For questions about (suspected) incorrect behavior of a compiler. Use with the appropriate language tag and, where applicable, with the tag for the compiler in question.
Questions tagged [compiler-bug]
309 questions
3
votes
1 answer
Intel C++ compiler - const string is modifiable
I coded the following:
#include
#include
#include
using namespace std;
string encode(const string& word) {
boost::algorithm::to_upper(word);
return word;
}
int main() {
string word =…
mftrmbn
- 113
- 1
- 5
3
votes
1 answer
STM32F4 not pushing/popping floating point registers
I have a code
const float previousTemperature = getTemperature();
someNestedFunction();
someOtherActions();
setTemperature(previousTemperature);
My problem is that in someNestedFunction(); previousTemperature gets modified. I have looked at the…
mactro
- 518
- 7
- 13
3
votes
1 answer
Workaround for gcc bug: using chrono_literals in template breaks string_literals
In GCC 4.9.2 the following code fails to compile:
#include
#include
using namespace std::literals::string_literals;
using namespace std::literals::chrono_literals;
template
struct S
{
S()
{
"hello"s;
…
M.M
- 138,810
- 21
- 208
- 365
3
votes
1 answer
VS 2015 internal compiler error for static constexpr const char* a[] = {"foo", "bar"}
this compiles fine:
static constexpr char* a[] = {"foo", "bar"};
this has an internal error (C1001) asking me to turn optimizations off, any ideas why?
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=EN-US&k=k(C1001)&rd=true
static…
noztol
- 494
- 6
- 25
3
votes
0 answers
Bug in MSVC compiler? Clang and GCC don't complain. Testing for valid operator in compile time
So consider the following:
Used for convenience (plus C++17 "support"):
template
using void_t = void;
template
using bool_constant = std::integral_constant;
Then we have the main…
DeiDei
- 10,205
- 6
- 55
- 80
3
votes
0 answers
Strange behavior with nested types and generics
The following code does not compile using VS 2013:
public class Base
{
}
public class Derived : Base
{
public class Nested
{
public class Inside
{
}
}
}
The compiler says:
Circular…
Peter Perot
- 1,003
- 1
- 10
- 15
3
votes
1 answer
Is this a compiler bug? Am I doing something wrong?
I'm trying to make a simple map to look up some data, but the results are coming out very strange:
#include "stdafx.h"
#include "atlstr.h"
#include
abelenky
- 63,815
- 23
- 109
- 159
3
votes
1 answer
C++ - "Most important const" doesn't work with expressions?
According to Herb Sutter's article http://herbsutter.com/2008/01/01/gotw-88-a-candidate-for-the-most-important-const/, the following code is correct:
#include
#include
using namespace std;
vector> f() { return…
mwnx
- 97
- 4
3
votes
0 answers
Pointer to member function template parameter in Visual Studio 2013
I have run into a corner case and looking for a work around. I am almost sure that it is a compiler bug and I couldn't come up with anything. I have a class which optionally requires a pointer to a member function. To allow it to be optional I made…
Cem Kalyoncu
- 14,120
- 4
- 40
- 62
3
votes
2 answers
std::shared_ptr in an std::initializer_list appears to be getting destroyed prematurely
Edit: This is indeed caused by a bug in Visual Studio - and it has already been fixed. The issue is not reproducible after applying Update 2 to Visual Studio (release candidate available here). I apologize; I thought I was up to date with my…
Lilshieste
- 2,744
- 14
- 20
3
votes
1 answer
Workaround for GCC 4.8.1: sorry, unimplemented: mangling argument_pack_select
Consider the following code:
#include
template
Result f(Function func, Types... values)
{
return std::get<0>(std::make_tuple(func(values)...));
}
template
int g(const…
Vincent
- 57,703
- 61
- 205
- 388
3
votes
1 answer
compile error on variadic template function parameter
I'm trying to write some parameter wrapping helper code like below
#include
#include
struct test{};
namespace ns {
struct test{};
}
template
struct arg_wrapper;
template<>
struct arg_wrapper
{
…
summerlight
- 882
- 7
- 16
2
votes
1 answer
Is this an F# 2.0 parser bug?
Microsoft (R) F# 2.0 Interactive build 4.0.40219.1
I'm trying to define new record type:
type TestOptions =
{ perRunGC : bool;
collectGCStat : bool;
}
All is fine, but let's add one more field:
type TestOptions =
{ perRunGC : bool;
…
controlflow
- 6,667
- 1
- 31
- 55
2
votes
0 answers
Shouldn't fgets(s, n, stream) return an empty string instead of NULL for all n<=1?
According to the standard (C17 draft, 7.21.7.2), fgets (¶1)
char *fgets(char * restrict s, int n, FILE * restrict stream);
reads from stream at most n-1 characters (until the first '\n' (which is in this case also written to the target) or EOF)…
Lover of Structure
- 1,561
- 3
- 11
- 27
2
votes
2 answers
C++ template resolution error in recent MSVC, OK with GCC, LLVM and older MSVC
Here is some C++ template function which, in the general case, calls one of its specializations.
After recently upgrading Microsoft Visual Studio to 17.5.4 (MSVC 19.35.32217), compiling the source code below produces the following compilation…
Thierry Lelegard
- 423
- 2
- 11