• d-bugmail puremagic.com (74/74) Mar 19 2007 http://d.puremagic.com/issues/show_bug.cgi?id=1068
• d-bugmail puremagic.com (9/9) Apr 16 2007 http://d.puremagic.com/issues/show_bug.cgi?id=1068
• d-bugmail puremagic.com (10/10) Apr 25 2007 http://d.puremagic.com/issues/show_bug.cgi?id=1068

d-bugmail puremagic.com writes:

http://d.puremagic.com/issues/show_bug.cgi?id=1068

           Summary: stack corruption with mixins and function templates
           Product: D
           Version: 1.009
          Platform: PC
               URL: http://www-users.mat.uni.torun.pl/~h3r3tic/bug.zip
        OS/Version: Windows
            Status: NEW
          Keywords: wrong-code
          Severity: critical
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla digitalmars.com
        ReportedBy: h3r3tic mat.uni.torun.pl


When compiled as:
dmd Test.d Module.d, the resulting executable prints:

context: Module.Context 00900FE0
<context.func
thisptr: 00900FE0
str length: 540698740
str: 'Error: Access Violation


The addresses may vary, but generally random stack corruption happens with
slight modifications to the source code. The correct output is:

context: Context 00A20FE0
<context.func
thisptr: 00A20FE0
str length: 1
str: 'a'
context.func>
returning from opCall


The correct executable can be obtained by compiling the program with earlier
versions of DMD. I tried 0.175 and 1.0.

The error goes away when the order of modules is reversed at compilation, like
'dmd Module.d Test.d'.

It also happens with DMD 1.007, but doesnt happen with gdcWin 0.23 ( 1.007).


Test files (as in bugzilla's 'URL'):

Module.d
---
template Mix() {
        static void foobar() {
                auto context = new Context;
                printf(`context: %.*s %0.8X`\n, context.toString,
cast(void*)context);
                context.func!(typeof(this))();
                printf(`returning from opCall`\n);
        }
}


class Bar {
        mixin Mix;
}


void someFunc(char[] z) {
        printf(`str length: %d`\n, z.length);
        printf(`str: '%.*s'`\n, z);
}


class Context {
        void func(T)() {
                printf(`<context.func`\n);
                printf(`thisptr: %0.8X`\n, this);
                someFunc(`a`);
                printf(`context.func>`\n);
        }
}
---


Test.d
---
import Module;


class Foo {
        mixin Mix;
}


void main() {
        Bar.foobar();
}
---


-- 

d-bugmail puremagic.com writes:

http://d.puremagic.com/issues/show_bug.cgi?id=1068


bugzilla digitalmars.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED




------- Comment #1 from bugzilla digitalmars.com  2007-04-16 22:21 -------
Fixed DMD 1.012


-- 

d-bugmail puremagic.com writes:

http://d.puremagic.com/issues/show_bug.cgi?id=1068


thomas-dloop kuehne.cn changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         OS/Version|Windows                     |All




------- Comment #2 from thomas-dloop kuehne.cn  2007-04-25 12:48 -------
Added to DStress as
http://dstress.kuehne.cn/run/t/template_62_A.d
http://dstress.kuehne.cn/run/t/template_62_B.d


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