[Issue 15768] std.stdio.trustedStdout accesses __gshared data without synchronization.
https://issues.dlang.org/show_bug.cgi?id=15768 --- Comment #1 from github-bugzi...@puremagic.com --- Commits pushed to stable at https://github.com/dlang/phobos https://github.com/dlang/phobos/commit/92eed4f45ed01a5d1f975fb23859ea63473e6f5e Warn about Issue 15768 https://github.com/dlang/phobos/commit/02d1aedf6d3d001989ee342eae6d9fc6db61d399 Merge pull request #4401 from JackStouffer/patch-9 Warn about Issue 15768 --
[Issue 16120] New: dmd does not inline simple range primitives
https://issues.dlang.org/show_bug.cgi?id=16120
Issue ID: 16120
Summary: dmd does not inline simple range primitives
Product: D
Version: D2
Hardware: x86_64
OS: Linux
Status: NEW
Severity: enhancement
Priority: P1
Component: dmd
Assignee: nob...@puremagic.com
Reporter: greensunn...@gmail.com
observation 1) dmd doesn't inline range primitives (it's 8x slower!)
observation 2) foreach with direct random access is lower in dmd (30%)
simple benchmark yields
```
> dmd -release -O foo.d && ./foo
0 881 ms, 351 μs, and 9 hnsecs
1 685 ms, 888 μs, and 4 hnsecs
2 685 ms, 654 μs, and 4 hnsecs
3 7 secs, 211 ms, 530 μs, and 3 hnsecs
```
for:
auto f_random_access(R)(R r)
{
auto sum = 0;
foreach (const i; 0 .. r.length)
{
sum += r[i];
}
return sum;
}
auto f_foreach(R)(R r)
{
auto sum = 0;
foreach (const el; r)
{
sum += el;
}
return sum;
}
auto f_foreach_ref(R)(R r)
{
auto sum = 0;
foreach (const ref el; r)
{
sum += el;
}
return sum;
}
auto f_for(R)(R r)
{
import std.range;
auto sum = 0;
for (r.popFront(); !r.empty; r.popFront())
{
sum += r.front;
}
return sum;
}
void main() {
import std.datetime: benchmark, Duration;
import std.stdio: writeln;
import std.array: array;
import std.conv: to;
import std.random: randomShuffle;
import std.range:iota;
auto arr = iota(100_000).array;
arr.randomShuffle;
auto i = 0;
void f0(){ i += arr.f_random_access; }
void f1(){ i += arr.f_foreach; }
void f2(){ i += arr.f_foreach_ref; }
void f3(){ i += arr.f_for; }
auto rs = benchmark!(f0, f1, f2, f3)(10_000);
foreach(j,r;rs)
writeln(j, " ", r.to!Duration);
// prevent any optimization
writeln(i);
}
--
[Issue 12558] try/catch allows implicit catching of Errors without specifying any Exception type
https://issues.dlang.org/show_bug.cgi?id=12558 --- Comment #15 from Andrei Alexandrescu --- Yes, catching Errors should always be explicit. --
[Issue 16121] New: the canonical way to create and use an exception type is not documented on dlang.org
https://issues.dlang.org/show_bug.cgi?id=16121 Issue ID: 16121 Summary: the canonical way to create and use an exception type is not documented on dlang.org Product: D Version: D2 Hardware: All URL: http://dlang.org/ OS: All Status: NEW Severity: enhancement Priority: P3 Component: dlang.org Assignee: nob...@puremagic.com Reporter: poliklosio.dl...@gmail.com As a new D user I need basic information, for example if an exception should be a class or struct, what class it should inherit from, and what is a good or typical way to pass exception message in D. An example that I can easily spot and analyze would be by far the best way to provide this. I've been searching for this but could not find such example. When I search for "dlang exception handling", the first page that google redirects me to is: https://dlang.org/spec/errors.html It doesn't contain the needed info. Then I tried to navigate manually to a page that should contain the information. I landed on: https://dlang.org/exception-safe.html No luck there either. --
[Issue 16121] the canonical way to create and use an exception type is not documented on dlang.org
https://issues.dlang.org/show_bug.cgi?id=16121 ag0ae...@gmail.com changed: What|Removed |Added CC||ag0ae...@gmail.com --- Comment #1 from ag0ae...@gmail.com --- (In reply to Piotr from comment #0) > As a new D user I need basic information, for example if an exception should > be a class or struct, what class it should inherit from, > and what is a good > or typical way to pass exception message in D. > An example that I can easily spot and analyze would be by far the best way > to provide this. Must be a class that inherits from Throwable. And usually you inherit from Exception. > I've been searching for this but could not find such example. > When I search for "dlang exception handling", the first page that google > redirects me to is: > https://dlang.org/spec/errors.html > It doesn't contain the needed info. > Then I tried to navigate manually to a page that should contain the > information. I landed on: > https://dlang.org/exception-safe.html > No luck there either. One page you should be able to find is this: https://dlang.org/library/object/exception.html I agree that there should be a document describing the matter. Maybe there is and we both just can't find it. --
[Issue 16122] New: user-friendly CLI interface for dmd
https://issues.dlang.org/show_bug.cgi?id=16122 Issue ID: 16122 Summary: user-friendly CLI interface for dmd Product: D Version: D2 Hardware: x86_64 OS: Linux Status: NEW Severity: enhancement Priority: P1 Component: dmd Assignee: nob...@puremagic.com Reporter: greensunn...@gmail.com tl;dr: I couldn't find a found to set the output file of dmd. Tested with 2.071 and git master > dmd test.d -o bin/test Error: -o no longer supported, use -of or -od > dmd test_save.d -of=bin/test > dmd test_save.d -of bin/test Error: argument expected for switch '-of' > dmd test_save.d -of=bin/test creates '=bin/test' > dmd test_save.d -od=bin -of=test creates folder '=bin' and binary '=test' (in current directory) Documentation says: -odobjdir write object files relative to directory objdir instead of to the current directory. -op can be used if the original package hierarchy should be retained -offilename Set output file name to filename in the output directory. The output file can be an object file, executable file, or library file depending on the other switches. .. so of course I now feel silly, but then again - can't we have a user friendly CLI? --
[Issue 16123] New: alias member of member
https://issues.dlang.org/show_bug.cgi?id=16123
Issue ID: 16123
Summary: alias member of member
Product: D
Version: D2
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P1
Component: dmd
Assignee: nob...@puremagic.com
Reporter: schvei...@yahoo.com
Currently, you can alias a member of your struct no problem:
struct S
{
int x;
alias y = x;
}
If I want to alias a member of a member, it does not work:
struct T
{
S s;
alias y = s.x; // note, this compiles just fine, you need to use it to flag
the error.
}
void main()
{
T t;
t.s.y = 5; // ok
t.y = 5; // Error: need 'this' for 'x' of type 'int'
}
To me, this doesn't make sense. The requirements shouldn't be any different, if
I can alias a member, I should be able to alias a member's member, especially
if the member is a field.
I'm not sure if this is an enhancement or a bug. Flagging as bug, change if
necessary.
Note, in older versions of the compiler (2.069 and earlier), I get an
additional error:
Error: struct testalias.T 'x' is not a member
--
[Issue 16123] alias member of member
https://issues.dlang.org/show_bug.cgi?id=16123 Ketmar Dark changed: What|Removed |Added CC||ket...@ketmar.no-ip.org --
