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gh-148832: Use -icf=0 in BOLT_APPLY_FLAGS #148833

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gh-148832: Use -icf=0 in BOLT_APPLY_FLAGS #148833

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5735919
Use -icf=safe in BOLT_APPLY_FLAGS
ashm-dev Apr 21, 2026
5c89a9a
Add blurb
ashm-dev Apr 21, 2026
fbd2b22
Merge branch 'main' into bolt-icf-safe
ashm-dev Apr 21, 2026
0b0404a
Use -icf=0 for older BOLT compatibility
ashm-dev Apr 21, 2026
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4 changes: 4 additions & 0 deletions Misc/NEWS.d/next/Build/2026-04-21-17-27-52.gh-issue-148832.Kx9aQ1.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
Fix :option:`--enable-bolt` build by switching the default BOLT flag from
``-icf=1`` to ``-icf=0``. ``-icf=1`` folds address-taken functions and
breaks type-slot dispatch, crashing on :mod:`list` and :mod:`tuple`
concatenation. Patched by Shamil Abdulaev.
2 changes: 1 addition & 1 deletion configure
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2 changes: 1 addition & 1 deletion configure.ac
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Expand Up @@ -2255,7 +2255,7 @@ then
-reorder-blocks=ext-tsp
-reorder-functions=cdsort
-split-functions
-icf=1
-icf=0
-inline-all
-split-eh
-reorder-functions-use-hot-size
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