Jay Foad
2012-Feb-21 10:51 UTC
[LLVMdev] buildbot failure in LLVM on clang-x86_64-debian-fnt
All,
This buildbot is getting lots of assertion failures in the test suite.
They were probably caused by my commit:
------------------------------------------------------------------------
r151049 | foad | 2012-02-21 09:25:52 +0000 (Tue, 21 Feb 2012) | 6 lines
Changed paths:
M /llvm/trunk/lib/VMCore/LLVMContextImpl.h
M /llvm/trunk/lib/VMCore/Type.cpp
PR1210: make uniquing of struct and function types more efficient by
using a DenseMap and Talin's new GeneralHash, avoiding the need for a
temporary std::vector on every lookup.
Patch by Meador Inge!
------------------------------------------------------------------------
... but I can't reproduce the failures on my machine. I'm also running
x86_64 Linux, I've checked out the same revision of
llvm+clang+testsuite as the buildbot, I'm doing a Release+Asserts
build.
Is anyone else seeing these failures? Any ideas how I can reproduce them here?
Thanks,
Jay.
Example failure from
http://lab.llvm.org:8011/builders/clang-x86_64-debian-fnt/builds/4877/steps/make.test-suite/logs/stdio
:
0 clang 0x0000000001e417ff
1 clang 0x0000000001e43a62
2 libpthread.so.0 0x00002aaaaacd9f60
3 libc.so.6 0x00002aaaab8cb165 gsignal + 53
4 libc.so.6 0x00002aaaab8cdf70 abort + 384
5 libc.so.6 0x00002aaaab8c42b1 __assert_fail + 241
6 clang 0x0000000001d799dc
llvm::Intrinsic::getDeclaration(llvm::Module*, llvm::Intrinsic::ID,
llvm::ArrayRef<llvm::Type*>) + 172
7 clang 0x0000000001da8476
llvm::IRBuilderBase::CreateMemCpy(llvm::Value*, llvm::Value*,
llvm::Value*, unsigned int, bool, llvm::MDNode*) + 278
8 clang 0x0000000000917059
clang::CodeGen::CodeGenFunction::EmitBuiltinExpr(clang::FunctionDecl
const*, unsigned int, clang::CallExpr const*) + 13001
9 clang 0x000000000085491c
clang::CodeGen::CodeGenFunction::EmitCallExpr(clang::CallExpr const*,
clang::CodeGen::ReturnValueSlot) + 236
10 clang 0x0000000000879146
11 clang 0x00000000008807ae
12 clang 0x0000000000882f40
clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*,
bool) + 96
13 clang 0x0000000000847a27
clang::CodeGen::CodeGenFunction::EmitAnyExpr(clang::Expr const*,
clang::CodeGen::AggValueSlot, bool) + 247
14 clang 0x00000000008e6948
clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*) + 712
15 clang 0x00000000008e9e40
clang::CodeGen::CodeGenFunction::EmitCompoundStmt(clang::CompoundStmt
const&, bool, clang::CodeGen::AggValueSlot) + 272
16 clang 0x00000000008ea0ff
clang::CodeGen::CodeGenFunction::EmitSimpleStmt(clang::Stmt const*) +
271
17 clang 0x00000000008e66a7
clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*) + 39
18 clang 0x00000000008e9c42
clang::CodeGen::CodeGenFunction::EmitIfStmt(clang::IfStmt const&) +
594
19 clang 0x00000000008e9e40
clang::CodeGen::CodeGenFunction::EmitCompoundStmt(clang::CompoundStmt
const&, bool, clang::CodeGen::AggValueSlot) + 272
20 clang 0x00000000008ea0ff
clang::CodeGen::CodeGenFunction::EmitSimpleStmt(clang::Stmt const*) +
271
21 clang 0x00000000008e66a7
clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*) + 39
22 clang 0x00000000008e71ef
clang::CodeGen::CodeGenFunction::EmitSwitchStmt(clang::SwitchStmt
const&) + 1247
23 clang 0x00000000008e9e40
clang::CodeGen::CodeGenFunction::EmitCompoundStmt(clang::CompoundStmt
const&, bool, clang::CodeGen::AggValueSlot) + 272
24 clang 0x00000000008ea0ff
clang::CodeGen::CodeGenFunction::EmitSimpleStmt(clang::Stmt const*) +
271
25 clang 0x00000000008e66a7
clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*) + 39
26 clang 0x00000000008f7193
clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl,
llvm::Function*, clang::CodeGen::CGFunctionInfo const&) + 995
27 clang 0x00000000007ca16b
clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl)
+ 587
28 clang 0x00000000007dbe0e
clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl)
+ 190
29 clang 0x00000000007dc3ed
clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl) + 1197
30 clang 0x00000000007dc82b
clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) + 491
31 clang 0x00000000007bc394
32 clang 0x00000000007bb611
33 clang 0x0000000000918525 clang::ParseAST(clang::Sema&, bool) +
309
34 clang 0x00000000007baa04 clang::CodeGenAction::ExecuteAction() + 68
35 clang 0x000000000065e701
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 321
36 clang 0x0000000000647289
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1609
37 clang 0x000000000063c268 cc1_main(char const**, char
const**, char const*, void*) + 920
38 clang 0x0000000000645f77 main + 7079
39 libc.so.6 0x00002aaaab8b7c4d __libc_start_main + 253
40 clang 0x0000000000639ad9
Stack dump:
0. Program arguments:
/home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/llvm.obj/Release+Asserts/bin/clang
-cc1 -triple x86_64-pc-linux-gnu -emit-llvm -disable-free
-main-file-name slib.c -mrelocation-model static -masm-verbose
-mconstructor-aliases -munwind-tables -target-cpu x86-64
-momit-leaf-frame-pointer -coverage-file Output/slib.ll -resource-dir
/home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/llvm.obj/Release+Asserts/bin/../lib/clang/3.1
-D __USE_MISC -D __USE_GNU -D __USE_SVID -D __USE_XOPEN_EXTENDED -D
__USE_XOPEN -D unix -D _GNU_SOURCE -D __STDC_LIMIT_MACROS -D NDEBUG -I
/home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.obj/MultiSource/Applications/siod
-I
/home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod
-I
/home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.obj/../test-suite.src/include
-I ../../../include -I
/home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/llvm.obj/include
-I /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/llvm.src/include
-fmodule-cache-path /var/tmp/clang-module-cache -internal-isystem
/usr/local/include -internal-isystem
/home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/llvm.obj/Release+Asserts/bin/../lib/clang/3.1/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem
/usr/include -O3 -fdebug-compilation-dir /bin/pwd -ferror-limit 19
-fmessage-length 0 -mstackrealign -fgnu-runtime -fobjc-runtime-has-arc
-fobjc-runtime-has-weak -fobjc-fragile-abi -fdiagnostics-show-option
-disable-llvm-optzns -o Output/slib.ll -x c
/home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod/slib.c
1.
/home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod/slib.c:1133:1:
current parser token 'LISP'
2.
/home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod/slib.c:1097:6:
LLVM IR generation of declaration 'gc_relocate'
3.
/home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod/slib.c:1097:6:
Generating code for declaration 'gc_relocate'
4.
/home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod/slib.c:1098:1:
LLVM IR generation of compound statement ('{}')
5.
/home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod/slib.c:1103:4:
LLVM IR generation of compound statement ('{}')
6.
/home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod/slib.c:1126:2:
LLVM IR generation of compound statement ('{}')
On 21 February 2012 09:45, <llvm.buildmaster at lab.llvm.org>
wrote:> The Buildbot has detected a new failure on builder clang-x86_64-debian-fnt
while building llvm.
> Full details are available at:
> http://lab.llvm.org:8011/builders/clang-x86_64-debian-fnt/builds/4877
>
> Buildbot URL: http://lab.llvm.org:8011/
>
> Buildslave for this Build: gcc20
>
> Build Reason: scheduler
> Build Source Stamp: [branch trunk] 151050
> Blamelist: chandlerc,foad
>
> BUILD FAILED: failed make.test-suite
>
> sincerely,
> -The Buildbot
Chandler Carruth
2012-Feb-21 11:45 UTC
[LLVMdev] buildbot failure in LLVM on clang-x86_64-debian-fnt
On Tue, Feb 21, 2012 at 2:51 AM, Jay Foad <jay.foad at gmail.com> wrote:> All, > > This buildbot is getting lots of assertion failures in the test suite. > They were probably caused by my commit: > > ------------------------------------------------------------------------ > r151049 | foad | 2012-02-21 09:25:52 +0000 (Tue, 21 Feb 2012) | 6 lines > Changed paths: > M /llvm/trunk/lib/VMCore/LLVMContextImpl.h > M /llvm/trunk/lib/VMCore/Type.cpp > > PR1210: make uniquing of struct and function types more efficient by > using a DenseMap and Talin's new GeneralHash, avoiding the need for a > temporary std::vector on every lookup. > > Patch by Meador Inge! > > ------------------------------------------------------------------------ > > ... but I can't reproduce the failures on my machine. I'm also running > x86_64 Linux, I've checked out the same revision of > llvm+clang+testsuite as the buildbot, I'm doing a Release+Asserts > build. > > Is anyone else seeing these failures? Any ideas how I can reproduce them > here? >If the hashing is the culprit, there are many more variables to consider: different pointer values entering the hash can cause drastically different results. The best way to spot this is often through scrutiny and direct testing of the hashing. We've already found one bug in the hashing library, so it could likely be tested significantly more thoroughly. I don't have time tonight, but I can scrutinize the actual commit using the hashing library to see if we're just putting bad data into it. Either way, I would try speculatively reverting to ensure it is this patch. If so, we can keep experimenting with the patch, but it's important to get the builders back. There are several others seeing the failure as well.> > Thanks, > Jay. > > > Example failure from > > http://lab.llvm.org:8011/builders/clang-x86_64-debian-fnt/builds/4877/steps/make.test-suite/logs/stdio > : > > 0 clang 0x0000000001e417ff > 1 clang 0x0000000001e43a62 > 2 libpthread.so.0 0x00002aaaaacd9f60 > 3 libc.so.6 0x00002aaaab8cb165 gsignal + 53 > 4 libc.so.6 0x00002aaaab8cdf70 abort + 384 > 5 libc.so.6 0x00002aaaab8c42b1 __assert_fail + 241 > 6 clang 0x0000000001d799dc > llvm::Intrinsic::getDeclaration(llvm::Module*, llvm::Intrinsic::ID, > llvm::ArrayRef<llvm::Type*>) + 172 > 7 clang 0x0000000001da8476 > llvm::IRBuilderBase::CreateMemCpy(llvm::Value*, llvm::Value*, > llvm::Value*, unsigned int, bool, llvm::MDNode*) + 278 > 8 clang 0x0000000000917059 > clang::CodeGen::CodeGenFunction::EmitBuiltinExpr(clang::FunctionDecl > const*, unsigned int, clang::CallExpr const*) + 13001 > 9 clang 0x000000000085491c > clang::CodeGen::CodeGenFunction::EmitCallExpr(clang::CallExpr const*, > clang::CodeGen::ReturnValueSlot) + 236 > 10 clang 0x0000000000879146 > 11 clang 0x00000000008807ae > 12 clang 0x0000000000882f40 > clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*, > bool) + 96 > 13 clang 0x0000000000847a27 > clang::CodeGen::CodeGenFunction::EmitAnyExpr(clang::Expr const*, > clang::CodeGen::AggValueSlot, bool) + 247 > 14 clang 0x00000000008e6948 > clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*) + 712 > 15 clang 0x00000000008e9e40 > clang::CodeGen::CodeGenFunction::EmitCompoundStmt(clang::CompoundStmt > const&, bool, clang::CodeGen::AggValueSlot) + 272 > 16 clang 0x00000000008ea0ff > clang::CodeGen::CodeGenFunction::EmitSimpleStmt(clang::Stmt const*) + > 271 > 17 clang 0x00000000008e66a7 > clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*) + 39 > 18 clang 0x00000000008e9c42 > clang::CodeGen::CodeGenFunction::EmitIfStmt(clang::IfStmt const&) + > 594 > 19 clang 0x00000000008e9e40 > clang::CodeGen::CodeGenFunction::EmitCompoundStmt(clang::CompoundStmt > const&, bool, clang::CodeGen::AggValueSlot) + 272 > 20 clang 0x00000000008ea0ff > clang::CodeGen::CodeGenFunction::EmitSimpleStmt(clang::Stmt const*) + > 271 > 21 clang 0x00000000008e66a7 > clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*) + 39 > 22 clang 0x00000000008e71ef > clang::CodeGen::CodeGenFunction::EmitSwitchStmt(clang::SwitchStmt > const&) + 1247 > 23 clang 0x00000000008e9e40 > clang::CodeGen::CodeGenFunction::EmitCompoundStmt(clang::CompoundStmt > const&, bool, clang::CodeGen::AggValueSlot) + 272 > 24 clang 0x00000000008ea0ff > clang::CodeGen::CodeGenFunction::EmitSimpleStmt(clang::Stmt const*) + > 271 > 25 clang 0x00000000008e66a7 > clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*) + 39 > 26 clang 0x00000000008f7193 > clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl, > llvm::Function*, clang::CodeGen::CGFunctionInfo const&) + 995 > 27 clang 0x00000000007ca16b > > clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl) > + 587 > 28 clang 0x00000000007dbe0e > clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl) > + 190 > 29 clang 0x00000000007dc3ed > clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl) + 1197 > 30 clang 0x00000000007dc82b > clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) + 491 > 31 clang 0x00000000007bc394 > 32 clang 0x00000000007bb611 > 33 clang 0x0000000000918525 clang::ParseAST(clang::Sema&, bool) > + 309 > 34 clang 0x00000000007baa04 > clang::CodeGenAction::ExecuteAction() + 68 > 35 clang 0x000000000065e701 > clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 321 > 36 clang 0x0000000000647289 > clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1609 > 37 clang 0x000000000063c268 cc1_main(char const**, char > const**, char const*, void*) + 920 > 38 clang 0x0000000000645f77 main + 7079 > 39 libc.so.6 0x00002aaaab8b7c4d __libc_start_main + 253 > 40 clang 0x0000000000639ad9 > Stack dump: > 0. Program arguments: > > /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/llvm.obj/Release+Asserts/bin/clang > -cc1 -triple x86_64-pc-linux-gnu -emit-llvm -disable-free > -main-file-name slib.c -mrelocation-model static -masm-verbose > -mconstructor-aliases -munwind-tables -target-cpu x86-64 > -momit-leaf-frame-pointer -coverage-file Output/slib.ll -resource-dir > > /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/llvm.obj/Release+Asserts/bin/../lib/clang/3.1 > -D __USE_MISC -D __USE_GNU -D __USE_SVID -D __USE_XOPEN_EXTENDED -D > __USE_XOPEN -D unix -D _GNU_SOURCE -D __STDC_LIMIT_MACROS -D NDEBUG -I > > /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.obj/MultiSource/Applications/siod > -I > /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod > -I > /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.obj/../test-suite.src/include > -I ../../../include -I > /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/llvm.obj/include > -I /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/llvm.src/include > -fmodule-cache-path /var/tmp/clang-module-cache -internal-isystem > /usr/local/include -internal-isystem > > /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/llvm.obj/Release+Asserts/bin/../lib/clang/3.1/include > -internal-externc-isystem /usr/include/x86_64-linux-gnu > -internal-externc-isystem /include -internal-externc-isystem > /usr/include -O3 -fdebug-compilation-dir /bin/pwd -ferror-limit 19 > -fmessage-length 0 -mstackrealign -fgnu-runtime -fobjc-runtime-has-arc > -fobjc-runtime-has-weak -fobjc-fragile-abi -fdiagnostics-show-option > -disable-llvm-optzns -o Output/slib.ll -x c > > /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod/slib.c > 1. > /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod/slib.c:1133:1: > current parser token 'LISP' > 2. > /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod/slib.c:1097:6: > LLVM IR generation of declaration 'gc_relocate' > 3. > /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod/slib.c:1097:6: > Generating code for declaration 'gc_relocate' > 4. > /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod/slib.c:1098:1: > LLVM IR generation of compound statement ('{}') > 5. > /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod/slib.c:1103:4: > LLVM IR generation of compound statement ('{}') > 6. > /home/baldrick/osuosl/slave/clang-x86_64-debian-fnt/test-suite.src/MultiSource/Applications/siod/slib.c:1126:2: > LLVM IR generation of compound statement ('{}') > > > On 21 February 2012 09:45, <llvm.buildmaster at lab.llvm.org> wrote: > > The Buildbot has detected a new failure on builder > clang-x86_64-debian-fnt while building llvm. > > Full details are available at: > > http://lab.llvm.org:8011/builders/clang-x86_64-debian-fnt/builds/4877 > > > > Buildbot URL: http://lab.llvm.org:8011/ > > > > Buildslave for this Build: gcc20 > > > > Build Reason: scheduler > > Build Source Stamp: [branch trunk] 151050 > > Blamelist: chandlerc,foad > > > > BUILD FAILED: failed make.test-suite > > > > sincerely, > > -The Buildbot > > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev >-------------- next part -------------- An HTML attachment was scrubbed... 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Jay Foad
2012-Feb-21 11:51 UTC
[LLVMdev] buildbot failure in LLVM on clang-x86_64-debian-fnt
On 21 February 2012 11:45, Chandler Carruth <chandlerc at google.com> wrote:> Either way, I would try speculatively reverting to ensure it is this patch. > If so, we can keep experimenting with the patch, but it's important to get > the builders back. There are several others seeing the failure as well.OK, I've reverted it. Duncan is letting me play on the build slave machine, where I'm having more luck reproducing it. I think the failures might depend on which version of GCC you use to compile LLVM. Or something. Cheers, Jay.
Meador Inge
2012-Feb-21 14:58 UTC
[LLVMdev] buildbot failure in LLVM on clang-x86_64-debian-fnt
On Tue, Feb 21, 2012 at 4:51 AM, Jay Foad <jay.foad at gmail.com> wrote:> All, > > This buildbot is getting lots of assertion failures in the test suite. > They were probably caused by my commit: > > ------------------------------------------------------------------------ > r151049 | foad | 2012-02-21 09:25:52 +0000 (Tue, 21 Feb 2012) | 6 lines > Changed paths: > M /llvm/trunk/lib/VMCore/LLVMContextImpl.h > M /llvm/trunk/lib/VMCore/Type.cpp > > PR1210: make uniquing of struct and function types more efficient by > using a DenseMap and Talin's new GeneralHash, avoiding the need for a > temporary std::vector on every lookup. > > Patch by Meador Inge! > > ------------------------------------------------------------------------ > > ... but I can't reproduce the failures on my machine. I'm also running > x86_64 Linux, I've checked out the same revision of > llvm+clang+testsuite as the buildbot, I'm doing a Release+Asserts > build. > > Is anyone else seeing these failures? Any ideas how I can reproduce them here?I tested on x86_64 Fedora 16 with GCC 4.6.2 and OS X Lion with clang 3.0 and could not reproduce the problem. I will keep investigating. -- Meador
Jay Foad
2012-Feb-21 15:05 UTC
[LLVMdev] buildbot failure in LLVM on clang-x86_64-debian-fnt
On 21 February 2012 14:58, Meador Inge <meadori at gmail.com> wrote:> On Tue, Feb 21, 2012 at 4:51 AM, Jay Foad <jay.foad at gmail.com> > I tested on x86_64 Fedora 16 with GCC 4.6.2 and OS X Lion with clang > 3.0 and could not reproduce the problem. I will keep investigating.I only get the failures with a Release build using GCC 4.4 (not 4.5 or 4.6). See this thread: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20120220/137504.html Thanks, Jay.
NAKAMURA Takumi
2012-Feb-21 15:51 UTC
[LLVMdev] buildbot failure in LLVM on clang-x86_64-debian-fnt
Jay, I can reproduce with -O2 and -O3. See http://bb.pgr.jp/builders/cmake-llvm-x86_64-linux/builds/185 gcc version 4.4.4 20100726 (Red Hat 4.4.4-13) (GCC) The failures could be suppressed with -O2 -fno-strict-aliasing. I am dubious to type punning in ADT/Hashing.h. ...Takumi