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dcci / gist:27a191c991052a1b71cb
Created Oct 17, 2015
Go home clang, you're drunk.
View gist:27a191c991052a1b71cb
% cat template.cpp
template<class T>
class X {
T f(T x) { return x; }
T foo(void);
template<class T>
T X::foo(void)
View gist:8910a17770e46ecce3dc
[1984/2575] Building CXX object tools/clang/lib/CodeGen/CMakeFiles/clangCodeGen.dir/CGExprScalar.cpp.o
FAILED: /usr/bin/CC -DCLANG_ENABLE_ARCMT -DCLANG_ENABLE_OBJC_REWRITER -DCLANG_ENABLE_STATIC_ANALYZER -DGTEST_HAS_RTTI=0 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -fPIC -fvisibility-inlines-hidden -Wall -W -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wcovered-switch-default -Wnon-virtual-dtor -std=c++11 -fcolor-diagnostics -ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual -Wno-nested-anon-types -Itools/clang/lib/CodeGen -I../tools/clang/lib/CodeGen -I../tools/clang/include -Itools/clang/include -Iinclude -I../include -I/usr/local/include -fno-exceptions -fno-rtti -MMD -MT tools/clang/lib/CodeGen/CMakeFiles/clangCodeGen.dir/CGExprScalar.cpp.o -MF tools/clang/lib/CodeGen/CMakeFiles/clangCodeGen.dir/CGExprScalar.cpp.o.d -o tools/clang/lib/CodeGen/CMakeFiles/clangCodeGen.dir/CGExprScalar.
View gist:efaea9678788d74769a4
#include <assert.h>
#include <link.h>
#include <dlfcn.h>
#include <stdio.h>
#include <pthread.h>
static int
callback(struct dl_phdr_info *info, size_t size, void *data)
void *handle;
View gist:e69cad69179e23069267f4f986be0975
[davide@localhost bin]$ g++ blah.cpp -o blah
blah.cpp: In function ‘int main()’:
blah.cpp:10:9: error: ‘union’ tag used in naming ‘struct G<int>’ [-fpermissive]
union G<int> foo;
blah.cpp:4:7: note: ‘struct G<int>’ was previously declared here
class G {
[davide@localhost bin]$ cat blah.cpp
#include <stdio.h>
View gist:c737c11cc58c0c13bffac3dab30c6002
*** Dumping AST Record Layout
0 | class llvm::DILocalVariable
0 | class llvm::DIVariable (base)
0 | class llvm::DINode (base)
0 | class llvm::MDNode (base)
0 | class llvm::Metadata (base)
0 | const unsigned char SubclassID
1:0-1 | unsigned int Storage
2 | unsigned short SubclassData16
4 | unsigned int SubclassData32
dcci / gist:f83538d46dbcde9457bc663a2218c97e
Created Jun 23, 2016
Replacing malloc() on Windows.
View gist:f83538d46dbcde9457bc663a2218c97e
#include <limits.h>
#include <malloc.h>
#include <new.h>
#include <windows.h>
#include <stddef.h>
#include <stdio.h>
namespace {
const size_t kWindowsPageSize = 4096;
const size_t kMaxWindowsAllocation = INT_MAX - kWindowsPageSize;
dcci / floating.c
Last active Jul 13, 2016
Floating point is fun
View floating.c
#include <math.h>
#include <stdio.h>
int main(void) {
// pow(x, 0.5) -> sqrt(x)
printf("%f %f\n", pow(-0.0, 0.5), sqrt(-0.0));
return (0);
View gist:5f674b93f8bfeae393e01bc35a9b9228
/home/davide/work/llvm-monorepo/build/bin/opt @$1 /home/davide/work/llvm-monorepo/build/bin/unopt.ll -o - | /home/davide/work/llvm-monorepo/build/bin/lli | grep ^1
/home/davide/work/llvm-monorepo/build/bin/opt-broken @$1 /home/davide/work/llvm-monorepo/build/bin/unopt.ll -o - | /home/davide/work/llvm-monorepo/build/bin/lli | grep ^-1
[[ $ret_sane == 0 && $ret_broken == 0 ]] && exit 0
exit 1
View gist:95da518b5216c7e187d49b0dcf88d880
[davide@localhost build]$ ninja check-llvm
[573/2081] Building CXX object lib/
sforms/Scalar -Iinclude -I../include -fPIC -fvisibility-inlines-hidden -Wall -W -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long
-long -Wno-maybe-uninitialized -Wdelete-non-virtual-dtor -Wno-comment -Werror=date-time -std=c++11 -g -fno-exceptions -fno-rtti -MMD -MT lib/Transforms/Scalar/CMakeFiles/LLVMScal
arOpts.dir/SCCP.cpp.o -MF lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/SCCP.cpp.o.d -o lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/SCCP.cpp.o -c ../lib/Transforms/Sca
../lib/Transforms/Scalar/SCCP.cpp: In member function ‘void {anonymous}::SCCPSolver::markOverdefined({anonymous}::LatticeVal&, llvm::Value*)’:
dcci /
Last active Mar 1, 2017
btree interface
use std::marker::PhantomData;
/// A B-tree data structure which nodes are allocated from a pool.
pub struct BTree<K, V> {
index : u32,
unused1: PhantomData<K>,
unused2: PhantomData<V>
// A Node reference is a direct index to an element of the pool.
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