[Issue 5305] intrinsic functions have @safe stripped of them in release mode.

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=5305

Walter Bright  changed:

   What|Removed |Added

   Keywords||pull

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[Issue 5305] intrinsic functions have @safe stripped of them in release mode.

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=5305

--- Comment #4 from Walter Bright  ---
Works with the current version of DMD. Adding a test case:

https://github.com/dlang/dmd/pull/5845

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[Issue 5305] intrinsic functions have @safe stripped of them in release mode.

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=5305

hst...@quickfur.ath.cx changed:

   What|Removed |Added

   Keywords||safe
 CC||hst...@quickfur.ath.cx

--

[Issue 5305] intrinsic functions have @safe stripped of them in release mode.

[d-bugmail]

http://d.puremagic.com/issues/show_bug.cgi?id=5305


bearophile_h...@eml.cc changed:

   What|Removed |Added

 CC||bearophile_h...@eml.cc


--- Comment #3 from bearophile_h...@eml.cc 2012-01-21 18:50:09 PST ---
(In reply to comment #2)
 The solution is one of:
 
 1. have the compiler complain about attempts to take the address of an
 intrinsic
 
 2. add a library version of the intrinsic

Is it possible for the D compiler to use the intrinsic in most cases when sqrt
is used directly, and give the pointer to a library sqrt when the programmer
uses a sqrt?

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[Issue 5305] intrinsic functions have @safe stripped of them in release mode.

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Walter Bright bugzi...@digitalmars.com changed:

   What|Removed |Added

 CC||bugzi...@digitalmars.com


--- Comment #1 from Walter Bright bugzi...@digitalmars.com 2012-01-20 
12:17:17 PST ---
For convenience, here's the example:

import std.math;

T[] map(T, V)(T function(T) f, V[] list)
{
T[] result = new T[](list.length);

foreach(k, v; list)
{
result[k] = f(v);
}

return result;
}

void main()
{
assert (map!(real, float) (sqrt, [4.0f, 9.0f]) == [2.0f, 3.0f]);
}

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[Issue 5305] intrinsic functions have @safe stripped of them in release mode.

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http://d.puremagic.com/issues/show_bug.cgi?id=5305



--- Comment #2 from Walter Bright bugzi...@digitalmars.com 2012-01-20 
12:33:25 PST ---
A reduced test case:

  import std.math;
  void map(real function(real) f) { }
  void main() { map(sqrt); }

What is happening here is that sqrt() is an intrinsic, it doesn't actually
exist in the libphobos2.a. When compiled with -release, the assert() goes away,
and sqrt is never referenced, hence no error.

Without -release, the linker looks for std.math.sqrt, and can't find it because
it's an intrinsic.

The solution is one of:

1. have the compiler complain about attempts to take the address of an
intrinsic

2. add a library version of the intrinsic

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