Disabled optimization leads to restarting

[pjc30943]

When adding --optimize=no-optimize to a .pjt file for one of my applications on a 1280n, the system just keeps restarting:

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ZBasic v2.6
ZBasic v2.6
ZBasic v2.6
ZBasic v2.6
ZBasic v2.6

When optimization is enabled, the startup sequence is correct and no longer gets stuck.
I've doubled stack sizes of the two tasks running, but there is no change. Anyone experience a similar occurance?

EDIT:
With other code, no-optimization leads to garbled output:

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ZBasic v2.6
ĦFć…¦„„҇‡bĦF„…¦„„҇‡bĦF„¤æää¤bc`Zbç„‚„҇§…ƆEƒç†‚„Å÷ää¤ÅÆÀ¤bĦ&„¤æä䄆Eã‡$„¤æä䤆EóbççççççççççGƒ$„…æ… §…†„b„„B
¡ç‡„„Dƒ„„£„„†…Ä„„DãççççççççççbbÀ…†Æ§¤¦„

whereas normal, optimized compilation leads to correct outputs.

From the documentation on compiler options, I do not see why these would arise from turning off all optimization, unless '-constant-folding' is required to init stacks with constant sizes, etc.