[Bug preprocessor/24039] cpp segfaults when a non-existent include is encountered

["heas at shrubbery dot net" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From heas at shrubbery dot net  2005-09-23 21:23 -------
Subject: Re:  cpp segfaults when a non-existent include is encountered

Fri, Sep 23, 2005 at 08:02:17PM -0000, pinskia at gcc dot gnu dot org:
> -dH  but there is a better way to get a backtrace.
> use
> gdb --args  /usr/local/libexec/gcc/sparc64-sun-solaris2.9/4.1.0/cc1 -E -quiet -v -D__arch64__ 
> -D__sparcv9 test.c -mcpu=v9 -mtune=ultrasparc -fpch-preprocess -o test.i
> 

nice.  here is the trace:

#0  0xffffffff7f23d28c in strlen () from /usr/lib/64/libc.so.1
#1  0xffffffff7f29c318 in fputs () from /usr/lib/64/libc.so.1
#2  0x00000001005ed5f4 in _cpp_begin_message (pfile=Variable "pfile" is not available.
)
    at ../../gcc-4.1-20050917/libcpp/errors.c:120
#3  0x00000001005ed8c8 in cpp_error (pfile=0x1, level=3, 
    msgid=0x1006b71e0 "%s: %s") at ../../gcc-4.1-20050917/libcpp/errors.c:155
#4  0x00000001005f2184 in _cpp_find_file (pfile=0x100903300, 
    fname=0x100907010 "segfault.h", start_dir=0x1008d1890, fake=28 '\034')
    at ../../gcc-4.1-20050917/libcpp/files.c:436
#5  0x00000001005f2e60 in _cpp_stack_include (pfile=0x100903300, 
    fname=0x100907010 "segfault.h", angle_brackets=1, type=IT_INCLUDE)
    at ../../gcc-4.1-20050917/libcpp/files.c:820
#6  0x00000001005eaf70 in do_include_common (pfile=0x100903300, 
    type=IT_INCLUDE) at ../../gcc-4.1-20050917/libcpp/directives.c:695

I stepped through it, and it appears to be failing with a gettext call.

not the exact location:
(gdb) whe
#0  libintl_dcigettext (domainname=0x1006b71a0 "cpplib", 
    msgid1=0x1006b71d0 "error: ", msgid2=0x0, plural=0, n=0, category=5)
    at ../../gcc-4.1-20050917/intl/dcigettext.c:579
#1  0x00000001005ff234 in libintl_dgettext (domainname=0x1006b71a0 "cpplib", 
    msgid=0x1006b71d0 "error: ") at ../../gcc-4.1-20050917/intl/dgettext.c:53
#2  0x00000001005ed5dc in _cpp_begin_message (pfile=Variable "pfile" is not available.
)
    at ../../gcc-4.1-20050917/libcpp/errors.c:120

	...

(gdb) 
libintl_dgettext (domainname=0x1006b71a0 "cpplib", msgid=0x1006b71d0 "error: ")
    at ../../gcc-4.1-20050917/intl/dgettext.c:54
54      }
(gdb) 
_cpp_begin_message (pfile=Variable "pfile" is not available.
) at ../../gcc-4.1-20050917/libcpp/errors.c:125
125     }
(gdb) 
120         fputs (_("internal error: "), stderr);
(gdb) 

Program received signal SIGSEGV, Segmentation fault.
0xffffffff7f23d28c in strlen () from /usr/lib/64/libc.so.1

if I set the environment variable LANG to "C" (previously unset), it works:
sparc% setenv LANG C
sparc% gcc -E -dH test.c > test.i
gcc: test.c: No such file or directory
gcc: no input files



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24039