[Bug bootstrap/65865] New: [6 Regression] Bootstrap failure on x86

[Bug bootstrap/65865] New: [6 Regression] Bootstrap failure on x86

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65865

            Bug ID: 65865
           Summary: [6 Regression] Bootstrap failure on x86
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com

On Linux/x86, r222380 gave

libtool: compile:  /export/build/gnu/gcc/build-x86_64-linux/./gcc/xgcc
-shared-libgcc -B/export/build/gnu/gcc/build-x86_64-linux/./gcc -nostdinc++
-L/export/build/gnu/gcc/build-x86_64-linux/x86_64-unknown-linux-gnu/32/libstdc++-v3/src
-L/export/build/gnu/gcc/build-x86_64-linux/x86_64-unknown-linux-gnu/32/libstdc++-v3/src/.libs
-L/export/build/gnu/gcc/build-x86_64-linux/x86_64-unknown-linux-gnu/32/libstdc++-v3/libsupc++/.libs
-B/usr/gcc-6.0.0/x86_64-unknown-linux-gnu/bin/
-B/usr/gcc-6.0.0/x86_64-unknown-linux-gnu/lib/ -isystem
/usr/gcc-6.0.0/x86_64-unknown-linux-gnu/include -isystem
/usr/gcc-6.0.0/x86_64-unknown-linux-gnu/sys-include -m32 -D_GNU_SOURCE -D_DEBUG
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
-DHAVE_RPC_XDR_H=1 -DHAVE_TIRPC_RPC_XDR_H=0 -I.
-I/export/gnu/import/git/sources/gcc/libsanitizer/sanitizer_common -I.. -I
/export/gnu/import/git/sources/gcc/libsanitizer/include -isystem
/export/gnu/import/git/sources/gcc/libsanitizer/include/system -Wall -W
-Wno-unused-parameter -Wwrite-strings -pedantic -Wno-long-long -fPIC
-fno-builtin -fno-exceptions -fno-rtti -fomit-frame-pointer -funwind-tables
-fvisibility=hidden -Wno-variadic-macros -I../../libstdc++-v3/include
-I../../libstdc++-v3/include/x86_64-unknown-linux-gnu
-I/export/gnu/import/git/sources/gcc/libsanitizer/../libstdc++-v3/libsupc++
-std=gnu++11 -DSANITIZER_LIBBACKTRACE -DSANITIZER_CP_DEMANGLE -I
/export/gnu/import/git/sources/gcc/libsanitizer/../libbacktrace -I
../libbacktrace -I /export/gnu/import/git/sources/gcc/libsanitizer/../include
-include
/export/gnu/import/git/sources/gcc/libsanitizer/libbacktrace/backtrace-rename.h
-O2 -g -D_GNU_SOURCE -m32 -MT sanitizer_linux_libcdep.lo -MD -MP -MF
.deps/sanitizer_linux_libcdep.Tpo -c
/export/gnu/import/git/sources/gcc/libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cc
 -fPIC -DPIC -o .libs/sanitizer_linux_libcdep.o
/export/gnu/import/git/sources/gcc/libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cc:
In function ‘void __sanitizer::InitTlsSize()’:
/export/gnu/import/git/sources/gcc/libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cc:173:29:
error: invalid conversion from ‘get_tls_func {aka void (__attribute__((stdcall,
regparm(3))) *)(unsigned int*, unsigned int*)}’ to ‘void (*)(unsigned int*,
unsigned int*)’ [-fpermissive]
   IndirectExternCall(get_tls)(&tls_size, &tls_align);
                             ^
In file included from
/export/gnu/import/git/sources/gcc/libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cc:16:0:
/export/gnu/import/git/sources/gcc/libsanitizer/sanitizer_common/sanitizer_common.h:529:3:
note:   initializing argument 1 of ‘F __sanitizer::IndirectExternCall(F) [with
F = void (*)(unsigned int*, unsigned int*)]’
 F IndirectExternCall(F f) {
   ^
make[8]: *** [sanitizer_linux_libcdep.lo] Error 1
>From gcc-bugs-return-484502-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Apr 23 17:34:45 2015
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From: "o_kniemeyer at maxon dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/65866] New: Wrong warning when using list-initialization: operation on 'b' may be undefined [-Wsequence-point]
Date: Thu, 23 Apr 2015 17:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide866

            Bug ID: 65866
           Summary: Wrong warning when using list-initialization:
                    operation on 'b' may be undefined [-Wsequence-point]
           Product: gcc
           Version: 5.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: o_kniemeyer at maxon dot net

This is related to Bug 51253: While that bug was about wrong compiled code and
is reported to be fixed, GCC 5.1.0 still produces a warning in code like

struct X
{
  template <typename... ARGS> X(ARGS&&...);
};

void test()
{
  bool b = false;
  X{b = true, b = true};
}

warning: operation on 'b' may be undefined [-Wsequence-point]

Because list-initialization has to be done from left to right, the warning is
wrong.

[Bug bootstrap/65865] [6 Regression] Bootstrap failure on x86

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65865

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-04-23
                 CC|                            |jason at redhat dot com
   Target Milestone|---                         |6.0
     Ever confirmed|0                           |1

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
It is caused by r222377.

[Bug bootstrap/65865] [6 Regression] Bootstrap failure on x86

[hjl.tools at gmail dot com]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="UTF-8", Size: 3909 bytes --]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65865

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
[hjl@gnu-6 gcc]$ cat /tmp/x.cc 
extern unsigned long indirect_call_wrapper;

typedef  unsigned long size_t;

template <typename F>
F IndirectExternCall(F f) {
  typedef F (*WrapF)(F);
  return indirect_call_wrapper ? ((WrapF)indirect_call_wrapper)(f) : f;
}

typedef void (*get_tls_func)(size_t*, size_t*) __attribute__((regparm(3),
stdcall));

void
foo (void *get_tls_static_info_ptr)
{
  get_tls_func get_tls;
  __builtin_memcpy (&get_tls, &get_tls_static_info_ptr,
            sizeof(get_tls_static_info_ptr));
  size_t tls_size = 0;
  size_t tls_align = 0;
  IndirectExternCall (get_tls)(&tls_size, &tls_align);
}
[hjl@gnu-6 gcc]$ ./xgcc -B./ -S -m32 -O2 /tmp/x.cc
/tmp/x.cc: In function ‘void foo(void*)’:
/tmp/x.cc:21:30: error: invalid conversion from ‘get_tls_func {aka void
(__attribute__((stdcall, regparm(3))) *)(long unsigned int*, long unsigned
int*)}’ to ‘void (*)(long unsigned int*, long unsigned int*)’ [-fpermissive]
   IndirectExternCall (get_tls)(&tls_size, &tls_align);
                              ^
/tmp/x.cc:6:3: note:   initializing argument 1 of ‘F IndirectExternCall(F)
[with F = void (*)(long unsigned int*, long unsigned int*)]’
 F IndirectExternCall(F f) {
   ^
[hjl@gnu-6 gcc]$
>From gcc-bugs-return-484512-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Apr 23 19:13:03 2015
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From: "daniel.f.starke at freenet dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/65867] New: [5 Regression] bootstrap fails for mingw32 due to missing header in ssp.c
Date: Thu, 23 Apr 2015 19:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide867

            Bug ID: 65867
           Summary: [5 Regression] bootstrap fails for mingw32 due to
                    missing header in ssp.c
           Product: gcc
           Version: 5.1.0
            Status: UNCONFIRMED
          Severity: trivial
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: daniel.f.starke at freenet dot de

Created attachment 35392
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id5392&actioníit
patch

Bootstrapping gcc 5.1 with ming32 (not mingw32-w64) fails due to missing
include of wincrypt.h within ssp.c. See attachment for a possible patch.

[Bug bootstrap/65865] [6 Regression] Bootstrap failure on x86

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65865

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at gcc dot gnu.org

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
OK, reverted temporarily.

[Bug bootstrap/65865] [6 Regression] Bootstrap failure on x86

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65865

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.

[Bug bootstrap/65865] [6 Regression] Bootstrap failure on x86

[vmakarov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65865

Vladimir Makarov <vmakarov at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vmakarov at gcc dot gnu.org

--- Comment #5 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Created attachment 35502
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35502&action=edit
ira-hook.patch

Here is the patch introducing the hook.  Could you try it and give me your
opinion.  Thanks.

[Bug bootstrap/65865] [6 Regression] Bootstrap failure on x86

[vmakarov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65865

--- Comment #6 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Vladimir Makarov from comment #5)
> Created attachment 35502 [details]
> ira-hook.patch
> 
> Here is the patch introducing the hook.  Could you try it and give me your
> opinion.  Thanks.

Sorry, wrong place.  Please ignore the patch.