10000 v0.9.28 - Leftshift of negative value · Issue #489 · vlm/asn1c · GitHub

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v0.9.28 - Leftshift of negative value #489

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TedLyngmo opened this issue Nov 8, 2023 · 0 comments

TedLyngmo commented

•

asn_INTEGER2long() sets a long to -1 and leftshifts:

        long l;

        // ...

	if((*b >> 7)) l = -1; else l = 0;

	/* Conversion engine */
	for(; b < end; b++)
		l = (l << 8) | *b;

This means we can't turn on UBsan in our gate. This makes UBsan happy:

https://github.com/TedLyngmo/asn1c/tree/v0.9.28-maint-1

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