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A Segmentation fault in asn1fix_enum.c:82:5 #394

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@seviezhou

Description

@seviezhou

System info

Ubuntu x86_64, clang 6.0, asn1c (latest master 00fa516)

Configure

CFLAGS="-g -fsanitize=address" LDFLAGS="-fsanitize=address" ./configure

Command line

./asn1c/asn1c -EF @@

Output

FATAL: Segmentation fault (core dumped)

AddressSanitizer output

FATAL: AddressSanitizer:DEADLYSIGNAL
=================================================================
==855==ERROR: AddressSanitizer: V on unknown address 0x000000000001 (pc 0x0000004f7132 bp 0x7ffd8d3958b0 sp 0x7ffd8d394fe8 T0)
==855==The signal is caused by a READ memory access.
==855==Hint: address points to the zero page.
    #0 0x4f7131 in __sanitizer::internal_strlen(char const*) (/home/seviezhou/asn1c/asn1c/asn1c+0x4f7131)
    #1 0x4468d5 in printf_common(void*, char const*, __va_list_tag*) (/home/seviezhou/asn1c/asn1c/asn1c+0x4468d5)
    #2 0x44721b in __interceptor_vfprintf (/home/seviezhou/asn1c/asn1c/asn1c+0x44721b)
    #3 0x58022f in _default_error_logger /home/seviezhou/asn1c/libasn1fix/asn1fix.c:580:2
    #4 0x5bd7c9 in asn1f_fix_enum /home/seviezhou/asn1c/libasn1fix/asn1fix_enum.c:82:5
    #5 0x582b7f in asn1f_fix_simple /home/seviezhou/asn1c/libasn1fix/asn1fix.c:377:8
    #6 0x5864d8 in asn1f_recurse_expr /home/seviezhou/asn1c/libasn1fix/asn1fix_misc.c:209:8
    #7 0x5866bf in asn1f_recurse_expr /home/seviezhou/asn1c/libasn1fix/asn1fix_misc.c:219:9
    #8 0x581c5f in phase_1_1 /home/seviezhou/asn1c/libasn1fix/asn1fix.c:326:8
    #9 0x5816cf in phase_1_1 /home/seviezhou/asn1c/libasn1fix/asn1fix.c:303:10
    #10 0x57df11 in asn1f_fix_module__phase_1 /home/seviezhou/asn1c/libasn1fix/asn1fix.c:198:9
    #11 0x57df11 in asn1f_process /home/seviezhou/asn1c/libasn1fix/asn1fix.c:84
    #12 0x5156f8 in main /home/seviezhou/asn1c/asn1c/asn1c.c:379:11
    #13 0x7fbd5f15eb96 in __libc_start_main /build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:310
    #14 0x41a969 in _start (/home/seviezhou/asn1c/asn1c/asn1c+0x41a969)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: V (/home/seviezhou/asn1c/asn1c/asn1c+0x4f7131) in __sanitizer::internal_strlen(char const*)
==855==ABORTING

POC

SEGV-asn1f_fix_enum-asn1fix_enum-82.zip

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