diff options
Diffstat (limited to 'gdb/defs.h')
| -rw-r--r-- | gdb/defs.h | 26 |
1 files changed, 4 insertions, 22 deletions
@@ -501,7 +501,8 @@ enum val_prettyprint #endif /* STDC */ #endif /* volatile */ -/* Defaults for system-wide constants (if not defined by xm.h, we fake it). */ +/* Defaults for system-wide constants (if not defined by xm.h, we fake it). + FIXME: Assumes 2's complement arithmetic */ #if !defined (UINT_MAX) #define UINT_MAX ((unsigned int)(~0)) /* 0xFFFFFFFF for 32-bits */ @@ -512,7 +513,7 @@ enum val_prettyprint #endif #if !defined (INT_MIN) -#define INT_MIN (-INT_MAX - 1) /* 0x80000000 for 32-bits */ +#define INT_MIN ((int)((int) ~0 ^ INT_MAX)) /* 0x80000000 for 32-bits */ #endif #if !defined (ULONG_MAX) @@ -531,27 +532,8 @@ enum val_prettyprint #else /* No BFD64 */ -/* If all compilers for this host support "long long" and we want to - use it for LONGEST (the performance hit is about 10% on a testsuite - run based on one DECstation test), then the xm.h file can define - CC_HAS_LONG_LONG. - - Using GCC 1.39 on BSDI with long long causes about 700 new - testsuite failures. Using long long for LONGEST on the DECstation - causes 3 new FAILs in the testsuite and many heuristic fencepost - warnings. These are not investigated, but a first guess would be - that the BSDI problems are GCC bugs in long long support and the - latter are GDB bugs. */ - -#ifndef CC_HAS_LONG_LONG -# if defined (__GNUC__) && defined (FORCE_LONG_LONG) -# define CC_HAS_LONG_LONG 1 -# endif -#endif - /* LONGEST should not be a typedef, because "unsigned LONGEST" needs to work. - CC_HAS_LONG_LONG is defined if the host compiler supports "long long" - variables and we wish to make use of that support. */ + CC_HAS_LONG_LONG is defined if the host compiler supports "long long" */ #ifndef LONGEST # ifdef CC_HAS_LONG_LONG |