[Bug c/20649] New: Segmentation fault in decl_function_context (tree.c:5116)

["aj at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Compiling glibc on i686 with GCC 4.0 CVS 20050325 I get this segmentation fault 
compiling the testsuite: 
 
/opt/gcc/4.0-devel/libexec/gcc/i686-suse-linux-gnu/4.0.0/cc1 -fpreprocessed 
inl-tester.i -quiet -dumpbase inl-tester.c -mpreferred-stack-boundary=2 
-mtune=pentiumpro -auxbase-strip /home/aj/builds/glibc/string/inl-tester.o -g 
-O2 -Wall -Winline -Wstrict-prototypes -Wwrite-strings -std=gnu99 -version -o 
inl-tester.s 
GNU C version 4.0.0 20050325 (prerelease) (i686-suse-linux-gnu) 
        compiled by GNU C version 4.0.0 20050325 (prerelease). 
GGC heuristics: --param ggc-min-expand=63 --param ggc-min-heapsize=63397 
tester.c: In function ‘test_stpncpy’: 
tester.c:279: internal compiler error: Segmentation fault 
Please submit a full bug report, 
with preprocessed source if appropriate. 
See <URL:http://gcc.gnu.org/bugs.html> for instructions. 
 
Using gdb I get the following stacktrace: 
Program received signal SIGSEGV, Segmentation fault. 
decl_function_context (decl=0x0) at /home/aj/cvs/gcc-4_0-branch/gcc/tree.c:5116 
5116      if (TREE_CODE (decl) == ERROR_MARK) 
(gdb) bt 
#0  decl_function_context (decl=0x0) 
at /home/aj/cvs/gcc-4_0-branch/gcc/tree.c:5116 
#1  0x08140c3d in gen_decl_die (decl=<value optimized out>, 
context_die=0x4180ed34) 
    at /home/aj/cvs/gcc-4_0-branch/gcc/dwarf2out.c:10502 
#2  0x081440ef in decls_for_scope (stmt=0x417e8ccc, context_die=0x4180ed34, 
depth=2) 
    at /home/aj/cvs/gcc-4_0-branch/gcc/dwarf2out.c:12404 
#3  0x08144280 in gen_lexical_block_die (stmt=0x417e8ccc, context_die=0x0, 
depth=2) 
    at /home/aj/cvs/gcc-4_0-branch/gcc/dwarf2out.c:11647 
#4  0x08143e60 in gen_block_die (stmt=0x417e8ccc, context_die=0x4180ebfc, 
depth=2) 
    at /home/aj/cvs/gcc-4_0-branch/gcc/dwarf2out.c:12365 
#5  0x0814417b in decls_for_scope (stmt=<value optimized out>, 
context_die=0x4180ebfc, depth=1) 
    at /home/aj/cvs/gcc-4_0-branch/gcc/dwarf2out.c:12417 
#6  0x08143fd8 in gen_block_die (stmt=0x417e8c98, context_die=0x4180eb60, 
depth=1) 
    at /home/aj/cvs/gcc-4_0-branch/gcc/dwarf2out.c:11676 
#7  0x0814417b in decls_for_scope (stmt=<value optimized out>, 
context_die=0x4180eb60, depth=0) 
    at /home/aj/cvs/gcc-4_0-branch/gcc/dwarf2out.c:12417 
#8  0x08142bb6 in gen_subprogram_die (decl=0x40b5b21c, context_die=0x0) 
    at /home/aj/cvs/gcc-4_0-branch/gcc/dwarf2out.c:11475 
#9  0x081405c1 in gen_decl_die (decl=0x40b5b21c, context_die=0x401f58f0) 
    at /home/aj/cvs/gcc-4_0-branch/gcc/dwarf2out.c:12682 
#10 0x082e4507 in rest_of_compilation () 
at /home/aj/cvs/gcc-4_0-branch/gcc/passes.c:334 
#11 0x0809d9ad in execute_pass_list (pass=0x84335e0) 
    at /home/aj/cvs/gcc-4_0-branch/gcc/tree-optimize.c:533 
#12 0x0809dc4b in tree_rest_of_compilation (fndecl=0x40b5b21c) 
    at /home/aj/cvs/gcc-4_0-branch/gcc/tree-optimize.c:668 
#13 0x0805a526 in c_expand_body (fndecl=0x40b5b21c) 
at /home/aj/cvs/gcc-4_0-branch/gcc/c-decl.c:6439 
#14 0x08309433 in cgraph_expand_function (node=0x40b5e8dc) 
    at /home/aj/cvs/gcc-4_0-branch/gcc/cgraphunit.c:833 
#15 0x08309e6d in cgraph_optimize () 
at /home/aj/cvs/gcc-4_0-branch/gcc/cgraphunit.c:1698 
#16 0x082caa48 in toplev_main (argc=0, argv=0xbfffef44) 
    at /home/aj/cvs/gcc-4_0-branch/gcc/toplev.c:1009 
#17 0x40046e80 in __libc_start_main () from /lib/tls/libc.so.6 
#18 0x08049aa1 in _start () at start.S:119

-- 
           Summary: Segmentation fault in decl_function_context
                    (tree.c:5116)
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: aj at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-linux-gnu
  GCC host triplet: i686-linux-gnu
GCC target triplet: i686-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20649