R Under development (unstable) (2026-07-04 r90207) -- "Unsuffered Consequences"
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> if (.Platform$OS.type != "windows") withAutoprint({
+     library(lme4)
+ 
+     fm1 <- lmer(Reaction ~ Days + (Days|Subject), sleepstudy)
+ 
+     ## slightly weird model but plausible --- not that
+     ##   one would want to try drop1() on this model ...
+     fm2 <- lmer(Reaction ~ 1+ (Days|Subject), sleepstudy)
+     drop1(fm2)  ## empty
+     update(fm1, . ~ . - Days)
+     anova(fm2) ## empty
+ 
+     terms(fm1)
+     terms(fm1,fixed.only=FALSE)
+ 
+     extractAIC(fm1)
+ 
+     drop1(fm1)
+     drop1(fm1, test="Chisq")
+ 
+     gm1 <- glmer(cbind(incidence, size - incidence) ~ period + (1 | herd),
+                  family = binomial, data = cbpp, nAGQ=25L)
+ 
+     drop1(gm1, test="Chisq")
+ 
+ }) ## skip on windows (for speed)
> library(lme4)
Loading required package: Matrix
> fm1 <- lmer(Reaction ~ Days + (Days | Subject), sleepstudy)
> fm2 <- lmer(Reaction ~ 1 + (Days | Subject), sleepstudy)
> drop1(fm2)
Single term deletions

Model:
Reaction ~ 1 + (Days | Subject)
  npar    AIC
1      1785.5
> update(fm1, . ~ . - Days)
Linear mixed model fit by REML ['lmerMod']
Formula: Reaction ~ (Days | Subject)
   Data: sleepstudy
REML criterion at convergence: 1769.845
Random effects:
 Groups   Name        Std.Dev. Corr  
 Subject  (Intercept) 25.53          
          Days        11.93    -0.18 
 Residual             25.59          
Number of obs: 180, groups:  Subject, 18
Fixed Effects:
(Intercept)  
      257.8  
> anova(fm2)
Analysis of Variance Table
     npar Sum Sq Mean Sq F value
> terms(fm1)
Reaction ~ Days
attr(,"variables")
list(Reaction, Days)
attr(,"factors")
         Days
Reaction    0
Days        1
attr(,"term.labels")
[1] "Days"
attr(,"order")
[1] 1
attr(,"intercept")
[1] 1
attr(,"response")
[1] 1
attr(,".Environment")
<environment: R_GlobalEnv>
attr(,"predvars")
list(Reaction, Days)
> terms(fm1, fixed.only = FALSE)
Reaction ~ Days + (Days + Subject)
attr(,"variables")
list(Reaction, Days, Subject)
attr(,"factors")
         Days Subject
Reaction    0       0
Days        1       0
Subject     0       1
attr(,"term.labels")
[1] "Days"    "Subject"
attr(,"order")
[1] 1 1
attr(,"intercept")
[1] 1
attr(,"response")
[1] 1
attr(,".Environment")
<environment: R_GlobalEnv>
attr(,"predvars")
list(Reaction, Days, Subject)
attr(,"dataClasses")
 Reaction      Days   Subject 
"numeric" "numeric"  "factor" 
attr(,"predvars.fixed")
list(Reaction, Days)
attr(,"varnames.fixed")
[1] "Reaction" "Days"    
attr(,"predvars.random")
list(Reaction, Days, Subject)
> extractAIC(fm1)
[1]    6.000 1763.939
> drop1(fm1)
Single term deletions

Model:
Reaction ~ Days + (Days | Subject)
       npar    AIC
<none>      1763.9
Days      1 1785.5
> drop1(fm1, test = "Chisq")
Single term deletions

Model:
Reaction ~ Days + (Days | Subject)
       npar    AIC    LRT   Pr(Chi)    
<none>      1763.9                     
Days      1 1785.5 23.537 1.226e-06 ***
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
> gm1 <- glmer(cbind(incidence, size - incidence) ~ period + (1 | herd), 
+     family = binomial, data = cbpp, nAGQ = 25L)
=================================================================
==3869517==ERROR: AddressSanitizer: heap-use-after-free on address 0x7cfffbbaf8b0 at pc 0x7b3fe51d0d9d bp 0x7fff9c42c790 sp 0x7fff9c42c788
READ of size 8 at 0x7cfffbbaf8b0 thread T0
    #0 0x7b3fe51d0d9c in Eigen::internal::product_evaluator<Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1>, 8, Eigen::DiagonalShape, Eigen::DenseShape, double, double>::coeff(long, long) const /data/gannet/ripley/R/test-dev/RcppEigen/include/Eigen/src/Core/ProductEvaluators.h:925
    #1 0x7b3fe51d0d9c in Eigen::internal::generic_dense_assignment_kernel<Eigen::internal::evaluator<Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> > >, Eigen::internal::evaluator<Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1> >, Eigen::internal::assign_op<double, double>, 0>::assignCoeff(long, long) /data/gannet/ripley/R/test-dev/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:654
    #2 0x7b3fe51d0d9c in Eigen::internal::generic_dense_assignment_kernel<Eigen::internal::evaluator<Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> > >, Eigen::internal::evaluator<Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1> >, Eigen::internal::assign_op<double, double>, 0>::assignCoeffByOuterInner(long, long) /data/gannet/ripley/R/test-dev/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:668
    #3 0x7b3fe51d0d9c in Eigen::internal::dense_assignment_loop<Eigen::internal::generic_dense_assignment_kernel<Eigen::internal::evaluator<Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> > >, Eigen::internal::evaluator<Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1> >, Eigen::internal::assign_op<double, double>, 0>, 0, 0>::run(Eigen::internal::generic_dense_assignment_kernel<Eigen::internal::evaluator<Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> > >, Eigen::internal::evaluator<Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1> >, Eigen::internal::assign_op<double, double>, 0>&) /data/gannet/ripley/R/test-dev/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:347
    #4 0x7b3fe51d0d9c in void Eigen::internal::call_dense_assignment_loop<Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1>, Eigen::internal::assign_op<double, double> >(Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >&, Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1> const&, Eigen::internal::assign_op<double, double> const&) /data/gannet/ripley/R/test-dev/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:785
    #5 0x7b3fe51d0d9c in Eigen::internal::Assignment<Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1>, Eigen::internal::assign_op<double, double>, Eigen::internal::Dense2Dense, void>::run(Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >&, Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1> const&, Eigen::internal::assign_op<double, double> const&) /data/gannet/ripley/R/test-dev/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:954
    #6 0x7b3fe51d0d9c in void Eigen::internal::call_assignment_no_alias<Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1>, Eigen::internal::assign_op<double, double> >(Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >&, Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1> const&, Eigen::internal::assign_op<double, double> const&) /data/gannet/ripley/R/test-dev/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:890
    #7 0x7b3fe51d0d9c in void Eigen::internal::call_assignment<Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1>, Eigen::internal::assign_op<double, double> >(Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >&, Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1> const&, Eigen::internal::assign_op<double, double> const&, Eigen::internal::enable_if<!Eigen::internal::evaluator_assume_aliasing<Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1>, Eigen::internal::evaluator_traits<Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1> >::Shape>::value, void*>::type) /data/gannet/ripley/R/test-dev/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:858
    #8 0x7b3fe51d0d9c in void Eigen::internal::call_assignment<Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1> >(Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >&, Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1> const&) /data/gannet/ripley/R/test-dev/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:836
    #9 0x7b3fe51d0d9c in Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >& Eigen::MatrixBase<Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> > >::operator=<Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1> >(Eigen::DenseBase<Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1> > const&) /data/gannet/ripley/R/test-dev/RcppEigen/include/Eigen/src/Core/Assign.h:66
    #10 0x7b3fe51d0d9c in lme4::merPredD::updateXwts(Eigen::Array<double, -1, 1, 0, -1, 1> const&) /data/gannet/ripley/R/packages/tests-gcc-SAN/lme4/src/predModule.cpp:221
    #11 0x7b3fe5046416 in internal_glmerWrkIter /data/gannet/ripley/R/packages/tests-gcc-SAN/lme4/src/external.cpp:274
    #12 0x7b3fe5046416 in pwrssUpdate /data/gannet/ripley/R/packages/tests-gcc-SAN/lme4/src/external.cpp:330
    #13 0x7b3fe5060c03 in glmerAGQ /data/gannet/ripley/R/packages/tests-gcc-SAN/lme4/src/external.cpp:428
    #14 0x00000074ffa0 in R_doDotCall /data/gannet/ripley/R/svn/R-devel/src/main/dotcode.c:775
    #15 0x0000008ed70a in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8700
    #16 0x0000008c3f63 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533
    #17 0x0000008629ea in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167
    #18 0x00000087ad2a in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398
    #19 0x00000087ecdd in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314
    #20 0x000000863098 in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333
    #21 0x000000863098 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1278
    #22 0x000000894a2e in do_set /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3585
    #23 0x0000008634c6 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230
    #24 0x00000087729b in do_begin /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3001
    #25 0x0000008634c6 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230
    #26 0x00000087ad2a in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398
    #27 0x00000087ecdd in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314
    #28 0x00000088038b in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333
    #29 0x0000008eb805 in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8121
    #30 0x0000008c3f63 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533
    #31 0x0000008629ea in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167
    #32 0x000000930ad1 in forcePromise.part.0.lto_priv.0 /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:976
    #33 0x00000086405c in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1185
    #34 0x0000008952f4 in Rf_evalList /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3683
    #35 0x00000086388c in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1249
    #36 0x000000894a2e in do_set /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3585
    #37 0x0000008634c6 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230
    #38 0x0000008952f4 in Rf_evalList /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3683
    #39 0x00000086388c in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1249
    #40 0x0000008952f4 in Rf_evalList /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3683
    #41 0x00000086388c in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1249
    #42 0x000000930ad1 in forcePromise.part.0.lto_priv.0 /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:976
    #43 0x000000863f37 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1191
    #44 0x0000008d6d02 in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8150
    #45 0x0000008c3f63 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533
    #46 0x0000008629ea in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167
    #47 0x00000087ad2a in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398
    #48 0x00000087ecdd in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314
    #49 0x000000863098 in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333
    #50 0x000000863098 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1278
    #51 0x00000087729b in do_begin /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3001
    #52 0x0000008634c6 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230
    #53 0x00000087ad2a in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398
    #54 0x00000087ecdd in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314
    #55 0x00000088038b in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333
    #56 0x0000008eb805 in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8121
    #57 0x0000008c3f63 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533
    #58 0x0000008629ea in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167
    #59 0x00000087ad2a in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398
    #60 0x00000087ecdd in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314
    #61 0x000000863098 in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333
    #62 0x000000863098 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1278
    #63 0x0000006237b5 in do_docall /data/gannet/ripley/R/svn/R-devel/src/main/coerce.c:2788
    #64 0x0000008d6d02 in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8150
    #65 0x0000008c3f63 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533
    #66 0x0000008629ea in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167
    #67 0x00000087ad2a in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398
    #68 0x00000087ecdd in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314
    #69 0x000000863098 in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333
    #70 0x000000863098 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1278
    #71 0x000000894a2e in do_set /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3585
    #72 0x0000008634c6 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230
    #73 0x00000089d693 in do_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3993
    #74 0x0000008d6d02 in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8150
    #75 0x0000008c3f63 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533
    #76 0x0000008629ea in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167
    #77 0x000000930ad1 in forcePromise.part.0.lto_priv.0 /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:976
    #78 0x00000086405c in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1185
    #79 0x00000089f4c3 in do_withVisible /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:4018
    #80 0x000000a9e436 in do_internal /data/gannet/ripley/R/svn/R-devel/src/main/names.c:1424
    #81 0x0000008e3f11 in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8170
    #82 0x0000008c3f63 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533
    #83 0x0000008629ea in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167
    #84 0x00000087ad2a in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398
    #85 0x00000087ecdd in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314
    #86 0x000000863098 in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333
    #87 0x000000863098 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1278
    #88 0x0000008634c6 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230
    #89 0x000000a0b688 in Rf_ReplIteration /data/gannet/ripley/R/svn/R-devel/src/main/main.c:264
    #90 0x000000a0b688 in R_ReplConsole /data/gannet/ripley/R/svn/R-devel/src/main/main.c:317
    #91 0x000000a1a97a in run_Rmainloop /data/gannet/ripley/R/svn/R-devel/src/main/main.c:1235
    #92 0x000000a1aa12 in Rf_mainloop /data/gannet/ripley/R/svn/R-devel/src/main/main.c:1242
    #93 0x00000041306f in main /data/gannet/ripley/R/svn/R-devel/src/main/Rmain.c:29
    #94 0x7f3fff012574 in __libc_start_call_main (/lib64/libc.so.6+0x3574) (BuildId: 92b5376d35bb29c098175948cf3e7cbcae3aeae1)
    #95 0x7f3fff012627 in __libc_start_main@GLIBC_2.2.5 (/lib64/libc.so.6+0x3627) (BuildId: 92b5376d35bb29c098175948cf3e7cbcae3aeae1)
    #96 0x000000413a14 in _start (/data/gannet/ripley/R/gcc-SAN3/bin/exec/R+0x413a14) (BuildId: f060bf4ee83b802127121439cefaeb137652c0ab)

0x7cfffbbaf8b0 is located 48 bytes inside of 1840-byte region [0x7cfffbbaf880,0x7cfffbbaffb0)
freed by thread T0 here:
    #0 0x7f40006e5beb in free.part.0 (/lib64/libasan.so.8+0xe5beb) (BuildId: d3cb6206dff19da52969c009f4cd93611901c478)
    #1 0x000000a1bf9f in ReleaseLargeFreeVectors /data/gannet/ripley/R/svn/R-devel/src/main/memory.c:1167
    #2 0x000000a49e0d in RunGenCollect /data/gannet/ripley/R/svn/R-devel/src/main/memory.c:1951
    #3 0x000000a7244d in R_gc_internal /data/gannet/ripley/R/svn/R-devel/src/main/memory.c:3237
    #4 0x000000a872bb in CONS_NR /data/gannet/ripley/R/svn/R-devel/src/main/memory.c:2519
    #5 0x0000008e18ea in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8059
    #6 0x0000008c3f63 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533
    #7 0x0000008629ea in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167
    #8 0x00000087ad2a in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398
    #9 0x00000087ecdd in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314
    #10 0x000000863098 in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333
    #11 0x000000863098 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1278
    #12 0x0000008634c6 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230
    #13 0x00000087729b in do_begin /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3001
    #14 0x0000008634c6 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230
    #15 0x00000087ad2a in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398
    #16 0x000000882ecd in R_execMethod /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2567
    #17 0x7f3ffbd4ee3a in R_dispatchGeneric /data/gannet/ripley/R/svn/R-devel/src/library/methods/src/methods_list_dispatch.c:1154
    #18 0x000000ab5d56 in do_standardGeneric /data/gannet/ripley/R/svn/R-devel/src/main/objects.c:1348
    #19 0x0000008f0311 in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8085
    #20 0x0000008c3f63 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533
    #21 0x0000008629ea in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167
    #22 0x00000087ad2a in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398
    #23 0x00000087ecdd in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314
    #24 0x000000ab91dc in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333
    #25 0x000000ab91dc in R_possible_dispatch /data/gannet/ripley/R/svn/R-devel/src/main/objects.c:1687
    #26 0x000000899880 in Rf_DispatchOrEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:4191
    #27 0x000000d0bd6b in R_DispatchOrEvalSP /data/gannet/ripley/R/svn/R-devel/src/main/subassign.c:1564
    #28 0x000000d6ba7f in do_subset3 /data/gannet/ripley/R/svn/R-devel/src/main/subset.c:1264
    #29 0x0000008634c6 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230
    #30 0x0000008952f4 in Rf_evalList /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3683
    #31 0x00000086388c in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1249

previously allocated by thread T0 here:
    #0 0x7f40006e6f2b in malloc (/lib64/libasan.so.8+0xe6f2b) (BuildId: d3cb6206dff19da52969c009f4cd93611901c478)
    #1 0x000000a7a3e0 in Rf_allocVector3 /data/gannet/ripley/R/svn/R-devel/src/main/memory.c:2894
    #2 0x0000005077b3 in Rf_allocVector /data/gannet/ripley/R/svn/R-devel/src/include/Rinlinedfuns.h:609
    #3 0x0000005077b3 in Rf_allocMatrix /data/gannet/ripley/R/svn/R-devel/src/main/array.c:236
    #4 0x7b3fed94b36e in modelmatrix /data/gannet/ripley/R/svn/R-devel/src/library/stats/src/model.c:676
    #5 0x00000073b52a in do_External /data/gannet/ripley/R/svn/R-devel/src/main/dotcode.c:573
    #6 0x0000008d6d02 in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8150
    #7 0x0000008c3f63 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533
    #8 0x0000008629ea in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167
    #9 0x00000087ad2a in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398
    #10 0x00000087ecdd in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314
    #11 0x000000a9f646 in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333
    #12 0x000000a9f646 in applyMethod /data/gannet/ripley/R/svn/R-devel/src/main/objects.c:120
    #13 0x000000aa3480 in dispatchMethod /data/gannet/ripley/R/svn/R-devel/src/main/objects.c:473
    #14 0x000000aa56c0 in Rf_usemethod.isra.0 /data/gannet/ripley/R/svn/R-devel/src/main/objects.c:523
    #15 0x000000aa6026 in do_usemethod /data/gannet/ripley/R/svn/R-devel/src/main/objects.c:579
    #16 0x0000008e3f11 in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8170
    #17 0x0000008c3f63 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533
    #18 0x0000008629ea in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167
    #19 0x00000087ad2a in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398
    #20 0x00000087ecdd in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314
    #21 0x000000863098 in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333
    #22 0x000000863098 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1278
    #23 0x00000089c5a1 in do_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3975
    #24 0x0000008d6d02 in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8150
    #25 0x0000008c3f63 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533
    #26 0x0000008629ea in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167
    #27 0x00000087ad2a in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398
    #28 0x00000087ecdd in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314
    #29 0x000000863098 in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333
    #30 0x000000863098 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1278
    #31 0x000000894a2e in do_set /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3585
    #32 0x0000008634c6 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230
    #33 0x00000089d693 in do_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3993

SUMMARY: AddressSanitizer: heap-use-after-free /data/gannet/ripley/R/test-dev/RcppEigen/include/Eigen/src/Core/ProductEvaluators.h:925 in Eigen::internal::product_evaluator<Eigen::Product<Eigen::DiagonalWrapper<Eigen::Map<Eigen::Matrix<double, -1, 1, 0, -1, 1>, 0, Eigen::Stride<0, 0> > const>, Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0> >, 1>, 8, Eigen::DiagonalShape, Eigen::DenseShape, double, double>::coeff(long, long) const
Shadow bytes around the buggy address:
  0x7cfffbbaf600: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x7cfffbbaf680: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x7cfffbbaf700: fd fd fd fd fd fd fd fd fd fd fd fa fa fa fa fa
  0x7cfffbbaf780: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x7cfffbbaf800: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x7cfffbbaf880: fd fd fd fd fd fd[fd]fd fd fd fd fd fd fd fd fd
  0x7cfffbbaf900: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x7cfffbbaf980: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x7cfffbbafa00: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x7cfffbbafa80: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x7cfffbbafb00: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==3869517==ABORTING