When running the jdk jtreg tests with ubsan enabled binaries on Linux x86_64, I
get the warning below.
This shows up in a couple of tests, for example
java/awt/image/mlib/MlibOpsTest.jtr
java/awt/image/Raster/TestChildRasterOp.jtr
src/java.desktop/share/native/libmlib_image/mlib_ImageScanPoly.c:292:43:
runtime error: division by zero
#0 0x7fe6d958b862 in mlib_AffineEdges
src/java.desktop/share/native/libmlib_image/mlib_ImageScanPoly.c:292
#1 0x7fe6d958bb5d in mlib_ImageAffine_alltypes
src/java.desktop/share/native/libmlib_image/mlib_ImageAffine.c:179
#2 0x7fe6d9e9b398 in Java_sun_awt_image_ImagingLib_transformBI
src/java.desktop/share/native/libawt/awt/medialib/awt_ImagingLib.c:922
#3 0x7fe76f00ae7b (<unknown module>)
The issue has been discussed with Phil Race (see
https://bugs.openjdk.org/browse/JDK-8333277) and the division by zero has been
already handled in the coding.
However we can avoid it (and make ubsan happy) and in this case also do a few
operations less.
-------------
Commit messages:
- JDK-8333277
Changes: https://git.openjdk.org/jdk/pull/19674/files
Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19674&range=00
Issue: https://bugs.openjdk.org/browse/JDK-8333277
Stats: 7 lines in 1 file changed: 4 ins; 0 del; 3 mod
Patch: https://git.openjdk.org/jdk/pull/19674.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/19674/head:pull/19674
PR: https://git.openjdk.org/jdk/pull/19674
