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Re: MallocDebug is a bit to strict when launching an app
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Re: MallocDebug is a bit to strict when launching an app


  • Subject: Re: MallocDebug is a bit to strict when launching an app
  • From: Eric Albert <email@hidden>
  • Date: Tue, 29 Jun 2004 00:54:37 -0700

On Jun 28, 2004, at 2:48 PM, Alin Pilkington wrote:

We are using CW 9.2 for development and are creating a BSD Mach-O target. Metrowerks has supplied a BSD runtime library to link against to satisfy references to items not contained in the Apple dynamic BSD libraries. This works out good except for 2 symbols which are defined in both libraries:

MallocDebug terminates the launch of the app and gives the reason for the error as the warning about the duplicate references.

MallocDebug inserts a library with a special version of malloc (and other functions, I think) into your application. To get the library insertion to work (and override the existing versions of those functions), it has to run your application with DYLD_FORCE_FLAT_NAMESPACE set to 1. When running with a flat namespace, you can't have libraries with conflicting symbols. That's why your workaround of removing the symbols works -- you don't have any conflicting symbols any more, so your application can run with a flat namespace.


If this is troublesome for you, I'd suggest filing a bug report with Apple asking for MallocDebug to work correctly with two-level namespaces.

Hope this helps,
Eric
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References: 
 >MallocDebug is a bit to strict when launching an app (From: Alin Pilkington <email@hidden>)

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