Fix print output

The standard print statement would use a zero size field for the string
data. This was not handled well, and the print statement never printed
any data.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 6 insertions, 4 deletions

diff --git a/parse-events.c b/parse-events.c
index 5271c01..6478efc 100644
--- a/parse-events.c
+++ b/parse-events.c
@@ -2173,6 +2173,7 @@ static void print_str_arg(struct trace_seq *s, void *data, int size,
         unsigned long long val, fval;
         char *str;
         int print;
+        int len;
 
         switch (arg->type) {
         case PRINT_NULL:
@@ -2187,10 +2188,11 @@ static void print_str_arg(struct trace_seq *s, void *data, int size,
                         if (!arg->field.field)
                                 die("field %s not found", arg->field.name);
                 }
-                str = malloc_or_die(arg->field.field->size + 1);
-                memcpy(str, data + arg->field.field->offset,
-                       arg->field.field->size);
-                str[arg->field.field->size] = 0;
+                /* Zero sized fields, mean the rest of the data */
+                len = arg->field.field->size ? : size;
+                str = malloc_or_die(size + 1);
+                memcpy(str, data + arg->field.field->offset, len);
+                str[len] = 0;
                 trace_seq_puts(s, str);
                 free(str);
                 break;