wcc: delete unused warning counters and ww err twin

cmd/wcc/err.c

@@ -1,13 +1,11 @@
 /*
- * Plan 9 style: short, no levels beyond fatal/error/warn, no colour.
+ * Plan 9 style: short, no levels beyond fatal/error, no colour.
  */
 #include "ww.h"
 #include <stdlib.h>
 #include <string.h>
 
 Pos	noPos = { "<none>", 0, 0 };
-int	nerrors;
-int	nwarnings;
 FILE	*errout;	/* set by main; defaults to stderr */
 
 static FILE *
@@ -52,19 +50,4 @@ errorf(Pos p, const char *fmt, ...)
 	vfprintf(f, fmt, ap);
 	va_end(ap);
 	fprintf(f, "\n");
-	nerrors++;
-}
-
-void
-warnf(Pos p, const char *fmt, ...)
-{
-	FILE *f = out();
-	va_list ap;
-	prefix(p);
-	fprintf(f, "warning: ");
-	va_start(ap, fmt);
-	vfprintf(f, fmt, ap);
-	va_end(ap);
-	fprintf(f, "\n");
-	nwarnings++;
 }

cmd/wcc/parse.c

@@ -210,9 +210,8 @@ parsetype(Parser *p)
 		if (p->cur.kind == TK_AT) {
 			advance(p);
 			const char *an = expectident(p);
-			/* p->errs gates the build (cmd/w6c/main.c:82);
-			 * nerrors is advisory-only, so an errorf on a
-			 * clean-recovery path must bump p->errs itself. */
+			/* errorf only reports; p->errs gates the build
+			 * (cmd/w6c/main.c:82). */
 			if (strcmp(an, "packed") != 0) {
 				errorf(p->cur.pos,
 				    "unknown struct attribute '@%s'", an);

cmd/wcc/ww.h

@@ -58,13 +58,10 @@ struct Pos {
 };
 
 extern Pos	noPos;
-extern int	nerrors;
-extern int	nwarnings;
 extern FILE	*errout;
 
 void	fatal(const char*, ...) __attribute__((noreturn, format(printf, 1, 2)));
 void	errorf(Pos, const char*, ...) __attribute__((format(printf, 2, 3)));
-void	warnf(Pos, const char*, ...) __attribute__((format(printf, 2, 3)));
 
 #define nelem(a)	((sizeof(a) / sizeof((a)[0])))
 

selfhost/cmd/wcc/check.ww

@@ -40,8 +40,7 @@ type checker = struct {
 // diagnostics. Tool-local (NOT a lib wrapper): messages are built from
 // many fragments and we route through os.write to avoid libc stdio.
 // .len replaces the error-prone hand-counted byte literals these sites
-// carried. Lives here (not err.ww) because the selfhost build pulls
-// check.ww but not err.ww (which ports err.c for the C-driven path).
+// carried.
 fn cerr(m: str) void = {
 	os.write(2, m.ptr, m.len: u64);
 };

selfhost/cmd/wcc/err.ww

@@ -1,38 +0,0 @@
-// Port of cmd/wcc/err.c. Plan 9 style: short, no levels beyond
-// fatal/error/warn. Output goes through os.write so we don't pull in
-// libc stdio.
-
-package wcc;
-
-import os;
-import fmt;
-
-type pos = struct {
-	file: str,
-	line: i32,
-	col:  i32,
-};
-
-let nerrors:   i32 = 0;
-let nwarnings: i32 = 0;
-
-export fn fatal(msg: str) void = {
-	fmt.errorln(msg);
-	os.exit(1);
-};
-
-export fn errorf(p: pos, msg: str) void = {
-	os.write(2, p.file.ptr, p.file.len: u64);
-	os.write(2, ": error: ".ptr, 9u64);
-	os.write(2, msg.ptr, msg.len: u64);
-	os.write(2, "\n".ptr, 1u64);
-	nerrors += 1;
-};
-
-export fn warnf(p: pos, msg: str) void = {
-	os.write(2, p.file.ptr, p.file.len: u64);
-	os.write(2, ": warning: ".ptr, 11u64);
-	os.write(2, msg.ptr, msg.len: u64);
-	os.write(2, "\n".ptr, 1u64);
-	nwarnings += 1;
-};