN
# define LITTLE_ENDIAN __DARWIN_LITTLE_ENDIAN
#elif defined(__FreeBSD__) || defined(__NetBSD__)
# include <sys/endian.h>
# ifndef BYTE_ORDER
# define BYTE_ORDER _BYTE_ORDER
# endif
# ifndef BIG_ENDIAN
# define BIG_ENDIAN _BIG_ENDIAN
# endif
# ifndef LITTLE_ENDIAN
# define LITTLE_ENDIAN _LITTLE_ENDIAN
# endif
# include <sys/endian.h>
# ifndef BYTE_ORDER
# define BYTE_ORDER _BYTE_ORDER
# endif
# ifndef BIG_ENDIAN
# define BIG_ENDIAN _BIG_ENDIAN
# endif
# ifndef LITTLE_ENDIAN
# define LITTLE_ENDIAN _LITTLE_ENDIAN
# endif
#elif defined(__sun__) && defined(__svr4__)
// Solaris provides _BIG_ENDIAN/_LITTLE_ENDIAN selector in sys/types.h.
# include <sys/types.h>
# define BIG_ENDIAN 4321
# define LITTLE_ENDIAN 1234
# if defined(_BIG_ENDIAN)
# define BYTE_ORDER BIG_ENDIAN
# else
# define BYTE_ORDER LITTLE_ENDIAN
# endif
# include <sys/types.h>
# define BIG_ENDIAN 4321
# define LITTLE_ENDIAN 1234
# if defined(_BIG_ENDIAN)
# define BYTE_ORDER BIG_ENDIAN
# else
# define BYTE_ORDER LITTLE_ENDIAN
# endif
#elif defined(_WIN32)
# define BYTE_ORDER 0
# define BIG_ENDIAN 1
# define LITTLE_ENDIAN 0
# define BYTE_ORDER 0
# define BIG_ENDIAN 1
# define LITTLE_ENDIAN 0
#else
# include <endian.h>
# define BYTE_ORDER __BYTE_ORDER
# define BIG_ENDIAN __BIG_ENDIAN
# define LITTLE_ENDIAN __LITTLE_ENDIAN
#endif // __APPLE__
# include <endian.h>
# define BYTE_ORDER __BYTE_ORDER
# define BIG_ENDIAN __BIG_ENDIAN
# define LITTLE_ENDIAN __LITTLE_ENDIAN
#endif // __APPLE__
#include <stdint.h>
#include <stdio.h>
#include <string.h>
Expand All @@ -59,7 +59,7 @@ float NaN;

int main(int argc, char **argv) {
float MaxFloatRepresentableAsInt = 0x7fffff80;
(int)MaxFloatRepresentableAsInt; // ok
(int)MaxFloatRepresentableAsInt; // ok
(int)-MaxFloatRepresentableAsInt; // ok

float MinFloatRepresentableAsInt = -0x7fffffff - 1;
Expand All @@ -78,18 +78,18 @@ int main(int argc, char **argv) {

// Build a '+Inf'.
#if BYTE_ORDER == LITTLE_ENDIAN
unsigned char InfVal[] = { 0x00, 0x00, 0x80, 0x7f };
unsigned char InfVal[] = {0x00, 0x00, 0x80, 0x7f};
#else
unsigned char InfVal[] = { 0x7f, 0x80, 0x00, 0x00 };
unsigned char InfVal[] = {0x7f, 0x80, 0x00, 0x00};
#endif
float Inf;
memcpy(&Inf, InfVal, 4);

// Build a 'NaN'.
#if BYTE_ORDER == LITTLE_ENDIAN
unsigned char NaNVal[] = { 0x01, 0x00, 0x80, 0x7f };
unsigned char NaNVal[] = {0x01, 0x00, 0x80, 0x7f};
#else
unsigned char NaNVal[] = { 0x7f, 0x80, 0x00, 0x01 };
unsigned char NaNVal[] = {0x7f, 0x80, 0x00, 0x01};
#endif
float NaN;
memcpy(&NaN, NaNVal, 4);
Expand All @@ -107,7 +107,7 @@ int main(int argc, char **argv) {
static int test_int = MaxFloatRepresentableAsInt + 0x80;
// CHECK-0: SUMMARY: {{.*}}Sanitizer: float-cast-overflow {{.*}}cast-overflow.cpp:[[@LINE-1]]
return 0;
}
}
case '1': {
// CHECK-1: {{.*}}cast-overflow.cpp:[[@LINE+1]]:27: runtime error: -2.14748{{.*}} is outside the range of representable values of type 'int'
static int test_int = MinFloatRepresentableAsInt - 0x100;
Expand Down Expand Up @@ -135,16 +135,15 @@ int main(int argc, char **argv) {
static int test_int = NaN;
return 0;
}

// Integer -> floating point overflow.
// Integer -> floating point overflow.
case '6': {
// CHECK-6: cast-overflow.cpp:[[@LINE+2]]:{{27: runtime error: 3.40282e\+38 is outside the range of representable values of type 'int'| __int128 not supported}}
#if defined(__SIZEOF_INT128__) && !defined(_WIN32)
static int test_int = (float)(FloatMaxAsUInt128 + 1);
return 0;
#else
// Print the same line as the check above. That way the test is robust to
// line changes around it
// Print the same line as the check above.
// That way the test is robust to line changes around it
printf("%s:%d: __int128 not supported", __FILE__, __LINE__ - 5);
return 0;
#endif
Expand Down
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