https://github.com/python/cpython/commit/24b147a19b360c49cb1740aa46211d342aa... commit: 24b147a19b360c49cb1740aa46211d342aaa071f branch: main author: Zanie Blue <contact@zanie.dev> committer: corona10 <donghee.na92@gmail.com> date: 2025-01-07T12:02:55+09:00 summary: gh-128472: Add `-skip-funcs` to BOLT options to fix computed goto errors (gh-128511) * Add `-skip-funcs` to BOLT options to fix computed goto errors Co-authored-by: Gregory Szorc <gregory.szorc@gmail.com> * NEWS --------- Co-authored-by: Gregory Szorc <gregory.szorc@gmail.com> files: A Misc/NEWS.d/next/Build/2025-01-04-22-39-10.gh-issue-128472.Wt5E6M.rst M configure M configure.ac diff --git a/Misc/NEWS.d/next/Build/2025-01-04-22-39-10.gh-issue-128472.Wt5E6M.rst b/Misc/NEWS.d/next/Build/2025-01-04-22-39-10.gh-issue-128472.Wt5E6M.rst new file mode 100644 index 00000000000000..c6233e1f2d8693 --- /dev/null +++ b/Misc/NEWS.d/next/Build/2025-01-04-22-39-10.gh-issue-128472.Wt5E6M.rst @@ -0,0 +1,2 @@ +Skip BOLT optimization of functions using computed gotos, fixing errors on +build with LLVM 19. diff --git a/configure b/configure index 9024d22d4df5cd..08c10ff52ce8d5 100755 --- a/configure +++ b/configure @@ -9398,7 +9398,7 @@ fi printf %s "checking BOLT_COMMON_FLAGS... " >&6; } if test -z "${BOLT_COMMON_FLAGS}" then - BOLT_COMMON_FLAGS=-update-debug-sections + BOLT_COMMON_FLAGS=" -update-debug-sections -skip-funcs=_PyEval_EvalFrameDefault,sre_ucs1_match/1,sre_ucs2_match/1,sre_ucs4_match/1 " fi diff --git a/configure.ac b/configure.ac index 86775e03e73d5a..fb1dd77be167b9 100644 --- a/configure.ac +++ b/configure.ac @@ -2170,7 +2170,14 @@ if test -z "${BOLT_COMMON_FLAGS}" then AS_VAR_SET( [BOLT_COMMON_FLAGS], - [-update-debug-sections] + [m4_normalize(" + [-update-debug-sections] + + dnl At least LLVM 19.x doesn't support computed gotos in PIC compiled code. + dnl Exclude functions containing computed gotos. + dnl TODO this may be fixed in LLVM 20.x via https://github.com/llvm/llvm-project/pull/120267. + [-skip-funcs=_PyEval_EvalFrameDefault,sre_ucs1_match/1,sre_ucs2_match/1,sre_ucs4_match/1] + ")] ) fi