From 1283a898c0f5a5a20e962f011170cbc1859b7dbd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Anton=20Luka=20=C5=A0ijanec?= <anton@sijanec.eu>
Date: Mon, 13 Feb 2023 00:30:21 +0100
Subject: store output in heap instead of on stack, which is too small for big
 torrents

---
 utils/bencoding.c | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/utils/bencoding.c b/utils/bencoding.c
index ad6ded0..c12369b 100644
--- a/utils/bencoding.c
+++ b/utils/bencoding.c
@@ -24,50 +24,55 @@ int main (int argc, char ** argv) {
 	struct bencoding * bencoding = bdecode(in, size, 0);
 	if (argv[1][0] == 'd') {
 		len = b2json_length(bencoding);
-		char out[len+1];
+		char * out = malloc(len+1);
 		char * end = b2json(out, bencoding);
 		*end = '\0';
 		puts(out);
 		if (end - out != len)
 			error_at_line(4, 0, __FILE__, __LINE__, "b2json wrote %td instead of %d bytes.", end-out, len);
 		fprintf(stderr, "len: %d\n", len);
+		free(out);
 	}
 	if (argv[1][0] == 'p') {
 		len = b2json_length(bpath(bencoding, argv[2]));
-		char out[len+1];
+		char * out = malloc(len+1);
 		char * end = b2json(out, bpath(bencoding, argv[2]));
 		*end = '\0';
 		puts(out);
 		if (end - out != len)
 			error_at_line(4, 0, __FILE__, __LINE__, "b2json wrote %td instead of %d bytes.", end-out, len);
 		fprintf(stderr, "len: %d\n", len);
+		free(out);
 	}
 	if (argv[1][0] == 'v') {
 		len = b2json_length(bval(bencoding, bstrs(argv[2])));
-		char out[len+1];
+		char * out = malloc(len+1);
 		char * end = b2json(out, bval(bencoding, bstrs(argv[2])));
 		*end = '\0';
 		puts(out);
 		if (end - out != len)
 			error_at_line(4, 0, __FILE__, __LINE__, "b2json wrote %td instead of %d bytes.", end-out, len);
 		fprintf(stderr, "len: %d\n", len);
+		free(out);
 	}
 	if (argv[1][0] == 'f') {
 		bforeach (bencoding, value) {
 			len = b2json_length(value->key);
-			char out[len+1];
+			char * out = malloc(len+1);
 			char * end = b2json(out, value->key);
 			*end = '\0';
 			if (end - out != len)
 				error_at_line(4, 0, __FILE__, __LINE__, "b2json wrote %td instead of %d bytes.", end-out, len);
 			printf("key(%d): %s\n", len, out);
 			len = b2json_length(value);
-			char out2[len+1];
+			char * out2 = malloc(len+1);
 			end = b2json(out2, value);
 			*end = '\0';
 			if (end - out2 != len)
 				error_at_line(4, 0, __FILE__, __LINE__, "b2json wrote %td instead of %d bytes.", end-out2, len);
 			printf("value(%d): %s\n", len, out2);
+			free(out);
+			free(out2);
 		}
 	}
 	if (argv[1][0] == 'i') {
@@ -80,13 +85,14 @@ int main (int argc, char ** argv) {
 		elem->child = NULL;
 		free_bencoding(elem);
 		len = b2json_length(bencoding);
-		char out[len+1];
+		char * out = malloc(len+1);
 		char * end = b2json(out, bencoding);
 		*end = '\0';
 		puts(out);
 		if (end - out != len)
 			error_at_line(4, 0, __FILE__, __LINE__, "b2json wrote %td instead of %d bytes.", end-out, len);
 		fprintf(stderr, "len: %d\n", len);
+		free(out);
 	}
 	if (argv[1][0] == 'c') {
 		struct bencoding * elem = bdecode(argv[2], -2, 0);
@@ -105,10 +111,11 @@ int main (int argc, char ** argv) {
 	}
 	if (argv[1][0] == 'e') {
 		int len = bencode_length(bencoding);
-		char bencoded[len+1];
+		char * bencoded = malloc(len+1);
 		bencoded[len] = '\0';
 		bencode(bencoded, bencoding);
 		puts(bencoded);
+		free(bencoded);
 	}
 	free_bencoding(bencoding);
 	free(in);
-- 
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