Inconsistent storage error during compilation

[RajaSrinivasan]

One of my projects is not building - randomly.

Error message:

Compile
[Ada] cvars.adb
+===========================GNAT BUG DETECTED==============================+
| 14.2.0 (aarch64-apple-darwin23) Storage_Error stack overflow |
| Error detected at cvars.adb:9:5 |
| Compiling /Users/rajasrinivasan/Prj/GitLab/toolkit/examples/cvar/src/cvars.adb|
| Please submit a bug report; see https://gcc.gnu.org/bugs/ . |
| Use a subject line meaningful to you and us to track the bug. |
| Include the entire contents of this bug box in the report. |
| Include the exact command that you entered. |
| Also include sources listed below. |
+==========================================================================+

Please include these source files with error report

identical files will fail randomly. The file - package and spec look like this:

--codemd: begin segment=Variables caption=declaration
with critical_float ;
package cvars is
tempSetpoint : critical_float.Variable_Type ;
pressureSetpoint : critical_float.Variable_Type ;
function allocator( secondary : boolean ) return access Float ;
end cvars ;
--codemd: end

-- codemd: begin segment=Implement caption=Implementation
package body cvars is
function allocator( secondary : boolean ) return access Float is
begin
return new Float ;
end allocator ;
begin
critical_float.SetAllocators( allocator'access );
end cvars ;
--codemd: end

I can provide the package "Critical_float" WHICH IS in a different project - if it will help.

Project builds on linux VMs and Docker - reliably. Hence this "ISSUE"
any clues?

Srini

[simonjwright]

What version of macOS?

Please include these source files with error report

Wasn’t there a list of source files? If so, please provide them (you can paste a zip file into a comment here). If not - that’s another question.

I can provide the package "Critical_float" WHICH IS in a different project - if it will help.

It would be a start. Without it there is nothing that I can do. And a complete set of source files would be better.

[RajaSrinivasan]

Simon Macos. Sequoia 15.2 The error message contained the following in addition: Please include these source files with error report Note that list may not be accurate in some cases, so please double check that the problem can still be reproduced with the set of files listed. Consider also -gnatd.n switch (see debug.adb). this is probably rather difficult since i ran into this every other build today but not earlier. i will be collecting all the files and upload but at this stage, this being a sporadic issue, not too hopeful it can be replaced. i will try to add the -gnatd.n switch to this unit and see if anything pops up. thanks for your considerations. regards, Srini

…

On Wed, Jan 29, 2025 at 10:32 AM Simon Wright ***@***.***> wrote: What version of macOS? Please include these source files with error report Wasn’t there a list of source files? If so, please provide them (you can paste a zip file into a comment here). If not - that’s another question. I can provide the package "Critical_float" WHICH IS in a different project - if it will help. It would be a start. Without it there is *nothing* that I can do. And a complete set of source files would be better. — Reply to this email directly, view it on GitHub <#29 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACZJWNBSDYEAYFWR7QCBSBL2NE3ERAVCNFSM6AAAAABWDWB5ECVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMMRSG44DANJVGU> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[RajaSrinivasan]

cvar2.zip

this project build successfully first. I created the zip file right after a failed build.

Hope you are able to identify what is going on. Regards, Srini

[simonjwright]

The first time I built it, it failed; thereafter, no problems. This morning, the first build failed:

alr clean; alr build
Note: Building cvar=0.1.0-dev/cvar.gpr...
Compile
   [Ada]          cvar.adb
cvar.adb:1:16: (style) bad casing of "Text_IO" declared at a-textio.ads:58 [-gnatyr]
cvar.adb:1:33: (style) bad casing of "Text_IO" declared at a-textio.ads:58 [-gnatyr]
cvar.adb:2:03: (style) two spaces required [-gnatyc]
cvar.adb:3:20: (style) space not allowed [-gnatyt]
cvar.adb:4:11: (style) space not allowed [-gnatyt]
cvar.adb:8:22: (style) space required [-gnatyt]
cvar.adb:9:22: (style) space required [-gnatyt]
cvar.adb:10:07: (style) space required [-gnatyt]
cvar.adb:11:07: (style) space required [-gnatyt]
cvar.adb:13:03: (style) two spaces required [-gnatyc]
cvar.adb:14:01: (style) blank line not allowed at end of file [-gnatyu]
   [Ada]          critical_float.ads
   [Ada]          cvars.adb
+===========================GNAT BUG DETECTED==============================+
| 14.2.0 (aarch64-apple-darwin23) Storage_Error stack overflow             |
| Error detected at cvars.adb:9:5                                          |
| Compiling /Users/simon/Developer/gcc/distributing-gcc/29/cvar2/src/cvars.adb|
| Please submit a bug report; see https://gcc.gnu.org/bugs/ .              |
| Use a subject line meaningful to you and us to track the bug.            |
| Include the entire contents of this bug box in the report.               |
| Include the exact command that you entered.                              |
| Also include sources listed below.                                       |
+==========================================================================+

Please include these source files with error report
Note that list may not be accurate in some cases,
so please double check that the problem can still
be reproduced with the set of files listed.
Consider also -gnatd.n switch (see debug.adb).

/Users/simon/Developer/gcc/distributing-gcc/29/cvar2/src/cvars.adb

:1:04: (style) space required [-gnatyt]
:3:05: (style) bad indentation [-gnaty0]
:4:05: (style) bad indentation [-gnaty0]
:5:09: (style) bad indentation [-gnaty0]
:6:05: (style) bad indentation [-gnaty0]
:8:05: (style) bad indentation [-gnaty0]
:9:10: (style) space not allowed [-gnatyt]
compilation abandoned
critical_float.ads:1:03: (style) two spaces required [-gnatyc]
critical_float.ads:5:03: (style) two spaces required [-gnatyc]

   compilation of cvars.adb failed

gprbuild: *** compilation phase failed
ERROR: Command ["gprbuild", "-s", "-j0", "-p", "-P", "/Users/simon/Developer/gcc/distributing-gcc/29/cvar2/cvar.gpr"] exited with code 4
ERROR: Compilation failed.

The second and third times, similar (not identical) results. Fourth time, compiled OK. Fifth time, error, this time at cvars.ads:7:5

I ran gnatpp -P cvar.gpr, which got rid of most of those style warnings, and didn’t get further failures (what’s codemd? If you make the comments --#codemd you don’t get the warnings).

I restored the source; occasional failures.

I used alr build --release (mainly so those warnings didn’t get reported): successful builds.

alr build --development: occasional failures.

I’ve never seen the compiler fail like this, but then I have a compulsion to get clean compilations whenever possible, so I don’t get that many style warnings. If you really want to suppress all style warnings, alr build -- -gnatyN.

[simonjwright]

Try building with e.g. alr build -- -gnaty-c (suppress the -gnatyc switch (check comment format (two spaces))).

[RajaSrinivasan]

Simon Appreciate your analysis. I didnt even know where to start! codemd (Code markdown) is the tool i built t produce code examples. Really interesting these comment lines may have an impact. I use codemd extensively in my entire "book" and not run into this before. Perhaps because most of the time, I like to eliminate style related warnings preferring to finally pretty print! Excellent suggestions. WIll implement. Hopefully this will help me reach my first major milestone. Regards, Srini

…

On Fri, Jan 31, 2025 at 4:44 AM Simon Wright ***@***.***> wrote: Try building with e.g. alr build -- -gnaty-c (suppress the -gnatyc switch (check comment format (two spaces))). — Reply to this email directly, view it on GitHub <#29 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACZJWNDZHJOCYTADV4R3EGL2NOD4ZAVCNFSM6AAAAABWDWB5ECVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMMRXGUYTSNZZGA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[simonjwright]

Appreciate your analysis. I didnt even know where to start!

"Analysis" is a big word for "poking at the problem until something seems to make it better"!

I don’t know whether this is an aarch64 problem or applies to x86_64 as well .. it’s certainly still present in GCC 15.0.1.

I’ll leave this issue open for the moment, in case I find something repeatable enough to raise a GCC bug report.

[simonjwright]

See GCC PR 118782.

[RajaSrinivasan]

Simon Thanks for keeping me in the loop. Regards, Srini

…

On Fri, Feb 7, 2025 at 12:34 PM Simon Wright ***@***.***> wrote: See GCC PR 118782 <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118782>. — Reply to this email directly, view it on GitHub <#29 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACZJWNCDKG6SAFLOCQHHOY32OTVCJAVCNFSM6AAAAABWDWB5ECVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMNBTGU3DMMBVGA> . You are receiving this because you authored the thread.Message ID: ***@***.***>