PR24411, Division is not accepted in MEMORY length expression

[Alan Modra <amodra@gmail.com>]

Let's hope no one has section names starting with '/' in scripts.  If
they do, this change to fix parsing of '/' in expressiongs will break
their project.

	PR 24411
	ldlex.l (SYMBOLNAMECHAR1): Don't match '/'.
	(<EXPRESSION>"/DISCARD/"): New.

diff --git a/ld/ldlex.l b/ld/ldlex.l
index 6e73a7fb65..c2abc59571 100644
--- a/ld/ldlex.l
+++ b/ld/ldlex.l
@@ -96,7 +96,7 @@ FILENAMECHAR	[_a-zA-Z0-9\/\.\\\$\~\-\+\:\[\]\,\=]
 NOCFILENAMECHAR	[_a-zA-Z0-9\/\.\\\$\~\-\+\:\[\]]
 SYMBOLNAMECHAR  [_a-zA-Z0-9\/\.\\\$\~]
 FILENAMECHAR1	[_a-zA-Z\/\.\\\$\~]
-SYMBOLNAMECHAR1	[_a-zA-Z\/\.\\\$]
+SYMBOLNAMECHAR1	[_a-zA-Z\.\\\$]
 WHITE		[ \t\n\r]+
 
 V_TAG [.$_a-zA-Z][._a-zA-Z0-9]*
@@ -388,6 +388,10 @@ V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)*
 				  yylval.name = xstrdup (yytext);
 				  return NAME;
 				}
+<EXPRESSION>"/DISCARD/"		{
+				  yylval.name = xstrdup (yytext);
+				  return NAME;
+				}
 <EXPRESSION>"-l"{NOCFILENAMECHAR}+ {
 				  yylval.name = xstrdup (yytext + 2);
 				  return LNAME;

-- 
Alan Modra
Australia Development Lab, IBM