Thanks -- fixed in R-devel and R_patched.

luke

On Sun, 3 Mar 2013, Martin Morgan wrote:

The Bioconductor build for a package DirichletMultinomial on

R Under development (unstable) (2013-02-26 r62077) -- "Unsuffered Consequences"

at


http://bioconductor.org/checkResults/devel/bioc-LATEST/DirichletMultinomial/george2-buildsrc.html

shows

* creating vignettes ... ERROR
...

Error: processing vignette ‘DirichletMultinomial.Rnw’ failed with diagnostics:
chunk 21 (label = ROC-dmngroup)
Error in mapply(FUN = f, ..., SIMPLIFY = FALSE) :
 invalid primitive operation given for dispatch
Execution halted

I have not been able to reproduce this on other systems, but the basic approach to a simpler reproducible example is to install the DirichletMultinomial Bioconductor package and then

tools::buildVignettes(dir="DirichletMultinomial")

where the 'dir' argument points to the uncompressed tarball. There is C code in the package, but not reached by this code chunk. Attempts to simplify the code generally results in the error disappearing.

R -d valgrind -e "tools::buildVignettes(dir="DirichletMultinomial")"

does not reveal anything. The error does not occur with gctorture(TRUE); tools::buildVignettes(dir="DirichletMultinomial").



By setting a breakpoint at Rf_error and creating a back-trace

(gdb) bt
#0  Rf_error (
   format=0x7ffff7a7cef8 "invalid primitive operation given for dispatch")
   at /home/biocbuild/src/R-3.0.r62077/src/main/errors.c:741
#1  0x00007ffff793a7ed in R_possible_dispatch (call=0x164d5c0, op=0x4d772a0,
   args=0x53325d0, rho=0x5334428, promisedArgs=TRUE)
   at /home/biocbuild/src/R-3.0.r62077/src/main/objects.c:1414
#2  0x00007ffff7908463 in Rf_DispatchOrEval (call=0x164d5c0, op=0x4d772a0,
   generic=0x7ffff7a8b0ef "length", args=0x53325d0, rho=0x5334428,
   ans=0x7ffffffe45a0, dropmissing=0, argsevald=1)
   at /home/biocbuild/src/R-3.0.r62077/src/main/eval.c:2413
#3  0x00007ffff792c318 in do_mapply (call=0x164d5c0, op=<optimized out>,
   args=<optimized out>, rho=0x5334428)
   at /home/biocbuild/src/R-3.0.r62077/src/main/mapply.c:49
...

we get to

(gdb) l mapply.c:49
44 /* Cache the .Primitive: unclear caching is worthwhile. */
45                  static SEXP length_op = NULL;
46                  if (length_op == NULL) length_op = R_Primitive("length");
47                  // DispatchOrEval() needs 'args' to be a pairlist
48                  SEXP ans, tmp2 = PROTECT(list1(tmp1));
49 if (DispatchOrEval(call, length_op, "length", tmp2, rho, &ans, 0, 1))
50                      lengths[i] = (R_xlen_t) (TYPEOF(ans) == REALSXP ?
51 REAL(ans)[0] : asInteger(ans));
52                  UNPROTECT(1);
53              }

and it seems like length_op is somehow incorrect. Starting again with a breakpoint at mapply.c:46, and watching the memory location of length_op, once assigned, for a write at the address of length_op

(gdb) b mapply.c:46
(gdb) r
...
(gdb) p length_op
$11 = (SEXP) 0x4d772a0
(gdb) watch *0x4d772a0
(gdb) c

leads to

(gdb) c
Continuing.
Hardware watchpoint 4: *0x4d772a0

Old value = 8
New value = 0
Rf_allocSExp (t=<optimized out>)
   at /home/biocbuild/src/R-3.0.r62077/src/main/memory.c:2056
2056        TYPEOF(s) = t;

which is R writing a new SEXP to the length_op location, as though this location had been garbage collected.

Asking for R_Primitive("length") in mapply.c gets us to dstruct.c:60, where we end up at

   if (result == R_NilValue) {
        result = allocSExp(type);
        SET_PRIMOFFSET(result, offset);
   }
...
   return result;

which looks like the allocated SEXP is not added to the PrimCache vector, and hence available for garbage collection. Perhaps a patch is along the lines of

Index: dstruct.c
===================================================================
--- dstruct.c   (revision 62113)
+++ dstruct.c   (working copy)
@@ -59,6 +59,7 @@
    if (result == R_NilValue) {
        result = allocSExp(type);
        SET_PRIMOFFSET(result, offset);
+       SET_VECTOR_ELT(PrimCache, offset, result);
    }
    else if (TYPEOF(result) != type)
error("requested primitive type is not consistent with cached value");


Martin


--
Luke Tierney
Chair, Statistics and Actuarial Science
Ralph E. Wareham Professor of Mathematical Sciences
University of Iowa                  Phone:             319-335-3386
Department of Statistics and        Fax:               319-335-3017
   Actuarial Science
241 Schaeffer Hall                  email:   luke-tier...@uiowa.edu
Iowa City, IA 52242                 WWW:  http://www.stat.uiowa.edu
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