error: new flag ERR_HERE

ERR_HERE is used to mark messages of the form "... here" so that we
can emit sane output to the list file with filename and line number,
instead of a nonsensical "here" which could point almost anywhere.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/asm/listing.c b/asm/listing.c
index b974c46b..5484bd5d 100644
--- a/asm/listing.c
+++ b/asm/listing.c
@@ -324,12 +324,16 @@ static void list_downlevel(int type)
     }
 }
 
-static void list_error(int severity, const char *pfx, const char *msg)
+static void list_error(int severity, const char *fmt, ...)
 {
+    va_list ap;
+
     if (!listfp)
 	return;
 
-    snprintf(listerror, sizeof listerror, "%s%s", pfx, msg);
+    va_start(ap, fmt);
+    vsnprintf(listerror, sizeof listerror, fmt, ap);
+    va_end(ap);
 
     if ((severity & ERR_MASK) >= ERR_FATAL)
 	list_emit();