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Old 2022-05-06, 06:55   #1
mgeisert
 
"Mark"
Jun 2019
Los Angeles, US

38 Posts
Default ASSERT_ALWAYS failing

Hi folks,
I'm running ecm-7.0.4 with gmp-6.2.1 on Windows 10 64-bit via Cygwin. Self-compiled ecm and gmp, details on request. I've simplified the reproducer as much as I can to get the following recipe:
ecmfactor -t 2 C1133 1e2
which reports an assertion failure on schoen_strass.c:91. C1133 is the famous unresolved portion of the 12th Fermat number. An odd thing is that specifying -t 1 works fine; it's that more than one thread provokes the error.

Has this error been reported before and/or is there a known fix?
Thanks much,

..mark
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