RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-25 20:23:11 +01:00
Code Issues Projects Releases Wiki Activity

[docs] provide the specific sanitizer option to detect junk-in-the-ftrunc

Browse Source 
llvm-svn: 330958
This commit is contained in:
Sanjay Patel 2018-04-26 17:04:07 +00:00
parent c577c18253
commit 5030a89334
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
docs/ReleaseNotes.rst
View File

@ -63,7 +63,8 @@ Non-comprehensive list of changes in this release
* Optimization of floating-point casts is improved. This may cause surprising
results for code that is relying on undefined behavior. Code sanitizers can
be used to detect affected patterns such as this:
be used to detect affected patterns. The option for detecting this problem
alone is "-fsanitize=float-cast-overflow":
.. code-block:: c
@ -76,7 +77,7 @@ Non-comprehensive list of changes in this release
.. code-block:: bash
clang -O1 ftrunc.c -fsanitize=undefined ; ./a.out
clang -O1 ftrunc.c -fsanitize=float-cast-overflow ; ./a.out
ftrunc.c:5:15: runtime error: 4.29497e+09 is outside the range of representable values of type 'int'
junk in the ftrunc: 0.000000