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[C extension parser] Disable function outlining on Clang #1055

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Merged
byroot merged 1 commit into from
Jul 22, 2026
+6 −0
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[C extension parser] Disable function outlining on Clang #1055

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6 changes: 6 additions & 0 deletions ext/json/ext/parser/extconf.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,12 @@

append_cflags("-std=c99")

# Disable function outlining on clang to prevent some of the repeated instructions
# in json_eat_whitespace being outlined into function calls.
# Note: This verifies '-mno-outline' is accepted as a valid compiler flag
# and will not pass it if unsupported.
append_cflags("-mno-outline")

if enable_config('parser-use-simd', default=!ENV["JSON_DISABLE_SIMD"])
load __dir__ + "/../simd/conf.rb"
end
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