https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115278
Jorn Wolfgang Rennecke <amylaar at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |amylaar at gcc dot gnu.org
--- Comment #12 from Jorn Wolfgang Rennecke <amylaar at gcc dot gnu.org> ---
On a newlib based toolchain with gcc 14.2, the test fails:
Excess errors:
/home/amylaar/riscy-ip/gcc14/gcc/trunk/gcc/gcc/testsuite/g++.dg/vect/pr115278.cc:24:28:
error: invalid conversion from 'volatile unsigned int*' to 'volatile uint32_t*'
{aka 'volatile long unsigned int*'} [-fpermissive]
g++.dg/vect/pr115278.cc -std=c++14 : dump file does not exist
excerpt from the preprocessed file:
# 37
"/home/amylaar/riscy-ip/gcc14/gcc/trunk/gcc/newlib/libc/include/machine/_default_types.h"
3 4
extern "C" {
...
# 77
"/home/amylaar/riscy-ip/gcc14/gcc/trunk/gcc/newlib/libc/include/machine/_default_types.h"
3 4
typedef long int __int32_t;
typedef long unsigned int __uint32_t;
...
# 15
"/home/amylaar/riscy-ip/gcc14/gcc/trunk/gcc/newlib/libc/include/sys/_stdint.h"
3 4
extern "C" {
...
typedef __uint32_t uint32_t ;
I tried to add -fpermissive, but that still gives a warning that ends up as
excess errors.
There doesn't seem to be any specific option to suppress this warning, just -w.
So, should we add:
// { dg-additional-options "-fpermissive -w" { target newlib } }
or should we do something like:
Index: g++.dg/vect/pr115278.cc
===================================================================
--- g++.dg/vect/pr115278.cc (revision 6673)
+++ g++.dg/vect/pr115278.cc (working copy)
@@ -1,6 +1,7 @@
// { dg-do compile }
// { dg-require-effective-target c++11 }
// { dg-additional-options "-fdump-tree-optimized" }
+// { dg-additional-options "-fpermissive" { target newlib } }
#include <cstdint>
@@ -21,7 +22,7 @@
BitfieldStructUnion(uint32_t value_low, uint32_t value_high) :
value_low(value_low), value_high(value_high) {}
};
-volatile uint32_t *WRITE = (volatile unsigned*)0x42;
+volatile uint32_t *WRITE = (volatile unsigned*)0x42; // { dg-warning "invalid
conversion" { target newlib } }
void buggy() {
for (int i = 0; i < runs; i++) {
