[Ada] Simplify regular expression that matches 8 consecutive digits

[Ada] Simplify regular expression that matches 8 consecutive digits

[Pierre-Marie de Rodat]

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Makefile cleanup; behaviour is unaffected.

Tested on x86_64-pc-linux-gnu, committed on trunk

gcc/ada/

	* gcc-interface/Make-lang.in (ada/generated/gnatvsn.ads):
	Simplify regular expression. The "interval expression",
	i.e. \{8\} is part of the POSIX regular expressions, so it
	should not be a problem for modern implementations of sed.

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diff --git a/gcc/ada/gcc-interface/Make-lang.in b/gcc/ada/gcc-interface/Make-lang.in
--- a/gcc/ada/gcc-interface/Make-lang.in
+++ b/gcc/ada/gcc-interface/Make-lang.in
@@ -1158,7 +1158,7 @@ ada/generated/gnatvsn.ads: ada/gnatvsn.ads BASE-VER ada/GNAT_DATE
 	s=`cat $(srcdir)/BASE-VER | sed -e "s/\([0-9]*\)\.\([0-9]*\)\..*/-\1\2/g"`; \
 	d=`if test -f $(srcdir)/ada/GNAT_DATE; then \
            cat $(srcdir)/ada/GNAT_DATE; else date +%Y%m%d; fi`; \
-	cat $< | sed -e "/Version/s/(\([0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]\).*)/($$d$$s)/g" >$@
+	cat $< | sed -e "/Version/s/(\([0-9]\{8\}\).*)/($$d$$s)/g" >$@
 
 ada/gnatvsn.o : ada/gnatvsn.adb ada/generated/gnatvsn.ads
 	$(CC) -c $(ALL_ADAFLAGS) $(ADA_INCLUDES) $< $(ADA_OUTPUT_OPTION)