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authornijtmans <nijtmans>2010-12-06 09:01:49 (GMT)
committernijtmans <nijtmans>2010-12-06 09:01:49 (GMT)
commit5686ea4acac17705c9704829c24608749acd3d12 (patch)
tree82897612b5989945d086ccb23f71868fe1a656f6 /generic
parent3a3eeca75b5436a7b68e1464811bdc3528d20cf0 (diff)
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[Bug 3129448]: possible over-allocation on 64-bit platforms
Diffstat (limited to 'generic')
-rw-r--r--generic/tclBinary.c6
-rw-r--r--generic/tclCkalloc.c8
-rw-r--r--generic/tclTrace.c27
3 files changed, 20 insertions, 21 deletions
diff --git a/generic/tclBinary.c b/generic/tclBinary.c
index b40e109..6036f31 100644
--- a/generic/tclBinary.c
+++ b/generic/tclBinary.c
@@ -10,7 +10,7 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclBinary.c,v 1.67 2010/11/19 10:17:22 nijtmans Exp $
+ * RCS: @(#) $Id: tclBinary.c,v 1.68 2010/12/06 09:01:49 nijtmans Exp $
*/
#include "tclInt.h"
@@ -174,13 +174,13 @@ typedef struct ByteArray {
* array. */
int allocated; /* The amount of space actually allocated
* minus 1 byte. */
- unsigned char bytes[4]; /* The array of bytes. The actual size of this
+ unsigned char bytes[1]; /* The array of bytes. The actual size of this
* field depends on the 'allocated' field
* above. */
} ByteArray;
#define BYTEARRAY_SIZE(len) \
- ((unsigned) (sizeof(ByteArray) - 4 + (len)))
+ ((unsigned) (TclOffset(ByteArray, bytes) + (len)))
#define GET_BYTEARRAY(objPtr) \
((ByteArray *) (objPtr)->internalRep.otherValuePtr)
#define SET_BYTEARRAY(objPtr, baPtr) \
diff --git a/generic/tclCkalloc.c b/generic/tclCkalloc.c
index dbd999e..4314554 100644
--- a/generic/tclCkalloc.c
+++ b/generic/tclCkalloc.c
@@ -14,7 +14,7 @@
*
* This code contributed by Karl Lehenbauer and Mark Diekhans
*
- * RCS: @(#) $Id: tclCkalloc.c,v 1.41 2010/12/01 10:43:36 nijtmans Exp $
+ * RCS: @(#) $Id: tclCkalloc.c,v 1.42 2010/12/06 09:01:49 nijtmans Exp $
*/
#include "tclInt.h"
@@ -32,12 +32,12 @@
typedef struct MemTag {
int refCount; /* Number of mem_headers referencing this
* tag. */
- char string[4]; /* Actual size of string will be as large as
+ char string[1]; /* Actual size of string will be as large as
* needed for actual tag. This must be the
* last field in the structure. */
} MemTag;
-#define TAG_SIZE(bytesInString) ((unsigned) sizeof(MemTag) + bytesInString - 3)
+#define TAG_SIZE(bytesInString) ((unsigned) ((TclOffset(MemTag, string) + 1) + bytesInString))
static MemTag *curTagPtr = NULL;/* Tag to use in all future mem_headers (set
* by "memory tag" command). */
@@ -185,7 +185,7 @@ TclDumpMemoryInfo(ClientData clientData, int flags)
maximum_malloc_packets,
maximum_bytes_malloced);
if (flags == 0) {
- fprintf((FILE *)clientData, buf);
+ fprintf((FILE *)clientData, "%s", buf);
} else {
/* Assume objPtr to append to */
Tcl_AppendToObj((Tcl_Obj *) clientData, buf, -1);
diff --git a/generic/tclTrace.c b/generic/tclTrace.c
index 2e8759e..efbfbb7 100644
--- a/generic/tclTrace.c
+++ b/generic/tclTrace.c
@@ -11,7 +11,7 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclTrace.c,v 1.60 2010/08/22 18:53:26 nijtmans Exp $
+ * RCS: @(#) $Id: tclTrace.c,v 1.61 2010/12/06 09:01:49 nijtmans Exp $
*/
#include "tclInt.h"
@@ -24,11 +24,11 @@ typedef struct {
int flags; /* Operations for which Tcl command is to be
* invoked. */
size_t length; /* Number of non-NUL chars. in command. */
- char command[4]; /* Space for Tcl command to invoke. Actual
+ char command[1]; /* Space for Tcl command to invoke. Actual
* size will be as large as necessary to hold
* command. This field must be the last in the
- * structure, so that it can be larger than 4
- * bytes. */
+ * structure, so that it can be larger than 1
+ * byte. */
} TraceVarInfo;
typedef struct {
@@ -58,11 +58,11 @@ typedef struct {
* deleted too early. Keeps track of how many
* pieces of code have a pointer to this
* structure. */
- char command[4]; /* Space for Tcl command to invoke. Actual
+ char command[1]; /* Space for Tcl command to invoke. Actual
* size will be as large as necessary to hold
* command. This field must be the last in the
- * structure, so that it can be larger than 4
- * bytes. */
+ * structure, so that it can be larger than 1
+ * byte. */
} TraceCommandInfo;
/*
@@ -464,9 +464,8 @@ TraceExecutionObjCmd(
length = (size_t) commandLength;
if ((enum traceOptions) optionIndex == TRACE_ADD) {
TraceCommandInfo *tcmdPtr = (TraceCommandInfo *)
- ckalloc((unsigned) (sizeof(TraceCommandInfo)
- - sizeof(tcmdPtr->command) + length + 1));
-
+ ckalloc((unsigned) ((TclOffset(TraceCommandInfo, command)
+ + 1) + length));
tcmdPtr->flags = flags;
tcmdPtr->stepTrace = NULL;
tcmdPtr->startLevel = 0;
@@ -701,8 +700,8 @@ TraceCommandObjCmd(
length = (size_t) commandLength;
if ((enum traceOptions) optionIndex == TRACE_ADD) {
TraceCommandInfo *tcmdPtr = (TraceCommandInfo *)
- ckalloc((unsigned) (sizeof(TraceCommandInfo)
- - sizeof(tcmdPtr->command) + length + 1));
+ ckalloc((unsigned) ((TclOffset(TraceCommandInfo, command)
+ + 1) + length));
tcmdPtr->flags = flags;
tcmdPtr->stepTrace = NULL;
@@ -902,8 +901,8 @@ TraceVariableObjCmd(
length = (size_t) commandLength;
if ((enum traceOptions) optionIndex == TRACE_ADD) {
CombinedTraceVarInfo *ctvarPtr = (CombinedTraceVarInfo *)
- ckalloc((unsigned) (sizeof(CombinedTraceVarInfo)
- + length + 1 - sizeof(ctvarPtr->traceCmdInfo.command)));
+ ckalloc((unsigned) ((TclOffset(CombinedTraceVarInfo,
+ traceCmdInfo.command) + 1) + length));
ctvarPtr->traceCmdInfo.flags = flags;
if (objv[0] == NULL) {