DebugSymbolsTest fails with Mandrel 22.3.0-dev

[jerboaa]

Fails with:

[ERROR] Tests run: 2, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 340.424 s <<< FAILURE! - in org.graalvm.tests.integration.DebugSymbolsTest
[ERROR] debugSymbolsSmokeGDB{TestInfo}  Time elapsed: 72.936 s  <<< FAILURE!
org.opentest4j.AssertionFailedError: 
There were errors in the GDB session. Note that commands in the session might depend on each other. Errors: 
Command 'info functions .*smoke.*' did not match the expected pattern '.*File debug_symbols_smoke/ClassA.java:.*java.lang.String \*debug_symbols_smoke.ClassA::toString\(void\).*File debug_symbols_smoke/Main.java:.*void debug_symbols_smoke.Main\$\$Lambda\$.*::accept\(java.lang.Object \*\).*void debug_symbols_smoke.Main::lambda\$thisIsTheEnd\$0\(java.io.ByteArrayOutputStream \*, debug_symbols_smoke.ClassA \*\).*void debug_symbols_smoke.Main::main\(java.lang.String\[\] \*\).*void debug_symbols_smoke.Main::thisIsTheEnd\(java.util.List \*\).*'.
Output was:
(gdb) All functions matching regular expression ".*smoke.*":

File debug_symbols_smoke/ClassA.java:
37:	java.lang.String *debug_symbols_smoke.ClassA::toString(debug_symbols_smoke.ClassA *);

File debug_symbols_smoke/Main.java:

    	void debug_symbols_smoke.Main$$Lambda$768/0x00000007c08fcc18::accept(debug_symbols_smoke.Main$$Lambda$768/0x00000007c08fcc18 *, java.lang.Object *);

    50:	void debug_symbols_smoke.Main::lambda$thisIsTheEnd$0(java.io.ByteArrayOutputStream *, debug_symbols_smoke.ClassA *);
64:	void debug_symbols_smoke.Main::main(java.lang.String[] *);
49:	void debug_symbols_smoke.Main::thisIsTheEnd(java.util.List *);
 ==> expected: <true> but was: <false>
	at org.graalvm.tests.integration.DebugSymbolsTest.carryOutGDBSession(DebugSymbolsTest.java:385)
	at org.graalvm.tests.integration.DebugSymbolsTest.debugSymbolsSmokeGDB(DebugSymbolsTest.java:136)

[zakkak]

This look like an upstream issue.

GDB reports that toString is expecting a parameter of type debug_symbols_smoke.ClassA while toString doesn't take any parameters.

@adinn does it ring any bells?

[jerboaa]

Here is what a regular info functions *.smoke.* produces in gdb for me with a 22.3-dev build:

(gdb) info functions .*smoke.*
All functions matching regular expression ".*smoke.*":

File debug_symbols_smoke/ClassA.java:
37:	java.lang.String *debug_symbols_smoke.ClassA::toString(debug_symbols_smoke.ClassA *);

File debug_symbols_smoke/Main.java:
	void debug_symbols_smoke.Main$$Lambda$763/0x00000007c08fc418::accept(debug_symbols_smoke.Main$$Lambda$763/0x00000007c08fc418 *, java.lang.Object *);
50:	void debug_symbols_smoke.Main::lambda$thisIsTheEnd$0(java.io.ByteArrayOutputStream *, debug_symbols_smoke.ClassA *);
64:	void debug_symbols_smoke.Main::main(java.lang.String[] *);
49:	void debug_symbols_smoke.Main::thisIsTheEnd(java.util.List *);

On 21.3 we had this for the same application:

(gdb)  info functions .*smoke.*
All functions matching regular expression ".*smoke.*":

File debug_symbols_smoke/ClassA.java:
	java.lang.String *debug_symbols_smoke.ClassA::toString(void);

File debug_symbols_smoke/Main$$Lambda$584/0x00000007c04e4d60.java:
	void debug_symbols_smoke.Main$$Lambda$584.0x00000007c04e4d60::accept(java.lang.Object *);

File debug_symbols_smoke/Main.java:
	void debug_symbols_smoke.Main::lambda$thisIsTheEnd$0(java.io.ByteArrayOutputStream *, debug_symbols_smoke.ClassA *);
	void debug_symbols_smoke.Main::main(java.lang.String[] *);
	void debug_symbols_smoke.Main::thisIsTheEnd(java.util.List *);

[zakkak]

The regression appears after oracle/graal#4811 and more specifically oracle/graal@87722a0

It's still not clear to me why though. 👀

It looks like the addition of DW_AT_linkage_name results in gdb printing parameters with DW_AT_artificial set (i.e. the this parameter).

[adinn]

Yes, I believe the problem here is that the the method signature is being printed with an extra type for this. I am not sure why that is happening nor why it is not an issue for other methods. I will look into it ASAP.

[jerboaa]

OK, I'll file an upstream issue and assign to you @adinn. Sound good?

[adinn]

@jerboaa Thrilling!

[jerboaa]

@adinn Here you go: oracle/graal#5064