vee1e/flatbuffers
1
0
Fork 0
mirror of https://github.com/vee1e/flatbuffers.git synced 2026-09-02 02:07:25 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Fix undefined behavior. Closes #5422 (#5423)

Browse source 
* Fix undefined behavior. Closes #5422

* Move check into callers of make_space
This commit is contained in:
Andrew Noyes 2019-06-27 14:11:31 -07:00 • committed by Wouter van Oortmerssen
parent 550b386995
commit 7d7d796cd0
1 changed files with 2 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

3
include/flatbuffers/flatbuffers.h
View file

@ -880,7 +880,7 @@ class vector_downward {
uint8_t *data_at(size_t offset) const { return buf_ + reserved_ - offset; }
void push(const uint8_t *bytes, size_t num) {
memcpy(make_space(num), bytes, num);
if (num > 0) { memcpy(make_space(num), bytes, num); }
}
// Specialized version of push() that avoids memcpy call for small data.
@ -903,6 +903,7 @@ class vector_downward {
}
// Version for when we know the size is larger.
// Precondition: zero_pad_bytes > 0
void fill_big(size_t zero_pad_bytes) {
memset(make_space(zero_pad_bytes), 0, zero_pad_bytes);
}