https://sourceware.org/bugzilla/show_bug.cgi?id=26554
Bug ID: 26554
Summary: SIGSEGV in pe_dll_generate_implib
Product: binutils
Version: 2.36 (HEAD)
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: markus.boeck02 at gmail dot com
Target Milestone: ---
Current HEAD of the repository (42afa120eb180bce52c692939cd179e3c02160d9)
causes a segmentation fault when --out-implib is specified on the command line.
The simplest reproduction is to take any C source file that has eg. an empty
main in it and compile it with the command:
gcc main.c -Wl,--out-implib,libout.dll.a
with a gcc that targets a MinGW target.
The SIGSEGV is caused by the dll_filename variable being NULL at the call to
xstrdup in pe-dll.c:2823
The backtrace generated by gdb is:
#0 0x00007ff9e320d2f1 in strlen () from C:\WINDOWS\System32\msvcrt.dll
#1 0x00000000005600c7 in xstrdup (s=0x0) at ../../libiberty/xstrdup.c:33
#2 0x000000000043f41c in pep_dll_generate_implib (def=0x60148d0,
impfilename=0x1797c0 "libcmTC_3e257.dll.a", info=0x6158e0 <link_info>) at
../../ld/pe-dll.c:2823
#3 0x0000000000430984 in gld_i386pep_finish () at ei386pep.c:1775
#4 0x0000000000425cda in ldemul_finish () at ../../ld/ldemul.c:101
#5 0x000000000041ae46 in lang_process () at ../../ld/ldlang.c:8185
#6 0x000000000041f4d8 in main (argc=71, argv=0x1725a0) at
../../ld/ldmain.c:494
#7 0x0000000000401434 in __tmainCRTStartup () at ../crt/crtexe.c:335
#8 0x000000000040113d in mainCRTStartup () at ../crt/crtexe.c:219
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