deps: Print name of file on parse error

deps.c

@@ -341,7 +341,7 @@ depsparse(const char *name, bool allowmissing)
  case '$':
  c = getc(f);
  if (c != '$') {
- warn("bad depfile: contains variable reference");
+ warn("bad depfile '%s': contains variable reference", name);
  goto err;
  }
  break;
@@ -351,7 +351,7 @@ depsparse(const char *name, bool allowmissing)
  }
  if (sawcolon) {
  if (!isspace(c) && c != EOF) {
- warn("bad depfile: '%c' is not a valid target character", c);
+ warn("bad depfile '%s': '%c' is not a valid target character", name, c);
  goto err;
  }
  if (buf.len > 0) {
@@ -377,15 +377,15 @@ depsparse(const char *name, bool allowmissing)
  if (c == EOF)
  break;
  if (c != ':') {
- warn("bad depfile: expected ':', saw '%c'", c);
+ warn("bad depfile '%s': expected ':', saw '%c'", name, c);
  goto err;
  }
  if (!out) {
  out = mkstr(buf.len);
  memcpy(out->s, buf.data, buf.len);
  out->s[buf.len] = '\0';
  } else if (out->n != buf.len || memcmp(buf.data, out->s, buf.len) != 0) {
- warn("bad depfile: multiple outputs: %.*s != %s", (int)buf.len, buf.data, out->s);
+ warn("bad depfile '%s': multiple outputs: %.*s != %s", name, (int)buf.len, buf.data, out->s);
  goto err;
  }
  sawcolon = true;
@@ -395,7 +395,7 @@ depsparse(const char *name, bool allowmissing)
  for (;;) {
  if (c == '\\') {
  if (getc(f) != '\n') {
- warn("bad depfile: '\\' only allowed before newline");
+ warn("bad depfile '%s': '\\' only allowed before newline", name);
  goto err;
  }
  } else if (!isblank(c)) {
@@ -405,7 +405,7 @@ depsparse(const char *name, bool allowmissing)
  }
  }
  if (ferror(f)) {
- warn("depfile read:");
+ warn("depfile read '%s':", name);
  goto err;
  }
  fclose(f);