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AddressSanitizer: SEGV /build/build/../src/basic/string-util.c:732:29 in advance_offset #13039

@mrc0mmand

Description

@mrc0mmand

systemd version the issue has been seen with

latest master

Used distribution

Arch Linux (clang)

# Sanitizer-specific options                                                                                           
export ASAN_OPTIONS=strict_string_checks=1:detect_stack_use_after_return=1:check_initialization_order=1:strict_init_order=1
export UBSAN_OPTIONS=print_stacktrace=1:print_summary=1:halt_on_error=1
337/721 test-strip-tab-ansi                     FAIL     0.18 s (exit status 1)

--- command ---
PATH='/build/build:/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl' SYSTEMD_KBD_MODEL_MAP='/build/src/locale/kbd-model-map' SYSTEMD_LANGUAGE_FALLBACK_MAP='/build/src/locale/language-fallback-map' /build/build/test-strip-tab-ansi
--- stderr ---
AddressSanitizer:DEADLYSIGNAL
=================================================================
==18262==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f050390afc7 bp 0x7ffe3f2a5930 sp 0x7ffe3f2a5900 T0)
==18262==The signal is caused by a READ memory access.
==18262==Hint: address points to the zero page.
    #0 0x7f050390afc6 in advance_offsets /build/build/../src/basic/string-util.c:732:29
    #1 0x7f050390a4dc in strip_tab_ansi /build/build/../src/basic/string-util.c:784:33
    #2 0x5594842d0423 in main /build/build/../src/test/test-strip-tab-ansi.c:16:9
    #3 0x7f050313bce2 in __libc_start_main (/lib64/libc.so.6+0x23ce2)
    #4 0x5594842d01cd in _start (/build/build/test-strip-tab-ansi+0x31cd)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /build/build/../src/basic/string-util.c:732:29 in advance_offsets
==18262==ABORTING

Found by systemd/systemd-centos-ci#144

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