diff options
Diffstat (limited to 'doc/Alloc.3')
| -rw-r--r-- | doc/Alloc.3 | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/doc/Alloc.3 b/doc/Alloc.3 index 541f300..585704a 100644 --- a/doc/Alloc.3 +++ b/doc/Alloc.3 @@ -4,10 +4,8 @@ '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" -'\" RCS: @(#) $Id: Alloc.3,v 1.9 2004/09/06 09:44:56 dkf Exp $ -'\" -.so man.macros .TH Tcl_Alloc 3 7.5 Tcl "Tcl Library Procedures" +.so man.macros .BS .SH NAME Tcl_Alloc, Tcl_Free, Tcl_Realloc, Tcl_AttemptAlloc, Tcl_AttemptRealloc, ckalloc, ckfree, ckrealloc, attemptckalloc, attemptckrealloc \- allocate or free heap memory @@ -46,7 +44,7 @@ char * \fBattemptckrealloc\fR(\fIptr, size\fR) .SH ARGUMENTS .AS char *size -.AP int size in +.AP "unsigned int" size in Size in bytes of the memory block to allocate. .AP char *ptr in Pointer to memory block to free or realloc. @@ -69,15 +67,17 @@ further allocation. \fBTcl_Realloc\fR changes the size of the block pointed to by \fIptr\fR to \fIsize\fR bytes and returns a pointer to the new block. The contents will be unchanged up to the lesser of the new and old -sizes. The returned location may be different from \fIptr\fR. +sizes. The returned location may be different from \fIptr\fR. If +\fIptr\fR is NULL, this is equivalent to calling \fBTcl_Alloc\fR with +just the \fIsize\fR argument. .PP \fBTcl_AttemptAlloc\fR and \fBTcl_AttemptRealloc\fR are identical in function to \fBTcl_Alloc\fR and \fBTcl_Realloc\fR, except that \fBTcl_AttemptAlloc\fR and \fBTcl_AttemptRealloc\fR will not cause the Tcl interpreter to \fBpanic\fR if the memory allocation fails. If the allocation fails, these functions will return NULL. Note that on some -platforms, attempting to allocate a block of memory will also cause -these functions to return NULL. +platforms, but not all, attempting to allocate a zero-sized block of +memory will also cause these functions to return NULL. .PP The procedures \fBckalloc\fR, \fBckfree\fR, \fBckrealloc\fR, \fBattemptckalloc\fR, and \fBattemptckrealloc\fR are implemented |