[PATCH, GCC] Deal with singular sentences in builtin-sprintf-warn-1.c regex

[Thomas Preudhomme]

Hi,

New builtin-sprintf-warn-1.c testcase contains a few regex of the form "\[0-9\]+ 
bytes" or ". bytes". This does not account for the case where the number of byte 
is 0 in which case byte would be in the singular form. This caused a FAIL on 
arm-none-eabi targets. This patch makes the s optional in all cases where the 
number of bytes is unknown.

I did not commit this fix as obvious as people might want to only do the changes 
for lines where the number of bytes *could* be 0 so I prefer to get review.

ChangeLog entry is as follows:

*** gcc/testsuite/ChangeLog ***

2016-09-23  Thomas Preud'homme  <thomas.preudho...@arm.com>

        * gcc.dg/tree-ssa/builtin-sprintf-warn-1.c: Adjust regex to accept
        singular form of byte when quantity is unknown.


Is this ok for trunk?

Best regards,

Thomas