| /* Preprocessor arithmetic semantic tests. */ |
| |
| /* Copyright (C) 2002 Free Software Foundation, Inc. */ |
| /* Source: Neil Booth, 26 May 2002. */ |
| |
| /* The file tests overflow warnings for, and values of, preprocessor |
| arithmetic that are dependent on target precision. |
| |
| Please keep changes to arith-2.c and arith-3.c in sync. */ |
| |
| /* { dg-do preprocess } */ |
| /* { dg-options "-std=c99 -fshow-column" } */ |
| |
| #include <limits.h> |
| |
| #define APPEND2(NUM, SUFF) NUM ## SUFF |
| #define APPEND(NUM, SUFF) APPEND2(NUM, SUFF) |
| |
| #define TARGET_UTYPE_MAX ULLONG_MAX |
| |
| /* The tests in this file depend only on the macros defined in this |
| #if block. Note that it is no good calculating these values, as |
| the intent is to test both the preprocessor's number parser and |
| arithmetic. */ |
| #if TARGET_UTYPE_MAX == 65535ULL |
| |
| # define TARG_PRECISION 16 |
| # define MAX_INT 32767 |
| # define MAX_UINT 65535 |
| |
| # define TARG_MAX_HEX 0x7fff |
| # define TARG_MAX_OCT 077777 |
| # define TARG_MAX_PLUS_1 32768L |
| # define TARG_MAX_PLUS_1_U 32768UL |
| # define TARG_MAX_PLUS_1_HEX 0x8000 |
| # define TARG_MAX_PLUS_1_OCT 0100000 |
| # define UTARG_MAX_HEX 0xffff |
| # define UTARG_MAX_OCT 0177777 |
| # define UTARG_MAX_PLUS_1 65536L |
| # define UTARG_MAX_PLUS_1_HEX 0x10000 |
| # define UTARG_MAX_PLUS_1_OCT 0200000 |
| |
| # define TARG_LOWPART_PLUS_1 256L |
| # define TARG_LOWPART_PLUS_1_U 256UL |
| |
| /* Division and modulo; anything that uses the high half in both |
| dividend and divisor. */ |
| # define LONG_UDIVISION 61234UL / 260L |
| # define LONG_UDIVISION_ANSWER 235 |
| # define LONG_SDIVISION -15000L / 299L |
| # define LONG_SDIVISION_ANSWER -50 |
| # define LONG_UMODULO 61234UL % 260L |
| # define LONG_UMODULO_ANSWER 134 |
| # define LONG_SMODULO -15000L % 299L |
| # define LONG_SMODULO_ANSWER -50 |
| |
| #elif TARGET_UTYPE_MAX == 4294967295ULL |
| |
| # define TARG_PRECISION 32 |
| # define MAX_INT 2147483647 |
| # define MAX_UINT 4294967295 |
| |
| # define TARG_MAX_HEX 0x7fffffff |
| # define TARG_MAX_OCT 017777777777 |
| # define TARG_MAX_PLUS_1 2147483648L |
| # define TARG_MAX_PLUS_1_U 2147483648UL |
| # define TARG_MAX_PLUS_1_HEX 0x80000000 |
| # define TARG_MAX_PLUS_1_OCT 020000000000 |
| # define UTARG_MAX_HEX 0xffffffff |
| # define UTARG_MAX_OCT 037777777777 |
| # define UTARG_MAX_PLUS_1 4294967296L |
| # define UTARG_MAX_PLUS_1_HEX 0x100000000 |
| # define UTARG_MAX_PLUS_1_OCT 040000000000 |
| |
| # define TARG_LOWPART_PLUS_1 65536 |
| # define TARG_LOWPART_PLUS_1_U 65536UL |
| |
| /* Division and modulo; anything that uses the high half in both |
| dividend and divisor. */ |
| # define LONG_UDIVISION 268335456UL / 70000L |
| # define LONG_UDIVISION_ANSWER 3833 |
| # define LONG_SDIVISION -368335456L / 123456L |
| # define LONG_SDIVISION_ANSWER -2983 |
| # define LONG_UMODULO 268335456UL % 70000L |
| # define LONG_UMODULO_ANSWER 25456 |
| # define LONG_SMODULO -368335456L % 123456L |
| # define LONG_SMODULO_ANSWER -66208 |
| |
| #elif TARGET_UTYPE_MAX == 18446744073709551615ULL |
| |
| # define TARG_PRECISION 64 |
| # define MAX_INT 9223372036854775807 |
| # define MAX_UINT 18446744073709551615 |
| |
| # define TARG_MAX_HEX 0x7fffffffffffffff |
| # define TARG_MAX_OCT 0777777777777777777777 |
| # define TARG_MAX_PLUS_1 9223372036854775808L |
| # define TARG_MAX_PLUS_1_U 9223372036854775808UL |
| # define TARG_MAX_PLUS_1_HEX 0x8000000000000000 |
| # define TARG_MAX_PLUS_1_OCT 01000000000000000000000 |
| # define UTARG_MAX_HEX 0xffffffffffffffff |
| # define UTARG_MAX_OCT 01777777777777777777777 |
| # define UTARG_MAX_PLUS_1 18446744073709551616L |
| # define UTARG_MAX_PLUS_1_HEX 0x10000000000000000 |
| # define UTARG_MAX_PLUS_1_OCT 02000000000000000000000 |
| |
| # define TARG_LOWPART_PLUS_1 4294967296 |
| # define TARG_LOWPART_PLUS_1_U 4294967296U |
| |
| /* Division and modulo; anything that uses the high half in both |
| dividend and divisor. */ |
| # define LONG_UDIVISION 235184372088832UL / 17279869184L |
| # define LONG_UDIVISION_ANSWER 13610 |
| # define LONG_SDIVISION -234582345927345L / 12345678901L |
| # define LONG_SDIVISION_ANSWER -19001 |
| # define LONG_UMODULO 235184372088832UL % 17279869184L |
| # define LONG_UMODULO_ANSWER 5352494592L |
| # define LONG_SMODULO -234582345927345L % 12345678901L |
| # define LONG_SMODULO_ANSWER -2101129444L |
| |
| #else |
| |
| # error Please extend the macros here so that this file tests your target |
| |
| #endif |
| |
| /* Create more macros based on the above. */ |
| #define TARG_PART_BITS (TARG_PRECISION / 2) |
| #define TARG_MIN (-TARG_MAX - 1) |
| #define TARG_MAX APPEND (MAX_INT, L) |
| #define TARG_MAX_U APPEND (MAX_INT, UL) |
| #define UTARG_MAX APPEND (MAX_UINT, L) |
| #define UTARG_MAX_U APPEND (MAX_UINT, UL) |
| |
| /* And now the tests. */ |
| |
| #if TARG_MAX /* { dg-bogus "so large" } */ |
| #endif |
| #if TARG_MAX_PLUS_1_HEX /* { dg-bogus "so large" } */ |
| #endif |
| #if TARG_MAX_PLUS_1_OCT /* { dg-bogus "so large" } */ |
| #endif |
| |
| #if UTARG_MAX /* { dg-warning "so large" } */ |
| #endif |
| #if UTARG_MAX_PLUS_1 /* { dg-warning "too large" } */ |
| #endif |
| #if UTARG_MAX_PLUS_1_HEX /* { dg-warning "too large" } */ |
| #endif |
| #if UTARG_MAX_HEX /* { dg-bogus "too large" } */ |
| #endif |
| #if UTARG_MAX_PLUS_1_OCT /* { dg-warning "too large" } */ |
| #endif |
| #if UTARG_MAX_OCT /* { dg-bogus "too large" } */ |
| #endif |
| |
| #if TARG_MAX < 0 || TARG_MAX_PLUS_1 < 0 /* { dg-warning "so large" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if UTARG_MAX_HEX < 0 || TARG_MAX_HEX < 0 |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if UTARG_MAX_OCT < 0 || TARG_MAX_OCT < 0 |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if -1 != UTARG_MAX_U |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| |
| |
| |
| /* Test each operator correctly warns of overflow conditions, and |
| gives the right answer. */ |
| |
| /* Binary +. */ |
| #if TARG_MAX + 1 != TARG_MIN /* { dg-warning "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if -TARG_MAX + -2 != TARG_MAX /* { dg-warning "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if -TARG_MAX + -1 != TARG_MIN /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if TARG_MAX_U + 1 != TARG_MIN /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if -TARG_MAX_U + -2 != TARG_MAX /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| |
| |
| |
| /* Binary -. */ |
| #if TARG_MAX - -1 != TARG_MIN /* { dg-warning "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if -TARG_MAX - 2 != TARG_MAX /* { dg-warning "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if -TARG_MAX - 1 != TARG_MIN /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if TARG_MAX_U - -1 != TARG_MIN /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if -TARG_MAX_U - 2 != TARG_MAX /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| |
| |
| |
| |
| /* Binary *. */ |
| #if TARG_LOWPART_PLUS_1 * (TARG_LOWPART_PLUS_1 >> 1) != TARG_MIN /* { dg-warning "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if (TARG_LOWPART_PLUS_1 >> 1) * TARG_LOWPART_PLUS_1 != TARG_MIN /* { dg-warning "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if (TARG_LOWPART_PLUS_1 << 1) * (TARG_LOWPART_PLUS_1 + 1) != (TARG_LOWPART_PLUS_1 << 1) /* { dg-warning "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if TARG_MAX * 1 != TARG_MAX /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if (TARG_MAX >> 1) * 2 != TARG_MAX - 1 /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if (TARG_LOWPART_PLUS_1_U + 61) * (TARG_LOWPART_PLUS_1 << 1) != 61 * (TARG_LOWPART_PLUS_1 << 1) /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if (TARG_LOWPART_PLUS_1 >> 1) * TARG_LOWPART_PLUS_1_U != TARG_MIN /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if 1 * TARG_MIN != TARG_MIN /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| |
| |
| |
| /* Binary /. */ |
| #if TARG_MIN / -1 != TARG_MIN /* { dg-warning "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if TARG_MIN / 1 != TARG_MIN /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if -TARG_MAX_PLUS_1_U / -1 != 0 /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if -5 / (2 - 2) /* { dg-error "13:division by zero" } */ |
| #endif |
| |
| #if LONG_UDIVISION != LONG_UDIVISION_ANSWER |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if LONG_SDIVISION != LONG_SDIVISION_ANSWER |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| /* Binary %. Cannot overflow. */ |
| #if -5 % (2 - 2) /* { dg-error "13:division by zero" } */ |
| #endif |
| |
| #if TARG_MIN % 1 /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if LONG_UMODULO != LONG_UMODULO_ANSWER |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if LONG_SMODULO != LONG_SMODULO_ANSWER |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if 234 % -1U != 234 |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if TARG_MIN % -1U != TARG_MIN |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| /* Binary << and Binary >>, the latter cannot overflow. */ |
| #if -1 >> 3 != -1 /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if TARG_MAX >> 3 != TARG_MAX / 8 /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if 0 << 256 != 0 /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if 1 << 256 != 0 /* { dg-warning "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if 1U << 256 != 0 /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if TARG_MAX << 1 != -2 /* { dg-warning "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if TARG_MAX_U << 1 != -2 /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if TARG_LOWPART_PLUS_1 << TARG_PART_BITS != 0 /* { dg-warning "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if TARG_LOWPART_PLUS_1 << (TARG_PART_BITS - 1) != TARG_MIN /* { dg-warning "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if TARG_LOWPART_PLUS_1_U << (TARG_PART_BITS - 1) != TARG_MIN /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if TARG_LOWPART_PLUS_1 << (TARG_PART_BITS - 2) != (TARG_MAX_PLUS_1_U >> 1) /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| /* Test how the sign bit is handled. */ |
| #if (TARG_MIN << 1) != 0 /* { dg-warning "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if (TARG_MAX_PLUS_1_U << 1) != 0 /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if (TARG_MIN >> 1) != 3U << (TARG_PRECISION - 2) /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if (TARG_MAX_PLUS_1_U >> 1) != 1 << (TARG_PRECISION - 2) /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| |
| |
| /* Unary -. It can overflow in just one case. */ |
| #if -TARG_MIN != TARG_MIN /* { dg-warning "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if - -TARG_MAX != TARG_MAX /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| |
| |
| |
| /* Unary +, ~, and !. They cannot overflow. */ |
| #if +TARG_MAX != TARG_MAX /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if !TARG_MAX + !TARG_MIN != 0 /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if ~TARG_MAX , ~TARG_MIN != TARG_MAX /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| |
| |
| |
| /* Bitwise &, ^, |. They cannot overflow. */ |
| #if (TARG_MAX & -1), (TARG_MIN & -1) != TARG_MIN /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if TARG_MAX | -1, (TARG_MIN | -1) != -1 /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if TARG_MAX ^ -1, (TARG_MIN ^ -1) != TARG_MAX /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| |
| |
| |
| /* Comparison operators. They cannot overflow. */ |
| #if -1 <= TARG_MAX, (TARG_MIN <= 1) != 1 /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if -1 >= TARG_MAX, (TARG_MIN >= 1) != 0 /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if -1 < TARG_MAX, (TARG_MIN < 1) != 1 /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if -1 > TARG_MAX, (TARG_MIN > 1) != 0 /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| |
| |
| |
| /* Comma and ? : operators. They cannot overflow. */ |
| #if -1, TARG_MAX, TARG_MIN != TARG_MIN /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |
| |
| #if -1 ? TARG_MAX: TARG_MAX, 0 ? 1: TARG_MIN != TARG_MIN /* { dg-bogus "overflow" } */ |
| # error /* { dg-bogus "error" } */ |
| #endif |