I have this weird problem: inside the while loop, ERR_COUNT and WAR_COUNT variables are modified by the script, but outside the loop, they still return the initial value, 0. Don't know what to do...
PLEASE HELP!!!!!


function compile
{
declare -i ERR_COUNT=0
declare -i WAR_COUNT=0
declare LINE
declare -i LEN
declare MESSAGE

gcc "$DEST_DIR/$IDEST_DIR/tema.c" -o "$DEST_DIR/$IDEST_DIR/tema" -O2 -Wall -lm -pedantic 2> "$DEST_DIR/$IDEST_DIR/rez.txt"
cat "$DEST_DIR/$IDEST_DIR/rez.txt" | while read LINE;
do
LEN=${#LINE};
LINE="${LINE#*warning}";
if [ ${#LINE} -ne $LEN ]; then
WAR_COUNT+=1;
else
LINE="${LINE#*error}";
if [ ${#LINE} -ne $LEN ]; then
ERR_COUNT+=1;
fi
fi
echo $ERR_COUNT $WAR_COUNT
done

echo $ERR_COUNT $WAR_COUNT
}

OUTPUT EXAMPLE:
1 0
2 0
2 1
2 2
2 3
0 0 #!!!!!!!!!!

Use the Korn shell, bash is picking the arguably wrong side of a pipe as a background process.

Alternatively, you can just redirect the rez.txt file to the while command, instead of using an unnecessary cat.

You can make this work with file descriptors or as jlliagre suggests redirecting rez.txt as input to the while. Here is a portion of your script with the file descriptor statements added.
The statement exec 3<$DEST_DIR/$IDEST_DIR/rez.txt opens file descriptor 3 for reading from the rez.txt file.

The statement while read -u3 LINE; uses the file pointed to by file descriptor 3 as input to read on the while statement.

The statement exec 3<&- closes file descriptor 3.

Bill

A custom file descriptor is not needed in ZT13 case, so the redirection can be very much simplified this way:

Thank you folks