https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87084
Bug ID: 87084
Summary: Excessive diagnostic messages for invalid use of
__builtin_va_arg_pack{,_len}() in a loop
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
All gcc versions since the current trunk and down to at least 4.4 emit
redundant diagnostics for each copy of the unrolled loop when compiling the
following snippet w/ -O3 (or -Ofast w/ gcc versions which implement it):
int xc;
void
zp (void)
{
int ta;
for (ta = 0; ta < 8; ++ta)
{
int ij;
for (ij = 0; ij < 17; ++ij)
xc = __builtin_va_arg_pack () /* or __builtin_va_arg_pack_len () */;
}
}
% gcc-9.0.0-alpha20180819 -O3 -c fz5t1wes.c
fz5t1wes.c: In function 'zp':
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
13 | xc = __builtin_va_arg_pack () /* or __builtin_va_arg_pack_len ()
*/;
| ^~~~~~~~~~~~~~~~~~~~~~~~
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
fz5t1wes.c:13:14: error: invalid use of '__builtin_va_arg_pack ()'
I believe the diagnostics should really be emitted only once for the entirety
of zp().
