By the way, the ABI has changed - maybe this is the reason? Was the  binary recompiled and re-linked?

Prof. Victor Lazzarini

Maynooth University

Ireland

On 11 Jul 2026, at 17:12, Victor Lazzarini <000010b17ddd988e-dmarc-request@listserv.heanet.ie> wrote:



midiGlobals is allocated in csoundReset(), it looks like something going very wrong for it to be NULL.

Maybe a backtrace may give some clues.

Prof. Victor Lazzarini

Maynooth University

Ireland

On 11 Jul 2026, at 16:42, Eduardo Moguillansky <eduardo.moguillansky@gmail.com> wrote:



*Warning*

This email originated from outside of Maynooth University's Mail System. Do not reply, click links or open attachments unless you recognise the sender and know the content is safe.

I am getting a confusing crash with latest develop. The csound binary crashes (even if csound is called without any args) within csoundSetExternalMidiErrorStringCallback in csound_rtio.c

void
csoundSetExternalMidiErrorStringCallback(CSOUND *csound,
                                         const char *(*func)(int32_t)) {
  csound->midiGlobals->MidiErrorStringCallback = func;
}

csound->midiGlobals seems to be null, but maybe the problem is that this function is being called at all? 

If I comment the line "csound->midiGlobals..." out, the crash is gone. 

best regards,

Eduardo

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Is don seolaí / do na seolaithe thuasluaite amháin an ríomhphost seo. D’fhéadfadh an t-eolas atá ann a bheith rúnda agus faoi phribhléid. Mura seolaí tú, tá cosc iomlán ar aon eolas atá sa ríomhphost seo a úsáid, a scaipeadh, a dháileadh, a fhoilsiú nó a chóipeáil. Má fuair tú an ríomhphost seo trí thimpiste, cuir sin in iúl dúinn láithreach trí ríomhphost a chur chuig  dataprotection@mu.ie  agus scrios an ríomhphost seo ó do chóras.

Tabhair faoi deara go bhfuil Ollscoil Mhá Nuad faoi réir dhlíthe um Shaoráil Faisnéise agus um Chosaint Sonraí. D’fhéadfadh ceangal a bheith orainn ábhar ríomhphoist a nochtadh faoin Acht um Shaoráil Faisnéise 2014, faoin Acht um Chosaint Sonraí 2018 nó faoi GDPR.

Registered charity number 20037130

 

OPCODE7DIR64 do you mean? Are you using floats?

Prof. Victor Lazzarini

Maynooth University

Ireland

On 11 Jul 2026, at 20:39, Eduardo Moguillansky <eduardo.moguillansky@gmail.com> wrote:



I see the problem now, csound seems to still look in the default user path for plugins, even if OPCODE7DIR is set. Thanks for the heads-up regarding ABI changes

On Sat, Jul 11, 2026 at 6:17 PM Victor Lazzarini <000010b17ddd988e-dmarc-request@listserv.heanet.ie> wrote:

By the way, the ABI has changed - maybe this is the reason? Was the  binary recompiled and re-linked?

Prof. Victor Lazzarini

Maynooth University

Ireland

On 11 Jul 2026, at 17:12, Victor Lazzarini <000010b17ddd988e-dmarc-request@listserv.heanet.ie> wrote:



midiGlobals is allocated in csoundReset(), it looks like something going very wrong for it to be NULL.

Maybe a backtrace may give some clues.

Prof. Victor Lazzarini

Maynooth University

Ireland

On 11 Jul 2026, at 16:42, Eduardo Moguillansky <eduardo.moguillansky@gmail.com> wrote:



*Warning*

This email originated from outside of Maynooth University's Mail System. Do not reply, click links or open attachments unless you recognise the sender and know the content is safe.

I am getting a confusing crash with latest develop. The csound binary crashes (even if csound is called without any args) within csoundSetExternalMidiErrorStringCallback in csound_rtio.c

void
csoundSetExternalMidiErrorStringCallback(CSOUND *csound,
                                         const char *(*func)(int32_t)) {
  csound->midiGlobals->MidiErrorStringCallback = func;
}

csound->midiGlobals seems to be null, but maybe the problem is that this function is being called at all? 

If I comment the line "csound->midiGlobals..." out, the crash is gone. 

best regards,

Eduardo

The information contained in this email may be confidential and privileged. It is intended only for the addressee(s) stated above. If you are not an addressee any use, dissemination, distribution, publication or copying of the information contained in this email is strictly prohibited. If you have received this email in error, please immediately notify us by email at dataprotection@mu.ie and delete this email from your system.

Please note that Maynooth University is subject to Freedom of Information and Data Protection laws. We may be required to disclose the content of emails under the FOI Act 2014, the Data Protection Act 2018 or GDPR.

Is don seolaí / do na seolaithe thuasluaite amháin an ríomhphost seo. D’fhéadfadh an t-eolas atá ann a bheith rúnda agus faoi phribhléid. Mura seolaí tú, tá cosc iomlán ar aon eolas atá sa ríomhphost seo a úsáid, a scaipeadh, a dháileadh, a fhoilsiú nó a chóipeáil. Má fuair tú an ríomhphost seo trí thimpiste, cuir sin in iúl dúinn láithreach trí ríomhphost a chur chuig  dataprotection@mu.ie  agus scrios an ríomhphost seo ó do chóras.

Tabhair faoi deara go bhfuil Ollscoil Mhá Nuad faoi réir dhlíthe um Shaoráil Faisnéise agus um Chosaint Sonraí. D’fhéadfadh ceangal a bheith orainn ábhar ríomhphoist a nochtadh faoin Acht um Shaoráil Faisnéise 2014, faoin Acht um Chosaint Sonraí 2018 nó faoi GDPR.

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Please note that Maynooth University is subject to Freedom of Information and Data Protection laws. We may be required to disclose the content of emails under the FOI Act 2014, the Data Protection Act 2018 or GDPR.

Is don seolaí / do na seolaithe thuasluaite amháin an ríomhphost seo. D’fhéadfadh an t-eolas atá ann a bheith rúnda agus faoi phribhléid. Mura seolaí tú, tá cosc iomlán ar aon eolas atá sa ríomhphost seo a úsáid, a scaipeadh, a dháileadh, a fhoilsiú nó a chóipeáil. Má fuair tú an ríomhphost seo trí thimpiste, cuir sin in iúl dúinn láithreach trí ríomhphost a chur chuig  dataprotection@mu.ie  agus scrios an ríomhphost seo ó do chóras.

Tabhair faoi deara go bhfuil Ollscoil Mhá Nuad faoi réir dhlíthe um Shaoráil Faisnéise agus um Chosaint Sonraí. D’fhéadfadh ceangal a bheith orainn ábhar ríomhphoist a nochtadh faoin Acht um Shaoráil Faisnéise 2014, faoin Acht um Chosaint Sonraí 2018 nó faoi GDPR.

Registered charity number 20037130

 

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Please note that Maynooth University is subject to Freedom of Information and Data Protection laws. We may be required to disclose the content of emails under the FOI Act 2014, the Data Protection Act 2018 or GDPR.

Is don seolaí / do na seolaithe thuasluaite amháin an ríomhphost seo. D’fhéadfadh an t-eolas atá ann a bheith rúnda agus faoi phribhléid. Mura seolaí tú, tá cosc iomlán ar aon eolas atá sa ríomhphost seo a úsáid, a scaipeadh, a dháileadh, a fhoilsiú nó a chóipeáil. Má fuair tú an ríomhphost seo trí thimpiste, cuir sin in iúl dúinn láithreach trí ríomhphost a chur chuig  dataprotection@mu.ie  agus scrios an ríomhphost seo ó do chóras.

Tabhair faoi deara go bhfuil Ollscoil Mhá Nuad faoi réir dhlíthe um Shaoráil Faisnéise agus um Chosaint Sonraí. D’fhéadfadh ceangal a bheith orainn ábhar ríomhphoist a nochtadh faoin Acht um Shaoráil Faisnéise 2014, faoin Acht um Chosaint Sonraí 2018 nó faoi GDPR.

Registered charity number 20037130

 

yes, I meant OPCODE7DIR64

On Sun, Jul 12, 2026 at 12:51 AM Victor Lazzarini <000010b17ddd988e-dmarc-request@listserv.heanet.ie> wrote:

OPCODE7DIR64 do you mean? Are you using floats?

Prof. Victor Lazzarini

Maynooth University

Ireland

On 11 Jul 2026, at 20:39, Eduardo Moguillansky <eduardo.moguillansky@gmail.com> wrote:



I see the problem now, csound seems to still look in the default user path for plugins, even if OPCODE7DIR is set. Thanks for the heads-up regarding ABI changes

On Sat, Jul 11, 2026 at 6:17 PM Victor Lazzarini <000010b17ddd988e-dmarc-request@listserv.heanet.ie> wrote:

By the way, the ABI has changed - maybe this is the reason? Was the  binary recompiled and re-linked?

Prof. Victor Lazzarini

Maynooth University

Ireland

On 11 Jul 2026, at 17:12, Victor Lazzarini <000010b17ddd988e-dmarc-request@listserv.heanet.ie> wrote:



midiGlobals is allocated in csoundReset(), it looks like something going very wrong for it to be NULL.

Maybe a backtrace may give some clues.

Prof. Victor Lazzarini

Maynooth University

Ireland

On 11 Jul 2026, at 16:42, Eduardo Moguillansky <eduardo.moguillansky@gmail.com> wrote:



*Warning*

This email originated from outside of Maynooth University's Mail System. Do not reply, click links or open attachments unless you recognise the sender and know the content is safe.

I am getting a confusing crash with latest develop. The csound binary crashes (even if csound is called without any args) within csoundSetExternalMidiErrorStringCallback in csound_rtio.c

void
csoundSetExternalMidiErrorStringCallback(CSOUND *csound,
                                         const char *(*func)(int32_t)) {
  csound->midiGlobals->MidiErrorStringCallback = func;
}

csound->midiGlobals seems to be null, but maybe the problem is that this function is being called at all? 

If I comment the line "csound->midiGlobals..." out, the crash is gone. 

best regards,

Eduardo

The information contained in this email may be confidential and privileged. It is intended only for the addressee(s) stated above. If you are not an addressee any use, dissemination, distribution, publication or copying of the information contained in this email is strictly prohibited. If you have received this email in error, please immediately notify us by email at dataprotection@mu.ie and delete this email from your system.

Please note that Maynooth University is subject to Freedom of Information and Data Protection laws. We may be required to disclose the content of emails under the FOI Act 2014, the Data Protection Act 2018 or GDPR.

Is don seolaí / do na seolaithe thuasluaite amháin an ríomhphost seo. D’fhéadfadh an t-eolas atá ann a bheith rúnda agus faoi phribhléid. Mura seolaí tú, tá cosc iomlán ar aon eolas atá sa ríomhphost seo a úsáid, a scaipeadh, a dháileadh, a fhoilsiú nó a chóipeáil. Má fuair tú an ríomhphost seo trí thimpiste, cuir sin in iúl dúinn láithreach trí ríomhphost a chur chuig  dataprotection@mu.ie  agus scrios an ríomhphost seo ó do chóras.

Tabhair faoi deara go bhfuil Ollscoil Mhá Nuad faoi réir dhlíthe um Shaoráil Faisnéise agus um Chosaint Sonraí. D’fhéadfadh ceangal a bheith orainn ábhar ríomhphoist a nochtadh faoin Acht um Shaoráil Faisnéise 2014, faoin Acht um Chosaint Sonraí 2018 nó faoi GDPR.

Registered charity number 20037130

 

The information contained in this email may be confidential and privileged. It is intended only for the addressee(s) stated above. If you are not an addressee any use, dissemination, distribution, publication or copying of the information contained in this email is strictly prohibited. If you have received this email in error, please immediately notify us by email at dataprotection@mu.ie and delete this email from your system.

Please note that Maynooth University is subject to Freedom of Information and Data Protection laws. We may be required to disclose the content of emails under the FOI Act 2014, the Data Protection Act 2018 or GDPR.

Is don seolaí / do na seolaithe thuasluaite amháin an ríomhphost seo. D’fhéadfadh an t-eolas atá ann a bheith rúnda agus faoi phribhléid. Mura seolaí tú, tá cosc iomlán ar aon eolas atá sa ríomhphost seo a úsáid, a scaipeadh, a dháileadh, a fhoilsiú nó a chóipeáil. Má fuair tú an ríomhphost seo trí thimpiste, cuir sin in iúl dúinn láithreach trí ríomhphost a chur chuig  dataprotection@mu.ie  agus scrios an ríomhphost seo ó do chóras.

Tabhair faoi deara go bhfuil Ollscoil Mhá Nuad faoi réir dhlíthe um Shaoráil Faisnéise agus um Chosaint Sonraí. D’fhéadfadh ceangal a bheith orainn ábhar ríomhphoist a nochtadh faoin Acht um Shaoráil Faisnéise 2014, faoin Acht um Chosaint Sonraí 2018 nó faoi GDPR.

Registered charity number 20037130

 

The information contained in this email may be confidential and privileged. It is intended only for the addressee(s) stated above. If you are not an addressee any use, dissemination, distribution, publication or copying of the information contained in this email is strictly prohibited. If you have received this email in error, please immediately notify us by email at dataprotection@mu.ie and delete this email from your system.

Please note that Maynooth University is subject to Freedom of Information and Data Protection laws. We may be required to disclose the content of emails under the FOI Act 2014, the Data Protection Act 2018 or GDPR.

Is don seolaí / do na seolaithe thuasluaite amháin an ríomhphost seo. D’fhéadfadh an t-eolas atá ann a bheith rúnda agus faoi phribhléid. Mura seolaí tú, tá cosc iomlán ar aon eolas atá sa ríomhphost seo a úsáid, a scaipeadh, a dháileadh, a fhoilsiú nó a chóipeáil. Má fuair tú an ríomhphost seo trí thimpiste, cuir sin in iúl dúinn láithreach trí ríomhphost a chur chuig  dataprotection@mu.ie  agus scrios an ríomhphost seo ó do chóras.

Tabhair faoi deara go bhfuil Ollscoil Mhá Nuad faoi réir dhlíthe um Shaoráil Faisnéise agus um Chosaint Sonraí. D’fhéadfadh ceangal a bheith orainn ábhar ríomhphoist a nochtadh faoin Acht um Shaoráil Faisnéise 2014, faoin Acht um Chosaint Sonraí 2018 nó faoi GDPR.

Registered charity number 20037130

 

Sounds like a good idea.

Prof. Victor Lazzarini

Maynooth University

Ireland

On 12 Jul 2026, at 16:52, Eduardo Moguillansky <eduardo.moguillansky@gmail.com> wrote:



Looking at the code, I don't see a way to disable csound from looking into the user plugins dir. It can be disabled at the cmake level. A flag to disable this would be great. I can make a PR with that change.

On Sun, Jul 12, 2026 at 5:47 PM Eduardo Moguillansky <eduardo.moguillansky@gmail.com> wrote:

yes, I meant OPCODE7DIR64

On Sun, Jul 12, 2026 at 12:51 AM Victor Lazzarini <000010b17ddd988e-dmarc-request@listserv.heanet.ie> wrote:

OPCODE7DIR64 do you mean? Are you using floats?

Prof. Victor Lazzarini

Maynooth University

Ireland

On 11 Jul 2026, at 20:39, Eduardo Moguillansky <eduardo.moguillansky@gmail.com> wrote:



I see the problem now, csound seems to still look in the default user path for plugins, even if OPCODE7DIR is set. Thanks for the heads-up regarding ABI changes

On Sat, Jul 11, 2026 at 6:17 PM Victor Lazzarini <000010b17ddd988e-dmarc-request@listserv.heanet.ie> wrote:

By the way, the ABI has changed - maybe this is the reason? Was the  binary recompiled and re-linked?

Prof. Victor Lazzarini

Maynooth University

Ireland

On 11 Jul 2026, at 17:12, Victor Lazzarini <000010b17ddd988e-dmarc-request@listserv.heanet.ie> wrote:



midiGlobals is allocated in csoundReset(), it looks like something going very wrong for it to be NULL.

Maybe a backtrace may give some clues.

Prof. Victor Lazzarini

Maynooth University

Ireland

On 11 Jul 2026, at 16:42, Eduardo Moguillansky <eduardo.moguillansky@gmail.com> wrote:



*Warning*

This email originated from outside of Maynooth University's Mail System. Do not reply, click links or open attachments unless you recognise the sender and know the content is safe.

I am getting a confusing crash with latest develop. The csound binary crashes (even if csound is called without any args) within csoundSetExternalMidiErrorStringCallback in csound_rtio.c

void
csoundSetExternalMidiErrorStringCallback(CSOUND *csound,
                                         const char *(*func)(int32_t)) {
  csound->midiGlobals->MidiErrorStringCallback = func;
}

csound->midiGlobals seems to be null, but maybe the problem is that this function is being called at all? 

If I comment the line "csound->midiGlobals..." out, the crash is gone. 

best regards,

Eduardo

The information contained in this email may be confidential and privileged. It is intended only for the addressee(s) stated above. If you are not an addressee any use, dissemination, distribution, publication or copying of the information contained in this email is strictly prohibited. If you have received this email in error, please immediately notify us by email at dataprotection@mu.ie and delete this email from your system.

Please note that Maynooth University is subject to Freedom of Information and Data Protection laws. We may be required to disclose the content of emails under the FOI Act 2014, the Data Protection Act 2018 or GDPR.

Is don seolaí / do na seolaithe thuasluaite amháin an ríomhphost seo. D’fhéadfadh an t-eolas atá ann a bheith rúnda agus faoi phribhléid. Mura seolaí tú, tá cosc iomlán ar aon eolas atá sa ríomhphost seo a úsáid, a scaipeadh, a dháileadh, a fhoilsiú nó a chóipeáil. Má fuair tú an ríomhphost seo trí thimpiste, cuir sin in iúl dúinn láithreach trí ríomhphost a chur chuig  dataprotection@mu.ie  agus scrios an ríomhphost seo ó do chóras.

Tabhair faoi deara go bhfuil Ollscoil Mhá Nuad faoi réir dhlíthe um Shaoráil Faisnéise agus um Chosaint Sonraí. D’fhéadfadh ceangal a bheith orainn ábhar ríomhphoist a nochtadh faoin Acht um Shaoráil Faisnéise 2014, faoin Acht um Chosaint Sonraí 2018 nó faoi GDPR.

Registered charity number 20037130

 

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Please note that Maynooth University is subject to Freedom of Information and Data Protection laws. We may be required to disclose the content of emails under the FOI Act 2014, the Data Protection Act 2018 or GDPR.

Is don seolaí / do na seolaithe thuasluaite amháin an ríomhphost seo. D’fhéadfadh an t-eolas atá ann a bheith rúnda agus faoi phribhléid. Mura seolaí tú, tá cosc iomlán ar aon eolas atá sa ríomhphost seo a úsáid, a scaipeadh, a dháileadh, a fhoilsiú nó a chóipeáil. Má fuair tú an ríomhphost seo trí thimpiste, cuir sin in iúl dúinn láithreach trí ríomhphost a chur chuig  dataprotection@mu.ie  agus scrios an ríomhphost seo ó do chóras.

Tabhair faoi deara go bhfuil Ollscoil Mhá Nuad faoi réir dhlíthe um Shaoráil Faisnéise agus um Chosaint Sonraí. D’fhéadfadh ceangal a bheith orainn ábhar ríomhphoist a nochtadh faoin Acht um Shaoráil Faisnéise 2014, faoin Acht um Chosaint Sonraí 2018 nó faoi GDPR.

Registered charity number 20037130

 

The information contained in this email may be confidential and privileged. It is intended only for the addressee(s) stated above. If you are not an addressee any use, dissemination, distribution, publication or copying of the information contained in this email is strictly prohibited. If you have received this email in error, please immediately notify us by email at dataprotection@mu.ie and delete this email from your system.

Please note that Maynooth University is subject to Freedom of Information and Data Protection laws. We may be required to disclose the content of emails under the FOI Act 2014, the Data Protection Act 2018 or GDPR.

Is don seolaí / do na seolaithe thuasluaite amháin an ríomhphost seo. D’fhéadfadh an t-eolas atá ann a bheith rúnda agus faoi phribhléid. Mura seolaí tú, tá cosc iomlán ar aon eolas atá sa ríomhphost seo a úsáid, a scaipeadh, a dháileadh, a fhoilsiú nó a chóipeáil. Má fuair tú an ríomhphost seo trí thimpiste, cuir sin in iúl dúinn láithreach trí ríomhphost a chur chuig  dataprotection@mu.ie  agus scrios an ríomhphost seo ó do chóras.

Tabhair faoi deara go bhfuil Ollscoil Mhá Nuad faoi réir dhlíthe um Shaoráil Faisnéise agus um Chosaint Sonraí. D’fhéadfadh ceangal a bheith orainn ábhar ríomhphoist a nochtadh faoin Acht um Shaoráil Faisnéise 2014, faoin Acht um Chosaint Sonraí 2018 nó faoi GDPR.

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Is don seolaí / do na seolaithe thuasluaite amháin an ríomhphost seo. D’fhéadfadh an t-eolas atá ann a bheith rúnda agus faoi phribhléid. Mura seolaí tú, tá cosc iomlán ar aon eolas atá sa ríomhphost seo a úsáid, a scaipeadh, a dháileadh, a fhoilsiú nó a chóipeáil. Má fuair tú an ríomhphost seo trí thimpiste, cuir sin in iúl dúinn láithreach trí ríomhphost a chur chuig  dataprotection@mu.ie  agus scrios an ríomhphost seo ó do chóras.

Tabhair faoi deara go bhfuil Ollscoil Mhá Nuad faoi réir dhlíthe um Shaoráil Faisnéise agus um Chosaint Sonraí. D’fhéadfadh ceangal a bheith orainn ábhar ríomhphoist a nochtadh faoin Acht um Shaoráil Faisnéise 2014, faoin Acht um Chosaint Sonraí 2018 nó faoi GDPR.

Registered charity number 20037130

 

csoundCreate() (via csoundReset() ) needs to load all plugins I think so that the compiler can see the opcodes. It may be possible to move it to the first compilation call, but it's a bit doubtful I guess since this may have lots of implications we do not anticipate.

Being close to 7.0 release, I think the case is weak for attempting this change.

We should deal with this using versioning, which works for instance now to prevent 7.0 loading 6.18 plugins. 

The problem you encountered is because everything is beta now and we are not bumping versions on ABI changes. But we should make sure the versioning mechanism works when we move to full release.

Prof. Victor Lazzarini

Maynooth University

Ireland

On 12 Jul 2026, at 20:55, Eduardo Moguillansky <eduardo.moguillansky@gmail.com> wrote:



This proved to be trickier than I thought, since plugins are loaded before options are processed: setting a flag to modify this behaviour comes too late. A solution would be to split loading of plugins from instance creation (csoundCreate would not load any modules). Plugins need to be loaded for all the cases where a command line flag results in csound showing some information (output devices, system sr, opcodes) and exiting.   

Doing it the split would be good in the sense that, at the moment, if there is any architecture mismatch (plugins are built with a different ABI than csound), csound just crushes even before being able to do anything like "csound --version" or "csound --help". 

Any thoughts?

On Sun, Jul 12, 2026 at 6:08 PM Victor Lazzarini <000010b17ddd988e-dmarc-request@listserv.heanet.ie> wrote:

Sounds like a good idea.

Prof. Victor Lazzarini

Maynooth University

Ireland

On 12 Jul 2026, at 16:52, Eduardo Moguillansky <eduardo.moguillansky@gmail.com> wrote:



Looking at the code, I don't see a way to disable csound from looking into the user plugins dir. It can be disabled at the cmake level. A flag to disable this would be great. I can make a PR with that change.

On Sun, Jul 12, 2026 at 5:47 PM Eduardo Moguillansky <eduardo.moguillansky@gmail.com> wrote:

yes, I meant OPCODE7DIR64

On Sun, Jul 12, 2026 at 12:51 AM Victor Lazzarini <000010b17ddd988e-dmarc-request@listserv.heanet.ie> wrote:

OPCODE7DIR64 do you mean? Are you using floats?

Prof. Victor Lazzarini

Maynooth University

Ireland

On 11 Jul 2026, at 20:39, Eduardo Moguillansky <eduardo.moguillansky@gmail.com> wrote:



I see the problem now, csound seems to still look in the default user path for plugins, even if OPCODE7DIR is set. Thanks for the heads-up regarding ABI changes

On Sat, Jul 11, 2026 at 6:17 PM Victor Lazzarini <000010b17ddd988e-dmarc-request@listserv.heanet.ie> wrote:

By the way, the ABI has changed - maybe this is the reason? Was the  binary recompiled and re-linked?

Prof. Victor Lazzarini

Maynooth University

Ireland

On 11 Jul 2026, at 17:12, Victor Lazzarini <000010b17ddd988e-dmarc-request@listserv.heanet.ie> wrote:



midiGlobals is allocated in csoundReset(), it looks like something going very wrong for it to be NULL.

Maybe a backtrace may give some clues.

Prof. Victor Lazzarini

Maynooth University

Ireland

On 11 Jul 2026, at 16:42, Eduardo Moguillansky <eduardo.moguillansky@gmail.com> wrote:



*Warning*

This email originated from outside of Maynooth University's Mail System. Do not reply, click links or open attachments unless you recognise the sender and know the content is safe.

I am getting a confusing crash with latest develop. The csound binary crashes (even if csound is called without any args) within csoundSetExternalMidiErrorStringCallback in csound_rtio.c

void
csoundSetExternalMidiErrorStringCallback(CSOUND *csound,
                                         const char *(*func)(int32_t)) {
  csound->midiGlobals->MidiErrorStringCallback = func;
}

csound->midiGlobals seems to be null, but maybe the problem is that this function is being called at all? 

If I comment the line "csound->midiGlobals..." out, the crash is gone. 

best regards,

Eduardo

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