* [Bug default/27598] New: abidiff mishandles union member functions
@ 2021-03-17 21:59 gprocida+abigail at google dot com
2021-03-30 10:57 ` [Bug default/27598] " dodji at redhat dot com
2021-04-06 10:51 ` dodji at redhat dot com
0 siblings, 2 replies; 3+ messages in thread
From: gprocida+abigail at google dot com @ 2021-03-17 21:59 UTC (permalink / raw)
To: libabigail
https://sourceware.org/bugzilla/show_bug.cgi?id=27598
Bug ID: 27598
Summary: abidiff mishandles union member functions
Product: libabigail
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: default
Assignee: dodji at redhat dot com
Reporter: gprocida+abigail at google dot com
CC: libabigail at sourceware dot org
Target Milestone: ---
I was originally investigating "harmless union" changes when I managed to crash
abidiff when adding member functions to unions.
SEGV #1
$ head ?.cc
==> 1.cc <==
union S {
void bar() const { }
int needed;
};
void fun(S s) { s.bar(); }
==> 2.cc <==
union S {
void bar() const { }
};
void fun(S s) { s.bar(); }
$ for x in ?.cc; do g++ -Wall -Wextra -g -c $x; done
$ abidiff ?.o
Functions changes summary: 0 Removed, 2 Changed, 0 Added functions
Variables changes summary: 0 Removed, 0 Changed, 0 Added variable
2 functions with some indirect sub-type change:
[C] 'method void S::bar() const' at 2.cc:2:1 has some indirect sub-type
changes:
Segmentation fault
SEGV #2
$ head ?.cc
==> 1.cc <==
union S {
void bar() const { }
int needed;
};
void fun(S s) { s.bar(); }
==> 2.cc <==
struct S {
void bar() const { }
};
void fun(S s) { s.bar(); }
$ for x in ?.cc; do g++ -Wall -Wextra -g -c $x; done
$ abidiff ?.o
Functions changes summary: 0 Removed, 2 Changed, 0 Added functions
Variables changes summary: 0 Removed, 0 Changed, 0 Added variable
2 functions with some indirect sub-type change:
[C] 'method void S::bar() const' at 2.cc:2:1 has some indirect sub-type
changes:
Segmentation fault
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2021-03-17 21:59 [Bug default/27598] New: abidiff mishandles union member functions gprocida+abigail at google dot com
2021-03-30 10:57 ` [Bug default/27598] " dodji at redhat dot com
2021-04-06 10:51 ` dodji at redhat dot com
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