[fpc-devel] FPC Android crashes in Tegra CPUs

Florian Klämpfl florian at freepascal.org
Sat Dec 20 16:02:33 CET 2014

Am 20.12.2014 um 15:45 schrieb Sergio Flores:
> I've recently discovered that some fpc math functions crash on Tegra CPUs (ARM7/Android), even when
> called with valid arguments.
> Anyone has a clue what could cause this or possible workarounds?
> Eg: Calling lnxp1(x) with x>1 results in a SIGILL crash.

Can you provide a stack trace?

> I did my own naive implementation of this function in pure pascal without calling any FPC math
> function, and it fixed the problem.
> However currently I found another crash in the same hardware that points to fpc_ln_real function,
> and don't really want to reimplement lots of math functions.
> Probably any function related to logaritms suffers from this,.
> Notes - I'm compiling with FPC 2.7.1 (from trunk, but not most recent, I probably compiled it 2 or 3
> months ago). 

First trying with current trunk would be helpful.

> Optimizations are off, due to them being currently broken in ARM7.


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