digitalmars.D.bugs - [Issue 5064] New: Crash related to std.algorithm.map, delegates, and casts
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http://d.puremagic.com/issues/show_bug.cgi?id=5064
Summary: Crash related to std.algorithm.map, delegates, and
casts
Product: D
Version: D2
Platform: x86_64
OS/Version: Linux
Status: NEW
Severity: critical
Priority: P2
Component: DMD
AssignedTo: nobody puremagic.com
ReportedBy: code klickverbot.at
---
The following program crashes using DMD 2.049 on Linux x86_64 and DMD 2.048 on
OS X x86_64:
---
import std.algorithm;
void main() {
foreach ( offset; 0 .. 26 ) {
map!( ( c ){ return cast( dchar )offset; } )( "asdf" );
}
}
---
If you remove the cast to dchar, the segmentation fault does no longer occur.
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Oct 16 2010
d-bugmail puremagic.com
http://d.puremagic.com/issues/show_bug.cgi?id=5064
klickverbot <code klickverbot.at> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
---
The foreach loop is not needed, another temporary »works« as well:
---
import std.algorithm;
void main() {
auto a = 1;
auto dg = ( uint c ){ return cast( dchar )a; };
// This works:
dg( 1 );
// This crashes:
map!( ( c ){ return dg( c ); } )( [ 1 ] );
}
---
GDB prints the innermost frame like this:
0x08049846 in ave.main.__dgliteral2!(int).__dgliteral2 (this=0x0, c=1) at
ave.d:11
Note that this is null – could this be an issue, or is this relative to the
current frame?
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http://d.puremagic.com/issues/show_bug.cgi?id=5064 --- The crash does not occur if the executable is compiled with -inline. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Oct 16 2010
http://d.puremagic.com/issues/show_bug.cgi?id=5064
Reduced test case. Possibly related to bug 1350.
struct Map(alias fun)
{
dchar xxx;
this(int[] input) {
fun(input[0]);
}
}
void main() {
auto dg = ( int c ){ return cast(dchar)'x'; };
Map!( ( c ){ return dg( c ); } )( [ 1 ] );
}
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Nov 08 2010
http://d.puremagic.com/issues/show_bug.cgi?id=5064
Further reduced. Shows it is caused by an closure passed as an alias parameter,
+ a struct with initialized members. If you remove the '=7', it won't crash.
----
struct Map5064(alias fun)
{
int xxx = 7;
void crash() {
fun();
}
}
void bug5064()
{
void delegate() dg = (){ };
Map5064!( dg ) q;
q.crash();
}
void main()
{
bug5064();
}
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Nov 23 2010
http://d.puremagic.com/issues/show_bug.cgi?id=5064
Andrei Alexandrescu <andrei metalanguage.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |andrei metalanguage.com
AssignedTo|nobody puremagic.com |andrei metalanguage.com
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Jan 09 2011
http://d.puremagic.com/issues/show_bug.cgi?id=5064
Andrei Alexandrescu <andrei metalanguage.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|andrei metalanguage.com |bugzilla digitalmars.com
14:30:09 PST ---
Reassigning to Walter (Don, of course you're kindly invited to look into it); I
thought this is a Phobos issue, but it's a dmd issue.
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Jan 16 2011
http://d.puremagic.com/issues/show_bug.cgi?id=5064
Brad Roberts <braddr puremagic.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Platform|x86_64 |x86
---
Mass migration of bugs marked as x86-64 to just x86. The platform run on isn't
what's relevant, it's if the app is a 32 or 64 bit app.
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Feb 06 2011
http://d.puremagic.com/issues/show_bug.cgi?id=5064
SomeDude <lovelydear mailmetrash.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |lovelydear mailmetrash.com
PDT ---
I've noted that the issue is on x86_64, but FYI, on 2.059 Win32 the cases in
description and comment 1 run fine (even without -inline), while Don's test
cases produce an access violation.
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Apr 21 2012
http://d.puremagic.com/issues/show_bug.cgi?id=5064
Don <clugdbug yahoo.com.au> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEW
AssignedTo|bugzilla digitalmars.com |nobody puremagic.com
Summary|std.algorithm.map, |runtime crash using closure
|delegates and cast(dchar) = |as alias parameter
|runtime crash |
OS/Version|Linux |All
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May 21 2012
http://d.puremagic.com/issues/show_bug.cgi?id=5064
Denis Shelomovskij <verylonglogin.reg gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |verylonglogin.reg gmail.com
15:45:23 MSD ---
Looks close to Issue 7965 (especially a requirement of explicit field
initialization)
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Jun 17 2012
http://d.puremagic.com/issues/show_bug.cgi?id=5064
Maxim Fomin <maxim maxim-fomin.ru> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |maxim maxim-fomin.ru
Resolution| |FIXED
---
Fixed in issue 8774
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Dec 27 2012