MonetDB: newjson - check return of read

[svetlin via checkin-list]

Changeset: 185155d4fcfd for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/185155d4fcfd
Modified Files:
        sql/backends/monet5/vaults/json/json.c
Branch: newjson
Log Message:

check return of read


diffs (14 lines):

diff --git a/sql/backends/monet5/vaults/json/json.c 
b/sql/backends/monet5/vaults/json/json.c
--- a/sql/backends/monet5/vaults/json/json.c
+++ b/sql/backends/monet5/vaults/json/json.c
@@ -80,7 +80,9 @@ read_json_file(JSONFileHandle *jfh)
                size_t length = jfh->size;
                content = sa_zalloc(jfh->sa, length + 1);
                if (content) {
-                       read(jfh->fd, content, length);
+                       ssize_t nbytes = read(jfh->fd, content, length);
+                       if (nbytes < 0)
+                               return NULL;
                        content[length + 1] = '\0';
                }
        }
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