Mercurial > hg > CbC > CbC_gcc
diff gcc/testsuite/c-c++-common/pr43772.c @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/testsuite/c-c++-common/pr43772.c Fri Oct 27 22:46:09 2017 +0900 @@ -0,0 +1,45 @@ +/* { dg-do compile } */ +/* { dg-options "-Wlogical-op -Wtype-limits" } */ +#include <limits.h> +long long +emacs_lseek (long long offset) +{ + return -1-9223372036854775807LL <= offset && offset <= 9223372036854775807LL; +} + +long long +foo (long long offset) +{ + return -1-9223372036854775807LL > offset && offset > 9223372036854775807LL; +} + +long long +foo3 (long long offset) +{ + return -1-9223372036854775807LL > offset && offset < 9223372036854775807LL; +} + +long long +foo2 (long long offset) +{ + if (-1-9223372036854775807LL <= offset) return 0; + if (offset <= 9223372036854775807LL) return 0; + if (-1-9223372036854775807LL > offset) return 0; + if (offset > 9223372036854775807LL) return 0; + return 1; +} + +# define BOT INT_MIN +# define TOP INT_MAX + +long long get_intmax(void); +int get_int(void); +extern void do_something(void); +int main(void) +{ + int i = get_int(); + long long x = get_intmax(); + i = (i > BOT && i < TOP); //OK + i = (i >= BOT+1 && i <= TOP-1); //OK + i = (i >= BOT && i <= TOP); //Oops! +}