boost/interprocess
2
0
Fork 0
mirror of https://github.com/boostorg/interprocess.git synced 2026-01-19 04:12:13 +00:00
Code Issues Projects Releases Wiki Activity

Fixes issue #89 ("priv_size_from_mapping_size() calculates wrong value")

Browse Source
This commit is contained in:
Ion Gaztañaga
2020-06-03 00:39:05 +02:00
parent 1fc321f31b
commit c87039b6c4
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
include/boost/interprocess/mapped_region.hpp
View File

@@ -297,7 +297,7 @@ inline bool mapped_region::priv_flush_param_check
if(m_base == 0)
return false;
if(mapping_offset >= m_size || (mapping_offset + numbytes) > m_size){
if(mapping_offset >= m_size || numbytes > (m_size - size_t(mapping_offset))){
return false;
}
@@ -346,14 +346,14 @@ inline void mapped_region::priv_size_from_mapping_size
(offset_t mapping_size, offset_t offset, offset_t page_offset, std::size_t &size)
{
//Check if mapping size fits in the user address space
//as offset_t is the maximum file size and its signed.
//as offset_t is the maximum file size and it's signed.
if(mapping_size < offset ||
boost::uintmax_t(mapping_size - (offset - page_offset)) >
boost::uintmax_t(std::size_t(-1))){
error_info err(size_error);
throw interprocess_exception(err);
}
size = static_cast<std::size_t>(mapping_size - (offset - page_offset));
size = static_cast<std::size_t>(mapping_size - offset);
}
inline offset_t mapped_region::priv_page_offset_addr_fixup(offset_t offset, const void *&address)