[Bug bootstrap/113445] New: [14 Regression] bootstrap failure on f95-lang.cc: ‘-fcompare-debug’ failure

[Bug bootstrap/113445] New: [14 Regression] bootstrap failure on f95-lang.cc: ‘-fcompare-debug’ failure

[slyfox at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113445

            Bug ID: 113445
           Summary: [14 Regression] bootstrap failure on f95-lang.cc:
                    ‘-fcompare-debug’ failure
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: slyfox at gcc dot gnu.org
  Target Milestone: ---

Noticed bootstrap failure on today's gcc-master from r14-8179-g97089a54f7529a:

  $ ~/dev/git/gcc/configure --disable-multilib CFLAGS='-O1 -g0' CXXFLAGS='-O1
-g0' LDFLAGS='-O1 -g0'

  Comparing stages 2 and 3
  Bootstrap comparison failure!

Minimized example:

// $ cat f95-lang.cc.cc
int global_options_3, gfc_init_builtin_functions_builtin_types_0,    
gfc_init_builtin_functions_builtin_types_26,    
gfc_init_builtin_functions_builtin_types_3,    
gfc_init_builtin_functions_builtin_types_17,    
gfc_init_builtin_functions_builtin_types_12,    
gfc_init_builtin_functions_builtin_types_2;
    int *global_trees_7, *global_trees_0, *integer_types_1, *integer_types_0;
    int *build_pointer_type(int *);
    int *build_function_type_list(...);
    int *gfc_type_for_size(unsigned, int);
    void gfc_define_builtin(int *, int);
    void gfc_init_builtin_functions() {
     int *__trans_tmp_4, *__trans_tmp_3, *__trans_tmp_2, *builtin_types_45,    
  *builtin_types_39, *builtin_types_34, *builtin_types_19,      
*builtin_types_11, *builtin_types_6, *builtin_types_5,       *builtin_types_4 =
integer_types_0;
     int builtin_types_16, builtin_types_15, builtin_types_1;
     builtin_types_5 = integer_types_1;
     builtin_types_6 = global_trees_7;
     int *type = gfc_type_for_size(0, 1);
     __trans_tmp_2 = __trans_tmp_3 = type ?: global_trees_0;
     __trans_tmp_4 = global_trees_0;
     builtin_types_11 = build_function_type_list();
     builtin_types_19 =      
build_pointer_type(&gfc_init_builtin_functions_builtin_types_17);
     build_function_type_list(builtin_types_15);
     build_function_type_list(builtin_types_16);
     build_function_type_list();
     build_function_type_list(gfc_init_builtin_functions_builtin_types_12,     
                      __trans_tmp_4, __null);
     build_function_type_list();
     build_function_type_list();
     build_function_type_list();
     build_function_type_list(__trans_tmp_3);
     build_function_type_list(__trans_tmp_4);
     build_function_type_list();
     build_pointer_type(&gfc_init_builtin_functions_builtin_types_26);
     build_function_type_list();
     build_function_type_list(builtin_types_1,                           
gfc_init_builtin_functions_builtin_types_12,                           
__trans_tmp_3, __null);
     builtin_types_34 = build_function_type_list(      
gfc_init_builtin_functions_builtin_types_12, __trans_tmp_4, __null);
     build_function_type_list(gfc_init_builtin_functions_builtin_types_12,     
                      __trans_tmp_2, __null);
     build_function_type_list(__trans_tmp_3, __null);
     build_function_type_list(__null);
     build_function_type_list(__null);
     builtin_types_39 = build_function_type_list();
     build_function_type_list(__null);
     build_function_type_list(gfc_init_builtin_functions_builtin_types_0,      
                     builtin_types_19, builtin_types_11,                       
    gfc_init_builtin_functions_builtin_types_3,                           
gfc_init_builtin_functions_builtin_types_3,                           
gfc_init_builtin_functions_builtin_types_3, __null);
     builtin_types_45 = build_function_type_list(       builtin_types_1,
builtin_types_4, builtin_types_4, builtin_types_4,       builtin_types_15,
builtin_types_15, __null);
     build_function_type_list(      
gfc_init_builtin_functions_builtin_types_0, builtin_types_6,      
gfc_init_builtin_functions_builtin_types_12, builtin_types_11,      
builtin_types_11, gfc_init_builtin_functions_builtin_types_2, __null);
     build_function_type_list(gfc_init_builtin_functions_builtin_types_0,      
                     gfc_init_builtin_functions_builtin_types_2,               
            builtin_types_6, builtin_types_11, builtin_types_11,               
            builtin_types_11, __null);
     build_function_type_list(builtin_types_1,                           
gfc_init_builtin_functions_builtin_types_3,                           
builtin_types_15, builtin_types_4, builtin_types_15,                           
builtin_types_15, __null);
     build_function_type_list(       builtin_types_1,
gfc_init_builtin_functions_builtin_types_3,       builtin_types_16,
builtin_types_5, builtin_types_16, builtin_types_4,       builtin_types_4,
builtin_types_15, builtin_types_1, builtin_types_1,       builtin_types_5,
builtin_types_5, builtin_types_5, builtin_types_16,       builtin_types_16);
     gfc_define_builtin(builtin_types_34, 0);
     gfc_define_builtin(builtin_types_39, 6);
     if (global_options_3)     gfc_define_builtin(builtin_types_45, 0);
   }

Triggering:

$ stage3-gcc/xg++ -Bstage3-gcc -O2 -c f95-lang.cc.cc -o bug.o -fcompare-debug
xg++: error: f95-lang.cc.cc: ‘-fcompare-debug’ failure

$ stage3-gcc/xg++ -Bstage3-gcc -v
Reading specs from stage3-gcc/specs
COLLECT_GCC=stage3-gcc/xg++
COLLECT_LTO_WRAPPER=stage3-gcc/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /home/slyfox/dev/git/gcc/configure --disable-multilib
CFLAGS='-O1 -g0' CXXFLAGS='-O1 -g0' LDFLAGS='-O1 -g0'
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 14.0.1 20240117 (experimental) (GCC)

[Bug bootstrap/113445] [14 Regression] bootstrap failure on f95-lang.cc: ‘-fcompare-debug’ failure

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113445

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |mkuvyrkov at gcc dot gnu.org
   Target Milestone|---                         |14.0
           Priority|P3                          |P1

[Bug bootstrap/113445] [14 Regression] bootstrap failure on f95-lang.cc: ‘-fcompare-debug’ failure since r14-8174

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113445

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[14 Regression] bootstrap   |[14 Regression] bootstrap
                   |failure on f95-lang.cc:     |failure on f95-lang.cc:
                   |‘-fcompare-debug’ failure   |‘-fcompare-debug’ failure
                   |                            |since r14-8174

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r14-8174-g0c42d1782e48d8ad578ace2065cce9b3615f97c0

[Bug bootstrap/113445] [14 Regression] bootstrap failure on f95-lang.cc: ‘-fcompare-debug’ failure since r14-8174

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113445

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 113449 has been marked as a duplicate of this bug. ***

[Bug bootstrap/113445] [14 Regression] bootstrap failure on f95-lang.cc: ‘-fcompare-debug’ failure since r14-8174

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113445

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |compare-debug-failure
   Last reconfirmed|                            |2024-01-17
             Status|UNCONFIRMED                 |NEW
             Target|                            |x86_64-*-*
     Ever confirmed|0                           |1

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.

[Bug bootstrap/113445] [14 Regression] bootstrap failure on f95-lang.cc: ‘-fcompare-debug’ failure since r14-8174

[mkuvyrkov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113445

--- Comment #4 from Maxim Kuvyrkov <mkuvyrkov at gcc dot gnu.org> ---
Testing patch
https://gcc.gnu.org/pipermail/gcc-patches/2024-January/643267.html .

[Bug bootstrap/113445] [14 Regression] bootstrap failure on f95-lang.cc: ‘-fcompare-debug’ failure since r14-8174

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113445

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
My reduced testcase (C):
/* PR bootstrap/113445 */
/* { dg-do compile } */
/* { dg-options "-O2 -fcompare-debug -Wno-uninitialized" } */

enum E { F };
int *a, *b, *c, *d, e, f, g, h, i;
int *f1 (int *);
int *f2 (...);
int *f3 (int *, int);
int *f4 (unsigned, int);
int *f5 (enum E, int);
int *f6 (int, int);
enum E j;

void
f7 (void)
{
  int *k, *l, *m, *n, *o, *p, *q, *r, *s, *t, *u, *v, w, x, y, z, aa;
  v = f6 (0, 1);
  u = d;
  t = c;
  s = a;
  f4 (f, 1);
  f4 (f, 1);
  int *ab = f4 (f, 1);
  k = b;
  int ac = *f3 (&e, F);
  r = f1 (&ac);
  int ad = *f3 (&e, F);
  f1 (&ad);
  q = f5 (j, 0);
  p = f1 (t);
  f1 (o);
  f2 ();
  f2 ();
  f2 ();
  f2 ();
  f2 ();
  f2 ();
  f2 (z, z);
  f2 ();
  f2 ();
  f2 ();
  f1 (&h);
  f2 (z, k, ab, aa, r, g, (void *) 0);
  f2 (aa, w, &aa, r, k, (void *) 0);
  f2 (q, (void *) 0);
  f2 ();
  f2 (&aa, s, r, o, o, z, (void *) 0);
  n = f2 (s, (void *) 0);
  f2 (v, u, p, t, p, p, (void *) 0);
  m = f2 (v, u, x, y, x, x, (void *) 0);
  l = f2 (v);
  f2 (v, s);
  f2 (t, u);
  f2 (&aa, i, o, t, t, t, t);
  f2 (v, u, x, t, y, x, x, o, t, t, t, t, t);
  f2 (t);
  f2 (t, t, t, t, t, t, t, z, y);
  f2 (t, l, m, n);
}

[Bug bootstrap/113445] [14 Regression] bootstrap failure on f95-lang.cc: ‘-fcompare-debug’ failure since r14-8174

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113445

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hjl.tools at gmail dot com

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 113456 has been marked as a duplicate of this bug. ***

[Bug bootstrap/113445] [14 Regression] bootstrap failure on f95-lang.cc: ‘-fcompare-debug’ failure since r14-8174

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113445

--- Comment #7 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:a6bf09f65aed44d36acaa511e552783bfb0e9a62

commit r14-8231-ga6bf09f65aed44d36acaa511e552783bfb0e9a62
Author: Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org>
Date:   Thu Jan 18 14:45:27 2024 +0100

    Fix compare-debug bootstrap failure [PR113445]

    ... caused by scheduler fix for PR96388 and PR111554.

    This patch adjusts decision sched-deps.cc:find_inc() to use
    length of dependency lists sans any DEBUG_INSN instructions.

    gcc/ChangeLog

    2024-01-18  Maxim Kuvyrkov  <maxim.kuvyrkov@linaro.org>

            PR bootstrap/113445
            * haifa-sched.cc (dep_list_size): Make global.
            * sched-deps.cc (find_inc): Use instead of sd_lists_size().
            * sched-int.h (dep_list_size): Declare.

    gcc/testsuite/ChangeLog

    2024-01-18  Jakub Jelinek  <jakub@redhat.com>

            PR bootstrap/113445
            * gcc.dg/pr113445.c: New test.

[Bug bootstrap/113445] [14 Regression] bootstrap failure on f95-lang.cc: ‘-fcompare-debug’ failure since r14-8174

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113445

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

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

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Committed now.

[Bug bootstrap/113445] [14 Regression] bootstrap failure on f95-lang.cc: ‘-fcompare-debug’ failure since r14-8174

[mkuvyrkov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113445

--- Comment #9 from Maxim Kuvyrkov <mkuvyrkov at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #8)
> Committed now.

Thanks, Jakub.

[Bug bootstrap/113445] [14 Regression] bootstrap failure on f95-lang.cc: ‘-fcompare-debug’ failure since r14-8174

[slyfox at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113445

--- Comment #10 from Sergei Trofimovich <slyfox at gcc dot gnu.org> ---
The patch fixes bootstrap for me as well. Thank you!