diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | generic/tclStringObj.c | 11 |
2 files changed, 13 insertions, 4 deletions
@@ -1,3 +1,9 @@ +2009-01-09 Don Porter <dgp@users.sourceforge.net> + + * generic/tclStringObj.c (STRING_SIZE): Corrected failure to limit + memory allocation requests to the sizes that can be supported by + Tcl's memory allocation routines. [Bug 2494093]. + 2009-01-09 Donal K. Fellows <dkf@users.sf.net> * generic/tclNamesp.c (NamespaceEnsembleCmd): Error out when someone diff --git a/generic/tclStringObj.c b/generic/tclStringObj.c index c834de5..5785d72 100644 --- a/generic/tclStringObj.c +++ b/generic/tclStringObj.c @@ -33,7 +33,7 @@ * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclStringObj.c,v 1.77 2009/01/08 17:58:59 dgp Exp $ */ + * RCS: @(#) $Id: tclStringObj.c,v 1.78 2009/01/09 15:34:33 dgp Exp $ */ #include "tclInt.h" #include "tommath.h" @@ -108,9 +108,12 @@ typedef struct String { #define STRING_UALLOC(numChars) \ ((numChars) * sizeof(Tcl_UniChar)) #define STRING_SIZE(ualloc) \ - ((unsigned) ((ualloc) \ - ? sizeof(String) - sizeof(Tcl_UniChar) + (ualloc) \ - : sizeof(String))) + ((unsigned) ((ualloc) \ + ? ((sizeof(String) - sizeof(Tcl_UniChar) + (ualloc) > INT_MAX) \ + ? Tcl_Panic("unable to alloc %u bytes", \ + sizeof(String) - sizeof(Tcl_UniChar) + (ualloc)), INT_MAX \ + : (sizeof(String) - sizeof(Tcl_UniChar) + (ualloc))) \ + : sizeof(String))) #define GET_STRING(objPtr) \ ((String *) (objPtr)->internalRep.otherValuePtr) #define SET_STRING(objPtr, stringPtr) \ |