diff options
| -rw-r--r-- | generic/tclObj.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/generic/tclObj.c b/generic/tclObj.c index 8aa7dd4..9d37fdc 100644 --- a/generic/tclObj.c +++ b/generic/tclObj.c @@ -346,6 +346,18 @@ typedef struct ResolvedCmdName { * structure can be freed when refCount * becomes zero. */ } ResolvedCmdName; + +#ifdef TCL_MEM_DEBUG +/* + * Filler matches the value used for filling freed memory in tclCkalloc. + * On 32-bit systems, the ref counts do not cross 0x7fffffff. On 64-bit + * implementations, ref counts will never reach this value (unless explicitly + * incremented without actual references!) + */ +#define FREEDREFCOUNTFILLER \ + (sizeof(objPtr->refCount) == 4 ? 0xe8e8e8e8 : 0xe8e8e8e8e8e8e8e8) +#endif + /* *------------------------------------------------------------------------- @@ -3736,7 +3748,7 @@ Tcl_DbIncrRefCount( int line) /* Line number in the source file; used for * debugging. */ { - if (objPtr->refCount == 0x61616161) { + if (objPtr->refCount == FREEDREFCOUNTFILLER) { fprintf(stderr, "file = %s, line = %d\n", file, line); fflush(stderr); Tcl_Panic("incrementing refCount of previously disposed object"); @@ -3809,7 +3821,7 @@ Tcl_DbDecrRefCount( int line) /* Line number in the source file; used for * debugging. */ { - if (objPtr->refCount == 0x61616161) { + if (objPtr->refCount == FREEDREFCOUNTFILLER) { fprintf(stderr, "file = %s, line = %d\n", file, line); fflush(stderr); Tcl_Panic("decrementing refCount of previously disposed object"); @@ -3891,7 +3903,7 @@ Tcl_DbIsShared( #endif { #ifdef TCL_MEM_DEBUG - if (objPtr->refCount == 0x61616161) { + if (objPtr->refCount == FREEDREFCOUNTFILLER) { fprintf(stderr, "file = %s, line = %d\n", file, line); fflush(stderr); Tcl_Panic("checking whether previously disposed object is shared"); |