gbdev/rgbds
1
0
Fork 0
mirror of https://github.com/gbdev/rgbds.git synced 2026-09-23 14:17:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

Prevent 32-bit multiplication overflow

Browse Source 
Basically impossible to achieve, but just in case
This commit is contained in:
Rangi
2026-07-07 17:02:46 -04:00
parent d94d0bcc2f
commit 5aedf31b46
2 changed files with 5 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/gfx/png.cpp
+3 -2
View File
@@ -100,7 +100,8 @@ Png::Png(char const *filename, std::streambuf &file) {
png, info, &width, &height, &bitDepth, &colorType, &interlaceType, nullptr, nullptr
);
pixels.resize(static_cast<size_t>(width) * static_cast<size_t>(height));
size_t nbPixels = static_cast<size_t>(width) * static_cast<size_t>(height);
pixels.resize(nbPixels);
auto colorTypeName = [](int type) {
switch (type) {
@@ -212,7 +213,7 @@ Png::Png(char const *filename, std::streambuf &file) {
assume(png_get_bit_depth(png, info) == 8);
// Now that metadata has been read, we can read the image data
std::vector<png_byte> image(width * height * 4);
std::vector<png_byte> image(nbPixels * 4);
std::vector<png_bytep> rowPtrs(height);
for (uint32_t y = 0; y < height; ++y) {
rowPtrs[y] = image.data() + y * width * 4;