[tor-commits] [tor/maint-0.3.1] Check if tor_compress_new() returns NULL in tor_compress_impl()

[nickm@xxxxxxxxxxxxxx]

commit 8e1b37a4aa9d6277637f82100ac1823a6a193c63
Author: teor <teor2345@xxxxxxxxx>
Date:   Fri Jun 16 09:38:18 2017 +1000

    Check if tor_compress_new() returns NULL in tor_compress_impl()
    
    Partial fix to 22626.
---
 src/common/compress.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/common/compress.c b/src/common/compress.c
index 6513029..92b64d1 100644
--- a/src/common/compress.c
+++ b/src/common/compress.c
@@ -128,6 +128,11 @@ tor_compress_impl(int compress,
           // inputs.
           tor_compress_free(stream);
           stream = tor_compress_new(compress, method, compression_level);
+          if (stream == NULL) {
+            log_warn(LD_GENERAL, "NULL stream while %scompressing",
+                     compress?"":"de");
+            goto err;
+          }
         }
         break;
       case TOR_COMPRESS_OK:



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