Crash while copying and pasting a range of cells, possibly involving conditional formating and formula

Hi

i encountered a crash while trying to duplicate a sheet from a large document. I managed to reproduce it to a minimal one - enclosed.

The steps to reproduce are simple :

• select the column A
• copy it : Ctrl-C
• open a new file : Ctrl-N
• paste it to the new file : Ctrl-V The behaviour is the same if the paste is in another sheet of the original file.

Some investigations i made :

• there are some conditional formatting in column A. They are dependent on a formula

<gnm:Expression0>date(year(now()),month(now()),1)</gnm:Expression0>

if i remove the conditional formatting gnumeric no longer crash with the above steps

• There are several StyleRegion in the gnumeric file and only one conditional format display in gnumeric file. Selecting only one cell dont cause a crash. I don't know if it's relevant to the issue.

• when run under gdb, i get the following results after the crash

0x00007f002e5e2083 in gnm_style_conditions_set_pos (sc=<optimized out>, pos=0xcc61fa0) at style-conditions.c:1140
1140            for (ui = 0; ui < (ga ? ga->len : 0u); ui++) {

I am using a gnumeric version compiled from current sources but i reproduced it with an official one provided by my distrib :

$ cat /etc/release 
Mageia release 9 (Cauldron) for x86_64
$ rpm -q -f /usr/bin/gnumeric 
gnumeric-1.12.50-1.mga9

thanks

work.gnumeric