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Mike Kaganski 635a0b426e Fix MulDivSaturate to avoid overflow 
Thanks to Caolan
https://gerrit.libreoffice.org/c/core/+/110839/comments/5c47cab2_b0523546

> oss-fuzz has come up with a case of n 9223372036854775807 m 72 d 127
>
> include/o3tl/unit_conversion.hxx:105:28: runtime error: signed integer
> overflow: 9223372036854775807 + 63 cannot be represented in type 'long'

Change-Id: I0fe26f6c854a90cf577a60528d15f3da5471b914
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/141711
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
2022-10-24 14:07:31 +02:00
..
qa Fix MulDivSaturate to avoid overflow 2022-10-24 14:07:31 +02:00
CompilerTest_o3tl_temporary.mk
CompilerTest_o3tl_unsafe_downcast.mk
CppunitTest_o3tl_tests.mk Some more o3tl::starts/ends_with overloads 2021-09-21 23:32:02 +02:00
IwyuFilter_o3tl.yaml Recheck modules [o-r]* with IWYU 2022-01-30 16:10:57 +01:00
Makefile
Module_o3tl.mk
README.md Updated README.md files 2021-04-19 11:13:41 +02:00

README.md

LibreOffice Template Library

Very basic template functionality, a bit like boost or STL, but specific to LibreOffice.

o3tl stands for "OOo [o3, get it?] template library", in which OOo stands for OpenOffice.org, predecessor of LibreOffice.

From https://blog.thebehrens.net/2006/01/15/update-cow_wrapper-is-available-now/ The scope for o3tl is admittedly kind of ambitious, as it should contain "...very basic (template) functionality, comparable to what's provided by boost or stl, but specific to OOo (what comes to mind are e.g. STL adapters for our own data types and UNO, and stuff that could in principle be upstreamed to boost, but isn't as of now)."

Class Overview

  • [git:include/o3tl/cow_wrapper.hxx]

    A copy-on-write wrapper.

  • [git:include/o3tl/lazy_update.hxx]

    This template collects data in input type, and updates the output type with the given update functor, but only if the output is requested. Useful if updating is expensive, or input changes frequently, but output is only comparatively seldom used.

  • [git:include/o3tl/vector_pool.hxx]

    Simple vector-based memory pool allocator.

  • [git:include/o3tl/functional.hxx]

    Some more templates, leftovers in spirit of STLport's old functional header that are not part of the C++ standard (STLport has been replaced by direct use of the C++ STL in LibreOffice).