https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77775
Bug ID: 77775
Summary: [7 Regression] since r238559 Kdevelop gets miscompiled
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: trippels at gcc dot gnu.org
CC: jason at gcc dot gnu.org
Target Milestone: ---
Created attachment 39717
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39717&action=edit
unreduced testcase
Starting with r238559:
commit 5157eff877f9491e7c0fc9231ac2b686983eaa41
Author: jason <jason@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu Jul 21 06:05:33 2016 +0000
PR c++/71121 - -Waddress, constexpr, and PMFs.
* cp-gimplify.c (cp_fully_fold): First call maybe_constant_value.
Kdevelop gets miscompiled and crashes on startup.
I've narrowed the issue to a single file.
See the attachments.
x4 sublime # diff -u good_ bad_
--- good_ 2016-09-28 12:37:52.508094930 +0200
+++ bad_ 2016-09-28 14:24:11.674668521 +0200
@@ -1016,7 +1016,7 @@
pushq %r13
pushq %r12
pushq %rbx
- subq $376, %rsp
+ subq $216, %rsp
.cfi_offset 15, -24
.cfi_offset 14, -32
.cfi_offset 13, -40
@@ -1337,19 +1337,15 @@
movq 8(%rax), %rax
movq %rax, -72(%rbp)
movq -72(%rbp), %rax
- movq (%rax), %rdx
- movq
_ZN7Sublime4Area9viewAddedEPNS_9AreaIndexEPNS_4ViewE@GOTPCREL(%rip), %rax
- movq %rax, %r8
- movl $0, %r9d
- movq %r8, %rax
- cmpq %rax, %rdx
+ movq (%rax), %rax
+ testq %rax, %rax
jne .L87
movq -72(%rbp), %rax
movq 8(%rax), %rdx
movq
_ZN7Sublime4Area9viewAddedEPNS_9AreaIndexEPNS_4ViewE@GOTPCREL(%rip), %rax
- movq %rax, %r10
- movl $0, %r11d
- movq %r11, %rax
+ movq %rax, %r8
+ movl $0, %r9d
+ movq %r9, %rax
cmpq %rax, %rdx
je .L88
movq -72(%rbp), %rax
@@ -1362,19 +1358,15 @@
jmp .L55
.L87:
movq -72(%rbp), %rax
- movq (%rax), %rdx
- movq
_ZN7Sublime4Area17aboutToRemoveViewEPNS_9AreaIndexEPNS_4ViewE@GOTPCREL(%rip),
%rax
- movq %rax, %r12
- movl $0, %r13d
- movq %r12, %rax
- cmpq %rax, %rdx
+ movq (%rax), %rax
+ testq %rax, %rax
jne .L89
movq -72(%rbp), %rax
movq 8(%rax), %rdx
movq
_ZN7Sublime4Area17aboutToRemoveViewEPNS_9AreaIndexEPNS_4ViewE@GOTPCREL(%rip),
%rax
- movq %rax, %r14
- movl $0, %r15d
- movq %r15, %rax
+ movq %rax, %r10
+ movl $0, %r11d
+ movq %r11, %rax
cmpq %rax, %rdx
je .L90
movq -72(%rbp), %rax
...
