sys-fs/hfsutils: fix tcl allocator usage in tests

Tests used Tcl_Alloc() / malloc() and Tcl_Free() / free()
interchangeably. Nowadays TCL allocator now requires correct
alloc/free functions to be used.

The patch fixes all the test crashes for me on amd64.

Reported-by: Roy Bamford
Closes: https://bugs.gentoo.org/757924
Package-Manager: Portage-3.0.11, Repoman-3.0.2
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>

sys-fs/hfsutils/files/hfsutils-3.2.6-test-tcl-8.6.patch

@@ -0,0 +1,62 @@
+Use Tcl_Free() for arguments allocated with Tcl_SplitList().
+Use Tcl_Alloc() for arguments passed to tcl to be freed by TCL_DYNAMIC.
+
+https://bugs.gentoo.org/757924
+--- a/tclhfs.c
++++ b/tclhfs.c
+@@ -1313,7 +1313,7 @@ int cmd_hfs(ClientData clientData, Tcl_Interp *interp,
+ 	  badblocks = ALLOCX(unsigned long, listc);
+ 	  if (listc && badblocks == 0)
+ 	    {
+-	      free(listv);
++	      Tcl_Free((char *) listv);
+ 
+ 	      interp->result = "out of memory";
+ 	      return TCL_ERROR;
+@@ -1324,13 +1324,13 @@ int cmd_hfs(ClientData clientData, Tcl_Interp *interp,
+ 	      if (Tcl_ExprLong(interp, listv[i],
+ 			       (long *) &badblocks[i]) != TCL_OK)
+ 		{
+-		  free(listv);
++		  Tcl_Free((char *) listv);
+ 		  FREE(badblocks);
+ 		  return TCL_ERROR;
+ 		}
+ 	    }
+ 
+-	  free(listv);
++	  Tcl_Free((char *) listv);
+ 
+ 	  if (do_format(argv[2], partno, 0, argv[4], listc, badblocks) == -1)
+ 	    {
+--- a/tclhfs.c
++++ b/tclhfs.c
+@@ -378,7 +378,7 @@ int file_cmd(ClientData clientData, Tcl_Interp *interp,
+ 	      return TCL_ERROR;
+ 	    }
+ 
+-	  mem = ALLOC(char, bytes + 1);
++	  mem = Tcl_Alloc(bytes + 1);
+ 	  if (mem == 0)
+ 	    {
+ 	      interp->result = "out of memory";
+--- a/tclhfs.c
++++ b/tclhfs.c
+@@ -902,7 +902,7 @@ int vol_cmd(ClientData clientData, Tcl_Interp *interp,
+ 	    }
+ 
+ 	  result = Tcl_Merge(listc, listv);
+-	  free(listv);
++	  Tcl_Free((char *)listv);
+ 
+ 	  Tcl_SetResult(interp, result, TCL_DYNAMIC);
+ 	}
+@@ -1038,7 +1038,7 @@ int vol_cmd(ClientData clientData, Tcl_Interp *interp,
+ 	    return TCL_ERROR;
+ 
+ 	  fargv = hfs_glob(vol, listc, listv, &fargc);
+-	  free(listv);
++	  Tcl_Free((char*)listv);
+ 
+ 	  if (fargv == 0)
+ 	    {

sys-fs/hfsutils/hfsutils-3.2.6_p14.ebuild

@@ -32,6 +32,7 @@ REQUIRED_USE="tk? ( tcl )"
 PATCHES=(
 	"${FILESDIR}"/largerthan2gb.patch
 	"${FILESDIR}"/${P/_p*}-fix-tcl-8.6.patch
+	"${FILESDIR}"/${PN}-3.2.6-test-tcl-8.6.patch
 )
 S=${WORKDIR}/${P/_p*}
 
@@ -57,6 +58,11 @@ src_compile() {
 	emake CC="$(tc-getCC)" -C hfsck
 }
 
+src_test() {
+	# Tests reuse the same image name. Let's serialize.
+	emake check -j1
+}
+
 src_install() {
 	dodir /usr/bin /usr/lib /usr/share/man/man1
 	emake \