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Remove parentheses in struct definitions

They are totally unneeded because we can add the member to the last struct/union
defined.

--- a/cc1/code.c

+++ b/cc1/code.c

@@ -263,11 +263,10 @@

 		emitletter(tp);

 		if ((tag = tp->tag->name) != NULL)

 			printf("\t%s", tag);

-		puts("\n(");

+		putchar('\n');

 		n = tp->n.elem;

 		for (sp = tp->p.fields; n-- > 0; ++sp)

 			emit(ODECL, *sp);

-		puts(")");

 		break;

 	case FTN:

 		emitletter(tp);

--- a/cc1/ir.md

+++ b/cc1/ir.md

@@ -65,10 +65,8 @@

 ### Type declarations ###

 Some declarations need a previous declaration of the types involved

-in the variable declaration. In the case of structs and unions

-a '(' means that begins a list of members of the last type declaration

-(the front end must ensure that '(; only can follow struct/union

-declarations).

+in the variable declaration. In the case of members, they form part

+of the last struct or union declared.

 For example the next code:

@@ -80,10 +78,8 @@

 will generate the next output:

 > S2	foo

-> (

 > M3	I	i

 > M4	W	c

-> )

 > G5	S2	var1

@@ -351,8 +347,6 @@

 * T -- local (function scopped static variable)

 * M -- member (struct/union member)

 * L -- label

-* ( -- begin of struct/enum definition

-* ) -- end of struct/enum definition

 * { -- end of function body

 * } -- end of fucntion body

 * - -- end of function parameters

--- a/cc1/tests/test002.c

+++ b/cc1/tests/test002.c

@@ -8,10 +8,8 @@

 {

 -

 S2	S

-(

 M5	I	i

 M6	P	next

-)

 A2	S2	y

 A3	P	p

 A4	N	n

--- a/cc1/tests/test015.c

+++ b/cc1/tests/test015.c

@@ -2,20 +2,14 @@

 name: TEST015

 description: Stress namespace mechanism

 output:

-test015.c:58: error: label 's' already defined

+test015.c:52: error: label 's' already defined

 S8	s2

-(

 M9	I	s

-)

 S5	s1

-(

 M6	I	s

 M10	S8	s1

-)

 S2	s

-(

 M11	S5	s

-)

 G12	S2	s2

 F1

 G13	F1	main

--- a/cc1/tests/test017.c

+++ b/cc1/tests/test017.c

@@ -7,15 +7,11 @@

 {

 -

 S2	s1

-(

 M3	I	y

 M4	I	z

-)

 A2	S2	nested

 S6	s2

-(

 M8	P	p

-)

 A3	S6	v

 	A3	M8	.P	A2	'P	:P

 	A3	M8	.P	@S2	M3	.I	#I1	:I