Warn that the '0' flag is ignored, if the precision is present in a format specification.

diff --git a/format_check.c b/format_check.c
index 16eafd1..b550672 100644 (file)
--- a/format_check.c
+++ b/format_check.c
@@ -228,6 +228,10 @@ break_fmt_flags:
 
                /* precision */
                if (fmt == '.') {
+                       if (fmt_flags & FMT_FLAG_ZERO) {
+                               warningf(WARN_FORMAT, pos, "'0' flag ignored with precision in conversion specification %u", num_fmt);
+                       }
+
                        ++num_args;
                        fmt = *(++c);
                        if (fmt == '*') {