Cannot find drvector_clear

[Ao Vak]

Hello hello

I am using drvector to store a dynamic list (as expected) and need to regularly clear all the elements of the vector throughout the lifespan of the client
I found the drvector_clear method in the docs, and it seems like it would be ideal for this, but it is nowhere to be found in drvector.h. I am using the latest version of DynamoRIO

Why don't I have access to it?

Right now I'm doing drvector_delete followed by drvector_init to clear a vector, which doesn't seem ideal.

Also I don't know if this is a bug, but doing drvector_init, drvector_delete, then drvector_append doesn't cause issues and appends to the vector fine, but doing drvector_delete again and then drvector_append makes drvector_append crash the client, which is strange.....

[Derek Bruening]

On Sat, May 30, 2026 at 12:10 AM Ao Vak <aova...@gmail.com> wrote:

Hello hello

I am using drvector to store a dynamic list (as expected) and need to regularly clear all the elements of the vector throughout the lifespan of the client
I found the drvector_clear method in the docs, and it seems like it would be ideal for this, but it is nowhere to be found in drvector.h. I am using the latest version of DynamoRIO

Why don't I have access to it?

Right now I'm doing drvector_delete followed by drvector_init to clear a vector, which doesn't seem ideal.

The online docs match the weekly cronbuilds at https://github.com/DynamoRIO/dynamorio/releases. If you are using the last "official" release 11.3 you would want to look at the docs inside the 11.3 package itself. drvector_clear was added after the 11.3 release.  I would suggest using the latest weekly cronbuild and then you will have access to drvector_clear.

  

Also I don't know if this is a bug, but doing drvector_init, drvector_delete, then drvector_append doesn't cause issues and appends to the vector fine, but doing drvector_delete again and then drvector_append makes drvector_append crash the client, which is strange.....

You mean there was no drvector_init call after the 2nd drvector_delete? Wouldn't that explain the failure? 

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