RFR: 8265911: assert(comp != __null) failed: Compiler instance missing

Vladimir Kozlov kvn at openjdk.java.net
Sun Apr 25 17:41:46 UTC 2021

On Sun, 25 Apr 2021 08:56:39 GMT, Frank King <github.com+16741972+whjpji at openjdk.org> wrote:

> As I debugged into the code, the `_c1_count` was set to `1` [1] with flags `-XX:+EnableJVMCI -XX:+UseJVMCICompiler -XX:JVMCIHostThreads=1`. However, [2] would never be executed, and thus `_compilers[0]` was `NULL`. 
> When C1 is disabled, `_c1_count` should always be `0`, so I added this `#ifdef` guard to avoid changing value of `_c1_count` under this circumstance.
> [1] https://github.com/openjdk/jdk/blob/f1f2afda5a0ab8f213e8a1b5324a251928c8d81a/src/hotspot/share/compiler/compileBroker.cpp#L656
> [2] https://github.com/openjdk/jdk/blob/f1f2afda5a0ab8f213e8a1b5324a251928c8d81a/src/hotspot/share/compiler/compileBroker.cpp#L664



Marked as reviewed by kvn (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/3672

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