src: check return value of ftell()

If ftell() returns -1L, abort instead of passing static_cast<size_t>(-1) to the vector allocator and fread(). Refs: #46463 PR-URL: #46495 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Joyee Cheung <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Darshan Sen <[email protected]>
nodejs · Apr 3, 2023 · bc9a577 · bc9a577
1 parent b3b3b33
commit bc9a577
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/node_snapshotable.cc b/src/node_snapshotable.cc
@@ -867,6 +867,7 @@ bool SnapshotData::FromBlob(SnapshotData* out, FILE* in) {
   int err = fseek(in, 0, SEEK_END);
   CHECK_EQ(err, 0);
   size_t size = ftell(in);
+  CHECK_NE(size, static_cast<size_t>(-1L));
   err = fseek(in, 0, SEEK_SET);
   CHECK_EQ(err, 0);