[Tinycc-devel] tinycc fails to build mksh because of bound check

[Thomas Preud'homme]

Hello everybody,

I'm sorry but this mail is to make another bug report. I've been notified a 
bug about tcc failing to build mksh some time ago [1]. I wanted to fix the bug 
myself, or at least find the bug to avoid putting all the burden on you.

I first thought it was related to link failure of global variable due to a 
misuse of gdb (I performed a print sys_siglist instead of a print &sys_siglist 
which gave me 0). But finally, I found it was related to bound check code. 
Indeed, when disabling the code the compilation works like a charm. There was 
a lot of bound_add_ptr and other functions related to bound check. I guess one 
of the function return a bad result or simply do something wrong by accessing 
a zone out of bound (which would be quite paradoxal).

Anyway, I feel I won't be able to help much on this problem but I'll try to 
take a look maybe next WE. For this WE I'll try to handle the aliasing of math 
functions [2] and if it's quick to fix I'll also take a look to the function 
array problem [3].

Best regards,

Thomas Preud'homme

[1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=537622
[2] http://lists.nongnu.org/archive/html/tinycc-devel/2010-08/msg00039.html
[3] http://lists.nongnu.org/archive/html/tinycc-devel/2010-08/msg00050.html

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