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/* 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