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build: make UBSan work :)

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This is really just a question of turning off the production sanitizer
configuration so we get nice diagnostics. Not much else to say.

Change-Id: I76bd6d225320056ed95bd89955f00beff2db0d2f
This commit is contained in:
Jade Lovelace 2024-06-18 16:31:58 -07:00
parent 1eef1927b6
commit e0a3a5f226
1 changed files with 8 additions and 1 deletions
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9
meson.build
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@ -437,7 +437,9 @@ add_project_arguments(
language : 'cpp',
)
if cxx.get_id() in ['gcc', 'clang']
# We turn off the production UBSan if the slower dev UBSan is requested, to
# give better diagnostics.
if cxx.get_id() in ['gcc', 'clang'] and 'undefined' not in get_option('b_sanitize')
# 2024-03-24: jade benchmarked the default sanitize reporting in clang and got
# a regression of about 10% on hackage-packages.nix with clang. So we are trapping instead.
#
@ -452,6 +454,11 @@ if cxx.get_id() in ['gcc', 'clang']
add_project_arguments(sanitize_args, language: 'cpp')
add_project_link_arguments(sanitize_args, language: 'cpp')
endif
# Clang's default of -no-shared-libsan on Linux causes link errors; on macOS it defaults to shared.
# GCC defaults to shared libsan so is fine.
if cxx.get_id() == 'clang' and get_option('b_sanitize') != ''
add_project_link_arguments('-shared-libsan', language : 'cpp')
endif
add_project_link_arguments('-pthread', language : 'cpp')
if cxx.get_linker_id() in ['ld.bfd', 'ld.gold']