jit: Do not try to shut down LLVM state in case of LLVM triggered errors.
If an allocation failed within LLVM it is not safe to call back into LLVM as
LLVM is not generally safe against exceptions / stack-unwinding. Thus errors
while in LLVM code are promoted to FATAL. However llvm_shutdown() did call
back into LLVM even in such cases, while llvm_release_context() was careful
not to do so.
We cannot generally skip shutting down LLVM, as that can break profiling. But
it's OK to do so if there was an error from within LLVM.
Reported-By: Jelte Fennema <Jelte.Fennema@microsoft.com>
Author: Andres Freund <andres@anarazel.de>
Author: Justin Pryzby <pryzby@telsasoft.com>
Discussion: https://postgr.es/m/AM5PR83MB0178C52CCA0A8DEA0207DC14F7FF9@AM5PR83MB0178.EURPRD83.prod.outlook.com
Backpatch: 11-, where jit was introduced
Branch
------
REL_12_STABLE
Details
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https://git.postgresql.org/pg/commitdiff/43849b65f3338acad50d9bdf607d2d573f8079c6
Modified Files
--------------
src/backend/jit/llvm/llvmjit.c | 18 ++++++++++++++++--
src/backend/jit/llvm/llvmjit_error.cpp | 10 ++++++++++
src/include/jit/llvmjit.h | 1 +
3 files changed, 27 insertions(+), 2 deletions(-)