| /* { 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! |
| } |