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cmd/gc: print expression in 'duplicate case in switch' error 

The line number alone does not help when the line is
case '~', '*', '(', ')', '[', ']', '{', '}', '?', ':', ';', ',', '*', '%', '^', '!', '=', '<', '>', '+', '-', '&', '|':

R=ken2
CC=golang-dev
https://golang.org/cl/13431046
This commit is contained in:
Russ Cox 2013-09-20 15:15:43 -04:00
parent 551ada4742
commit 36f8480965
1 changed files with 2 additions and 2 deletions
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4
src/cmd/gc/swt.c
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@ -415,7 +415,7 @@ mkcaselist(Node *sw, int arg)
break;
if(!eqtype(c1->node->left->type, c2->node->left->type))
continue;
yyerrorl(c2->node->lineno, "duplicate case in switch\n\tprevious case at %L", c1->node->lineno);
yyerrorl(c2->node->lineno, "duplicate case %T in type switch\n\tprevious case at %L", c2->node->left->type, c1->node->lineno);
}
}
break;
@ -427,7 +427,7 @@ mkcaselist(Node *sw, int arg)
if(exprcmp(c1, c1->link) != 0)
continue;
setlineno(c1->link->node);
yyerror("duplicate case in switch\n\tprevious case at %L", c1->node->lineno);
yyerror("duplicate case %N in switch\n\tprevious case at %L", c1->node->left, c1->node->lineno);
}
break;
}