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)
=================================================================
==509316==ERROR: AddressSanitizer: heap-use-after-free on address 0x7d97c07af8b0 at pc 0x7bd7ac5fb93c bp 0x7ffc740342d0 sp 0x7ffc740342c8
READ of size 16 at 0x7d97c07af8b0 thread T0
    #0 0x7bd7ac5fb93b 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-clang/RcppEigen/include/Eigen/src/Core/ProductEvaluators.h:925:46
    #1 0x7bd7ac5fb93b 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-clang/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:654:58
    #2 0x7bd7ac5fb93b 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-clang/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:668:5
    #3 0x7bd7ac5fb93b 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-clang/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:347:16
    #4 0x7bd7ac5fb93b 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-clang/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:785:3
    #5 0x7bd7ac5fb93b 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-clang/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:954:5
    #6 0x7bd7ac5fb93b 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-clang/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:890:3
    #7 0x7bd7ac5fb93b 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<!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>>::value, void*>::type) /data/gannet/ripley/R/test-clang/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:858:3
    #8 0x7bd7ac5fb93b 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-clang/RcppEigen/include/Eigen/src/Core/AssignEvaluator.h:836:3
    #9 0x7bd7ac5fb93b 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-clang/RcppEigen/include/Eigen/src/Core/Assign.h:66:3
    #10 0x7bd7ac5fb93b in Eigen::Map<Eigen::Matrix<double, -1, -1, 0, -1, -1>, 0, Eigen::Stride<0, 0>>& 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-clang/RcppEigen/include/Eigen/src/Core/Map.h:162:5
    #11 0x7bd7ac5fb93b in lme4::merPredD::updateXwts(Eigen::Array<double, -1, 1, 0, -1, 1> const&) /data/gannet/ripley/R/packages/tests-clang-ASAN/lme4/src/predModule.cpp:221:30
    #12 0x7bd7ac589cd2 in internal_glmerWrkIter(lme4::merPredD*, lme4::glmResp*, bool) /data/gannet/ripley/R/packages/tests-clang-ASAN/lme4/src/external.cpp:274:13
    #13 0x7bd7ac589cd2 in pwrssUpdate(lme4::glmResp*, lme4::merPredD*, bool, double, int, int) /data/gannet/ripley/R/packages/tests-clang-ASAN/lme4/src/external.cpp:330:20
    #14 0x7bd7ac58c47e in glmerAGQ /data/gannet/ripley/R/packages/tests-clang-ASAN/lme4/src/external.cpp:428:9
    #15 0x55ef29553f2e in R_doDotCall /data/gannet/ripley/R/svn/R-devel/src/main/dotcode.c
    #16 0x55ef29617d2d in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8700:21
    #17 0x55ef295ffd74 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533:16
    #18 0x55ef295fe301 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167:8
    #19 0x55ef29646a9c in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398:39
    #20 0x55ef29645c58 in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314:16
    #21 0x55ef296013be in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333:16
    #22 0x55ef295fed28 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1278:12
    #23 0x55ef29657bc5 in do_set /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3585:8
    #24 0x55ef295fe840 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230:12
    #25 0x55ef29655269 in do_begin /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3001:10
    #26 0x55ef295fe840 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230:12
    #27 0x55ef29646a9c in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398:39
    #28 0x55ef29645c58 in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314:16
    #29 0x55ef2961feba in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333:16
    #30 0x55ef2961feba in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8121:16
    #31 0x55ef295ffd74 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533:16
    #32 0x55ef295fe301 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167:8
    #33 0x55ef2960060a in forcePromise /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:976:13
    #34 0x55ef295fe4f5 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1185:6
    #35 0x55ef296009a2 in Rf_evalList /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3683:12
    #36 0x55ef295fe9d1 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1249:20
    #37 0x55ef29657bc5 in do_set /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3585:8
    #38 0x55ef295fe840 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230:12
    #39 0x55ef296009a2 in Rf_evalList /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3683:12
    #40 0x55ef295fe9d1 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1249:20
    #41 0x55ef296009a2 in Rf_evalList /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3683:12
    #42 0x55ef295fe9d1 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1249:20
    #43 0x55ef2960060a in forcePromise /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:976:13
    #44 0x55ef295fe2b7 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1191:2
    #45 0x55ef2960c77a in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8150:14
    #46 0x55ef295ffd74 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533:16
    #47 0x55ef295fe301 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167:8
    #48 0x55ef29646a9c in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398:39
    #49 0x55ef29645c58 in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314:16
    #50 0x55ef296013be in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333:16
    #51 0x55ef295fed28 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1278:12
    #52 0x55ef29655269 in do_begin /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3001:10
    #53 0x55ef295fe840 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230:12
    #54 0x55ef29646a9c in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398:39
    #55 0x55ef29645c58 in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314:16
    #56 0x55ef2961feba in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333:16
    #57 0x55ef2961feba in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8121:16
    #58 0x55ef295ffd74 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533:16
    #59 0x55ef295fe301 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167:8
    #60 0x55ef29646a9c in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398:39
    #61 0x55ef29645c58 in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314:16
    #62 0x55ef296013be in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333:16
    #63 0x55ef295fed28 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1278:12
    #64 0x55ef294b4abc in do_docall /data/gannet/ripley/R/svn/R-devel/src/main/coerce.c:2788:12
    #65 0x55ef2960c77a in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8150:14
    #66 0x55ef295ffd74 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533:16
    #67 0x55ef295fe301 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167:8
    #68 0x55ef29646a9c in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398:39
    #69 0x55ef29645c58 in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314:16
    #70 0x55ef296013be in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333:16
    #71 0x55ef295fed28 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1278:12
    #72 0x55ef29657bc5 in do_set /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3585:8
    #73 0x55ef295fe840 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230:12
    #74 0x55ef2965cfba in do_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3993:9
    #75 0x55ef2960c77a in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8150:14
    #76 0x55ef295ffd74 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533:16
    #77 0x55ef295fe301 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167:8
    #78 0x55ef2960060a in forcePromise /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:976:13
    #79 0x55ef295fe4f5 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1185:6
    #80 0x55ef2965d883 in do_withVisible /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:4018:9
    #81 0x55ef297064b9 in do_internal /data/gannet/ripley/R/svn/R-devel/src/main/names.c:1424:11
    #82 0x55ef29611f93 in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8170:15
    #83 0x55ef295ffd74 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533:16
    #84 0x55ef295fe301 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167:8
    #85 0x55ef29646a9c in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398:39
    #86 0x55ef29645c58 in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314:16
    #87 0x55ef296013be in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333:16
    #88 0x55ef295fed28 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1278:12
    #89 0x55ef295fe840 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230:12
    #90 0x55ef296cfbe1 in Rf_ReplIteration /data/gannet/ripley/R/svn/R-devel/src/main/main.c:264:23
    #91 0x55ef296d2410 in R_ReplConsole /data/gannet/ripley/R/svn/R-devel/src/main/main.c:317:11
    #92 0x55ef296d2410 in run_Rmainloop /data/gannet/ripley/R/svn/R-devel/src/main/main.c:1235:5
    #93 0x55ef296d24a2 in Rf_mainloop /data/gannet/ripley/R/svn/R-devel/src/main/main.c:1242:5
    #94 0x55ef293d3d3c in main /data/gannet/ripley/R/svn/R-devel/src/main/Rmain.c:29:5
    #95 0x7fd7c3c12574 in __libc_start_call_main (/lib64/libc.so.6+0x3574) (BuildId: 92b5376d35bb29c098175948cf3e7cbcae3aeae1)
    #96 0x7fd7c3c12627 in __libc_start_main@GLIBC_2.2.5 (/lib64/libc.so.6+0x3627) (BuildId: 92b5376d35bb29c098175948cf3e7cbcae3aeae1)
    #97 0x55ef292eb7d4 in _start (/data/gannet/ripley/R/clang-ASAN/bin/exec/R+0x17d4)

0x7d97c07af8b0 is located 48 bytes inside of 1840-byte region [0x7d97c07af880,0x7d97c07affb0)
freed by thread T0 here:
    #0 0x55ef29390916 in free /home/runner/work/llvm-project/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:51:3
    #1 0x55ef296ed31b in ReleaseLargeFreeVectors /data/gannet/ripley/R/svn/R-devel/src/main/memory.c:1167:7
    #2 0x55ef296ed31b in RunGenCollect /data/gannet/ripley/R/svn/R-devel/src/main/memory.c:1951:5
    #3 0x55ef296e018b in R_gc_internal /data/gannet/ripley/R/svn/R-devel/src/main/memory.c:3237:19
    #4 0x55ef296dd195 in Rf_cons /data/gannet/ripley/R/svn/R-devel/src/main/memory.c:2488:2
    #5 0x55ef2983292f in R_DispatchOrEvalSP /data/gannet/ripley/R/svn/R-devel/src/main/subset.c:667:9
    #6 0x55ef2983fb2f in do_subset3 /data/gannet/ripley/R/svn/R-devel/src/main/subset.c:1264:8
    #7 0x55ef295fe840 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230:12
    #8 0x55ef295fe541 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1219:19
    #9 0x55ef29655269 in do_begin /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3001:10
    #10 0x55ef295fe840 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230:12
    #11 0x55ef29646a9c in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398:39
    #12 0x55ef29645c58 in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314:16
    #13 0x55ef2961feba in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333:16
    #14 0x55ef2961feba in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8121:16
    #15 0x55ef295ffd74 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533:16
    #16 0x55ef295fe301 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167:8
    #17 0x55ef2960060a in forcePromise /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:976:13
    #18 0x55ef295fe4f5 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1185:6
    #19 0x55ef296009a2 in Rf_evalList /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3683:12
    #20 0x55ef295fe9d1 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1249:20
    #21 0x55ef29657bc5 in do_set /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3585:8
    #22 0x55ef295fe840 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1230:12
    #23 0x55ef296009a2 in Rf_evalList /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3683:12
    #24 0x55ef295fe9d1 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1249:20
    #25 0x55ef296009a2 in Rf_evalList /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3683:12
    #26 0x55ef295fe9d1 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1249:20
    #27 0x55ef2960060a in forcePromise /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:976:13
    #28 0x55ef295fe2b7 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1191:2
    #29 0x55ef2960c77a in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8150:14
    #30 0x55ef295ffd74 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533:16
    #31 0x55ef295fe301 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167:8

previously allocated by thread T0 here:
    #0 0x55ef29390bb4 in malloc /home/runner/work/llvm-project/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:67:3
    #1 0x55ef296dac7c in Rf_allocVector3 /data/gannet/ripley/R/svn/R-devel/src/main/memory.c:2894:7
    #2 0x55ef2943332b in Rf_allocVector /data/gannet/ripley/R/svn/R-devel/src/include/Rinlinedfuns.h:609:12
    #3 0x55ef2943332b in Rf_allocMatrix /data/gannet/ripley/R/svn/R-devel/src/main/array.c:236:17
    #4 0x7bd7b30d80ce in modelmatrix /data/gannet/ripley/R/svn/R-devel/src/library/stats/src/model.c:676:17
    #5 0x55ef29548365 in do_External /data/gannet/ripley/R/svn/R-devel/src/main/dotcode.c:573:11
    #6 0x55ef2960c77a in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8150:14
    #7 0x55ef295ffd74 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533:16
    #8 0x55ef295fe301 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167:8
    #9 0x55ef29646a9c in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398:39
    #10 0x55ef29645c58 in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314:16
    #11 0x55ef296013be in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333:16
    #12 0x55ef2970ce14 in dispatchMethod /data/gannet/ripley/R/svn/R-devel/src/main/objects.c:473:16
    #13 0x55ef2970ba98 in Rf_usemethod /data/gannet/ripley/R/svn/R-devel/src/main/objects.c:523:9
    #14 0x55ef2970e073 in do_usemethod /data/gannet/ripley/R/svn/R-devel/src/main/objects.c:579:9
    #15 0x55ef29611f93 in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8170:15
    #16 0x55ef295ffd74 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533:16
    #17 0x55ef295fe301 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167:8
    #18 0x55ef29646a9c in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398:39
    #19 0x55ef29645c58 in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314:16
    #20 0x55ef296013be in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333:16
    #21 0x55ef295fed28 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1278:12
    #22 0x55ef2965c653 in do_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3975:13
    #23 0x55ef2960c77a in bcEval_loop /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:8150:14
    #24 0x55ef295ffd74 in bcEval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:7533:16
    #25 0x55ef295fe301 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1167:8
    #26 0x55ef29646a9c in R_execClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2398:39
    #27 0x55ef29645c58 in applyClosure_core /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2314:16
    #28 0x55ef296013be in Rf_applyClosure /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:2333:16
    #29 0x55ef295fed28 in Rf_eval /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:1278:12
    #30 0x55ef29657bc5 in do_set /data/gannet/ripley/R/svn/R-devel/src/main/eval.c:3585:8

SUMMARY: AddressSanitizer: heap-use-after-free /data/gannet/ripley/R/test-clang/RcppEigen/include/Eigen/src/Core/ProductEvaluators.h:925:46 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:
  0x7d97c07af600: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x7d97c07af680: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x7d97c07af700: fd fd fd fd fd fd fd fd fd fd fd fa fa fa fa fa
  0x7d97c07af780: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x7d97c07af800: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x7d97c07af880: fd fd fd fd fd fd[fd]fd fd fd fd fd fd fd fd fd
  0x7d97c07af900: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x7d97c07af980: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x7d97c07afa00: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x7d97c07afa80: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x7d97c07afb00: 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
==509316==ABORTING