https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121607
--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Sam James from comment #6)
> Created attachment 62158 [details]
> pdp11.i
With r16-3298-gfc23b539caa16a, I can't reproduce it:
[hjl@gnu-zen4-1 pr121607]$ cat x.c
typedef enum
{
bfd_error_invalid_error_code
} bfd_error_type;
thread_local bfd_error_type bfd_error;
int aout_16_write_syms___trans_tmp_1;
short aout_16_write_syms_g_0_0;
void xvec_0 (long, void *);
typedef struct
{
int output_section;
} asection;
void bfd_asymbol_section ();
struct pdp11_external_nlist
{
char e_desc[2];
char e_type[1];
char e_ovly[];
} translate_to_native_sym_flags (struct pdp11_external_nlist *sym_pointer)
{
asection *sec;
sym_pointer->e_type[0] &= 5;
bfd_asymbol_section ();
if (sec == 0)
{
bfd_error_type error_tag;
bfd_error = error_tag;
}
if (sec->output_section)
{
bfd_error_type error_tag;
bfd_error = error_tag;
}
}
bool
aout_16_write_syms (struct d *abfd)
{
for (; aout_16_write_syms___trans_tmp_1;)
{
struct pdp11_external_nlist nsp;
if (abfd)
{
xvec_0 (aout_16_write_syms_g_0_0, nsp.e_desc);
*nsp.e_ovly = 0;
}
else
*nsp.e_type = 0;
translate_to_native_sym_flags (&nsp);
}
}
[hjl@gnu-zen4-1 pr121607]$ make libx.so
/export/build/gnu/tools-build/gcc-gitlab-debug/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/tools-build/gcc-gitlab-debug/build-x86_64-linux/gcc/ -O2
-fPIC -fno-semantic-interposition -c -o x.o x.c
x.c: In function ‘translate_to_native_sym_flags’:
x.c:23:1: note: the ABI of passing struct with a flexible array member has
changed in GCC 4.4
23 | {
| ^
x.c: At top level:
x.c:40:28: warning: ‘struct d’ declared inside parameter list will not be
visible outside of this definition or declaration
40 | aout_16_write_syms (struct d *abfd)
| ^
x.c: In function ‘aout_16_write_syms’:
x.c:48:23: warning: writing 1 byte into a region of size 0
[-Wstringop-overflow=]
48 | *nsp.e_ovly = 0;
| ~~~~~~~~~~~~^~~
x.c:21:8: note: destination object ‘e_ovly’ of size 0
21 | char e_ovly[];
| ^~~~~~
/export/build/gnu/tools-build/gcc-gitlab-debug/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/tools-build/gcc-gitlab-debug/build-x86_64-linux/gcc/ -O2
-fPIC -fno-semantic-interposition -shared -o libx.so x.o
[hjl@gnu-zen4-1 pr121607]$
