On 7/03/2026 2:29 am, Kevin Walls wrote:
I did https://bugs.openjdk.org/browse/JDK-8264593 which "promoted" the debug utils into product builds, and made them available on Windows. So I'm in favour of them existing, and being available! Yes maybe they need better names if the short debug utils have clashed with something else in the past, maybe it was a clash with some native test. Maybe JVM_dbg_pp, JVM_dbg_blob, etc..? (We already have dbg_is_safe). I don't see it spelled out exactly what the clash was.
The clash was simply that the agent had a "debug" function and it instead called the JVM's "debug" function (the issue was JDK-8326993 but it is not public simply due to dealing with an internal test).
Seems to me though we have accidentally(?) exposed functions in libjvm that are not intended to be exported. The main exported functions we used to define via the map files, as I recall, were the JVM_xxx and JNI_xxx functions that form the two exported API's of the JVM. Granted there are some exceptions eg the jio_ functions.
David -----
Thanks Kevin ________________________________ From: Baesken, Matthias <[email protected]> Sent: Friday, March 6, 2026 3:16 PM To: Erik Joelsson <[email protected]>; [email protected] <[email protected]> Subject: [External] : RE: Exporting debug helpers and 8375311: Some builds are missing debug helpers and exporting debug-helpers Btw. looking through the JDK native libs, there are also a few exported symbols without Java_ , JNU_ , JVM_ etc. name-prefix and rather short names (but fortunately not as short as e.g. the debug helpers) : nm images/jdk/lib/*.so | grep " T " 0000000000007be0 T initInetAddressIDs 0000000000007a00 T ipv4_available 0000000000007a10 T ipv6_available 000000000000f1d0 T Pgrab 000000000000d6c0 T Pgrab_core 000000000000bc70 T Prelease 000000000000c6a0 T ps_getpid 000000000000c7d0 T ps_lgetfpregs 000000000000c7f0 T ps_lgetregs 000000000000c790 T ps_lsetfpregs 000000000000c7b0 T ps_lsetregs 000000000000c750 T ps_pdread 000000000000c770 T ps_pdwrite 000000000000c6b0 T ps_pglobal_lookup 00000000000123a0 T avx2_partition 00000000000131d0 T avx2_sort 0000000000036990 T avx512_partition 0000000000037f70 T avx512_sort 000000000007eaa0 T doDrawPath 000000000007e9c0 T doFillPath 0000000000050180 T GetNativePrim 0000000000019ef0 T getErrorString 00000000000190c0 T GetStringPlatformChars 00000000000190d0 T GetStringPlatformCharsStrict 00000000000191b0 T InitializeEncoding Best regards, Matthias Confidential - Oracle Restricted \Including External Recipients
