[Bug 234201] Regression in LLVM libunwind: Apache Tomcat web application crashes on 12.0 (but not on 11.2)

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234201

--- Comment #10 from Dimitry Andric <dim at FreeBSD.org> ---
(In reply to Eirik Oeverby from comment #9)
> Is there any hope of having this fixed? An alternative is to update the
> jakarta-commons-daemon port to USE_GCC=yes if building for 12.

We recently had a rather large update for llvm-libunwind, so maybe the
experiment can be retried with a recent -CURRENT (after r345345, 2019-03-20),
-STABLE12 (after r346168, 2019-04-12), or -STABLE11 (after r346296,
2019-04-16)?

I have belatedly tried to reproduce the issue with the jarfile from comment 8,
and it appears to work just fine on -CURRENT r350371 (as of 2019-07-27):

$ uname -v -m
FreeBSD 13.0-CURRENT r350371 GENERIC  amd64

$ pwd
/share/dim/bugs/bug234201

$ ls -l
total 64
-rw-rw-rw-  1 dim  dim  61481 2019-07-29 19:20:35 md5demo2.jar

$ mkdir md5demo2

$ unzip -d md5demo2 md5demo2.jar
Archive:  md5demo2.jar
   creating: md5demo2/META-INF/
 extracting: md5demo2/META-INF/MANIFEST.MF
 extracting: md5demo2/fast-md5-2.7.1.jar
   creating: md5demo2/fast-md5-native-2.7.1/
   creating: md5demo2/fast-md5-native-2.7.1/freebsd_x86/
   creating: md5demo2/fast-md5-native-2.7.1/linux_x86/
   creating: md5demo2/fast-md5-native-2.7.1/win32_x86/
   creating: md5demo2/fast-md5-native-2.7.1/win_amd64/
   creating: md5demo2/fast-md5-native-2.7.1/darwin_x86_64/
   creating: md5demo2/fast-md5-native-2.7.1/linux_amd64/
   creating: md5demo2/fast-md5-native-2.7.1/freebsd_amd64/
   creating: md5demo2/fast-md5-native-2.7.1/darwin_x86/
   creating: md5demo2/fast-md5-native-2.7.1/darwin_ppc/
 extracting: md5demo2/fast-md5-native-2.7.1.jar
   creating: md5demo2/lib/
 extracting: md5demo2/MD5Demo2.class
 extracting: md5demo2/MD5Demo2.java
 extracting: md5demo2/MD5.so
 extracting: md5demo2/README.txt

$ cd md5demo2

$ java -version
openjdk version "1.8.0_212"
OpenJDK Runtime Environment (build 1.8.0_212-b04)
OpenJDK 64-Bit Server VM (build 25.212-b04, mixed mode)

$ java -cp .:fast-md5-2.7.1.jar MD5Demo2
MD5 Demo
MD5 value: d464064618e61b35dca3e5dee84c7b56

$ echo $?
0

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