https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80606
Bug ID: 80606
Summary: avx-vtestpd-1.c contains outdated line number
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: trivial
Priority: P3
Component: testsuite
Assignee: unassigned at gcc dot gnu.org
Reporter: vries at gcc dot gnu.org
Target Milestone: ---
gcc/testsuite/gcc.target/i386/avx-vtestpd-1.c contains a reference to a line
number 164:
...
/* { dg-do run } */
/* { dg-require-effective-target avx } */
/* { dg-options "-O2 -mavx -DNEED_IEEE754_DOUBLE" } */
/* { dg-warning "attribute ignored" "" { target default_packed } 164 } */
/* { dg-message " from " "include chain" { target default_packed } 0 } */
#include "avx-check.h"
...
From the patch posting here (
https://gcc.gnu.org/ml/gcc-patches/2009-07/msg01303.html ) I understand that
the line number is related to two ieee754 unions with packed attribute in
m128-check.h.
Looking at m128-check.h we see that neither of the unions is at line 164:
...
161 } \
162 return err; \
163 }
164
165 CHECK_FP_ARRAY (d, double, ESP_DOUBLE, "%f")
166 CHECK_FP_ARRAY (f, float, ESP_FLOAT, "%f")
167
168 #ifdef NEED_IEEE754_FLOAT
169 union ieee754_float
170 {
171 float d;
172 struct
173 {
174 unsigned long frac : 23;
175 unsigned exp : 8;
176 unsigned sign : 1;
177 } bits __attribute__((packed));
178 };
179 #endif
180
181 #ifdef NEED_IEEE754_DOUBLE
182 union ieee754_double
183 {
184 double d;
185 struct
186 {
187 unsigned long frac1 : 32;
188 unsigned long frac0 : 20;
189 unsigned exp : 11;
190 unsigned sign : 1;
191 } bits __attribute__((packed));
192 };
193 #endif
...
I suspect that since netware support was removed in 2011, the
default_packed-guarded directives have not been run, which allowed the line
numbers of the unions to change silently.
Perhaps we should revert the patch.
