Hello.
In the function idna_to_ascii_4i() in lib/idna.c, at the end of step 2, the call src = "" -1, NULL) may result in a NULL return. This needs to be checked, and if that's the case, p needs to be freed and the function should return with an #Idna_rc error code. IMHO, NULL return occurs only in the case of a malloc fail (due to g_malloc() in the function g_utf8_to_ucs4_fast), so the error code should be IDNA_MALLOC_ERROR.
Please check the attached patch file.
Yours sincerely,
Sarat Addepalli.
idna.patch
Description: Binary data
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