Add a destructor for strings to reclaim memory in the event of errors.
Free the ID given for a lookup, it was previously strdup-ed in the lex
code.
Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20200513000318.15166-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
%token EXPR_PARSE EXPR_OTHER EXPR_ERROR
%token <num> NUMBER
%token <str> ID
+%destructor { free ($$); } <str>
%token MIN MAX IF ELSE SMT_ON
%left MIN MAX IF
%left '|'
expr: NUMBER
| ID { if (lookup_id(ctx, $1, &$$) < 0) {
pr_debug("%s not found\n", $1);
+ free($1);
YYABORT;
}
+ free($1);
}
| expr '|' expr { $$ = (long)$1 | (long)$3; }
| expr '&' expr { $$ = (long)$1 & (long)$3; }