diff options
Diffstat (limited to 'generic/tclIOUtil.c')
| -rw-r--r-- | generic/tclIOUtil.c | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/generic/tclIOUtil.c b/generic/tclIOUtil.c index a8401f7..d4b0667 100644 --- a/generic/tclIOUtil.c +++ b/generic/tclIOUtil.c @@ -17,7 +17,7 @@ * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclIOUtil.c,v 1.140 2007/02/20 23:24:04 nijtmans Exp $ + * RCS: @(#) $Id: tclIOUtil.c,v 1.141 2007/03/16 00:57:36 mdejong Exp $ */ #include "tclInt.h" @@ -68,37 +68,40 @@ Tcl_Stat( Tcl_StatBuf buf; Tcl_Obj *pathPtr = Tcl_NewStringObj(path,-1); + Tcl_WideInt tmp1, tmp2; +#ifdef HAVE_ST_BLOCKS + Tcl_WideInt tmp3; +#endif + Tcl_IncrRefCount(pathPtr); ret = Tcl_FSStat(pathPtr, &buf); Tcl_DecrRefCount(pathPtr); if (ret != -1) { #ifndef TCL_WIDE_INT_IS_LONG -# define OUT_OF_RANGE(x) \ +# define OUT_OF_RANGE(x) \ (((Tcl_WideInt)(x)) < Tcl_LongAsWide(LONG_MIN) || \ ((Tcl_WideInt)(x)) > Tcl_LongAsWide(LONG_MAX)) -#if defined(__GNUC__) && __GNUC__ >= 2 -/* - * Workaround gcc warning of "comparison is always false due to limited range of - * data type" in this macro by checking max type size, and when necessary ANDing - * with the complement of ULONG_MAX instead of the comparison: - */ -# define OUT_OF_URANGE(x) \ - ((((Tcl_WideUInt)(~ (__typeof__(x)) 0)) > (Tcl_WideUInt)ULONG_MAX) && \ - (((Tcl_WideUInt)(x)) & ~(Tcl_WideUInt)ULONG_MAX)) -#else -# define OUT_OF_URANGE(x) \ - (((Tcl_WideUInt)(x)) > (Tcl_WideUInt)ULONG_MAX) -#endif +# define OUT_OF_URANGE(x) \ + (((Tcl_WideUInt)(x)) > ((Tcl_WideUInt)ULONG_MAX)) /* * Perform the result-buffer overflow check manually. * * Note that ino_t/ino64_t is unsigned... + * + * Workaround gcc warning of "comparison is always false due to limited range of + * data type" by assigning to tmp var of type Tcl_WideInt. */ - if (OUT_OF_URANGE(buf.st_ino) || OUT_OF_RANGE(buf.st_size) + tmp1 = (Tcl_WideInt) buf.st_ino; + tmp2 = (Tcl_WideInt) buf.st_size; +#ifdef HAVE_ST_BLOCKS + tmp3 = (Tcl_WideInt) buf.st_blocks; +#endif + + if (OUT_OF_URANGE(tmp1) || OUT_OF_RANGE(tmp2) #ifdef HAVE_ST_BLOCKS - || OUT_OF_RANGE(buf.st_blocks) + || OUT_OF_RANGE(tmp3) #endif ) { #ifdef EFBIG |