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[sanitizer] Allow *___lcxx_override symbolse in symbolizer #79904

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Merged
vitalybuka merged 1 commit into from
Jan 29, 2024
Merged

[sanitizer] Allow *___lcxx_override symbolse in symbolizer #79904

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6 changes: 4 additions & 2 deletions compiler-rt/lib/sanitizer_common/symbolizer/scripts/build_symbolizer.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -191,8 +191,10 @@ $OPT -passes=internalize -internalize-public-api-list=${SYMBOLIZER_API_LIST} all
$CC $FLAGS -fno-lto -c opt.bc -o symbolizer.o

echo "Checking undefined symbols..."
nm -f posix -g symbolizer.o | cut -f 1,2 -d \ | LC_COLLATE=C sort -u > undefined.new
(diff -u $SCRIPT_DIR/global_symbols.txt undefined.new | grep -E "^\+[^+]") && \
export LC_ALL=C
nm -f posix -g symbolizer.o | cut -f 1,2 -d \ | sort -u > undefined.new
grep -Ev "^#|^$" $SCRIPT_DIR/global_symbols.txt | sort -u > expected.new
(diff -u expected.new undefined.new | grep -E "^\+[^+]") && \
(echo "Failed: unexpected symbols"; exit 1)

cp -f symbolizer.o $OUTPUT
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5 changes: 5 additions & 0 deletions compiler-rt/lib/sanitizer_common/symbolizer/scripts/global_symbols.txt
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@@ -1,3 +1,6 @@
# This file is used to control symbols used by internal symbolizer. We want to
# avoid unexpected dependency on function intercepted by sanitizers.

_GLOBAL_OFFSET_TABLE_ U
_ZN11__sanitizer13internal_mmapEPvjiiiy U
_ZN11__sanitizer13internal_mmapEPvmiiiy U
Expand Down Expand Up @@ -62,6 +65,8 @@ __sanitizer_symbolize_flush T
__sanitizer_symbolize_frame T
__sanitizer_symbolize_set_demangle T
__sanitizer_symbolize_set_inline_frames T
__start___lcxx_override U
__stop___lcxx_override U
__strdup U
__udivdi3 U
__umoddi3 U
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