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-'\"
-'\" Copyright (c) 1995-1996 Sun Microsystems, Inc.
-'\"
-'\" See the file "license.terms" for information on usage and redistribution
-'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
-.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
-.SH SYNOPSIS
-.nf
-\fB#include <tcl.h>\fR
-.sp
-char *
-\fBTcl_Alloc\fR(\fIsize\fR)
-.sp
-void
-\fBTcl_Free\fR(\fIptr\fR)
-.sp
-char *
-\fBTcl_Realloc\fR(\fIptr, size\fR)
-.sp
-char *
-\fBTcl_AttemptAlloc\fR(\fIsize\fR)
-.sp
-char *
-\fBTcl_AttemptRealloc\fR(\fIptr, size\fR)
-.sp
-char *
-\fBckalloc\fR(\fIsize\fR)
-.sp
-void
-\fBckfree\fR(\fIptr\fR)
-.sp
-char *
-\fBckrealloc\fR(\fIptr, size\fR)
-.sp
-char *
-\fBattemptckalloc\fR(\fIsize\fR)
-.sp
-char *
-\fBattemptckrealloc\fR(\fIptr, size\fR)
-.SH ARGUMENTS
-.AS char *size
-.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.
-.BE
-
-.SH DESCRIPTION
-.PP
-These procedures provide a platform and compiler independent interface
-for memory allocation.  Programs that need to transfer ownership of
-memory blocks between Tcl and other modules should use these routines
-rather than the native \fBmalloc()\fR and \fBfree()\fR routines
-provided by the C run-time library.
-.PP
-\fBTcl_Alloc\fR returns a pointer to a block of at least \fIsize\fR
-bytes suitably aligned for any use.
-.PP
-\fBTcl_Free\fR makes the space referred to by \fIptr\fR available for
-further allocation.
-.PP
-\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.  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, 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
-as macros.  Normally, they are synonyms for the corresponding
-procedures documented on this page.  When Tcl and all modules
-calling Tcl are compiled with \fBTCL_MEM_DEBUG\fR defined, however,
-these macros are redefined to be special debugging versions
-of these procedures.  To support Tcl's memory debugging within a
-module, use the macros rather than direct calls to \fBTcl_Alloc\fR, etc.
-
-.SH KEYWORDS
-alloc, allocation, free, malloc, memory, realloc, TCL_MEM_DEBUG