https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52991
--- Comment #26 from Benjamin Robin ---
I try to work on this bug, by curiosity... And I did found 3 bug in the current
layout of structure when ms_bitfield_layout_p = 1:
**
1) Basic packing (the failing test):
-
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52991
--- Comment #30 from Benjamin Robin ---
The test cases bf-ms-layout.c and bf-ms-layout-2.c are valid.
You can test it with an online compiler, for example:
http://rextester.com/l/c_online_compiler_visual
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52991
--- Comment #34 from Benjamin Robin ---
Thank you a lot for the fix.
I have no idea what I did yesterday when I did test bf-ms-layout-2.c (Yes the
test was wrong, and by default cannot compile under Visual Studio VC)
The test can be slightly imp
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dev at benjarobin dot fr
Target Milestone: ---
Created attachment 38487
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38487&action=edit
Source test case with the command line used
With GCC 6.1.1 2016050
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71115
--- Comment #1 from Benjamin Robin ---
Created attachment 38488
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38488&action=edit
Preprocessed by GCC source file t.c attached
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71115
--- Comment #2 from Benjamin Robin ---
Created attachment 38489
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38489&action=edit
Preprocessed by Clang source file t.c attached
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71115
--- Comment #3 from Benjamin Robin ---
If I preprocessed the source with clang then compile it with GCC, I do have the
warning. This looks like it is related to the way NULL is expanded.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71115
--- Comment #4 from Benjamin Robin ---
If I preprocessed the source with GCC then compile it with Clang, I do not have
the warning. Bug inside the compiler or the preprocessor ?
: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: dev at benjarobin dot fr
Target Milestone: ---
The warning is triggered with the following test case:
```
int dbg_ssat_out;
int dbg_ssat_in;
void test_arm_ssat(void
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109939
--- Comment #2 from Benjamin Robin ---
New test case with exactly same problem since __ssat() calls
__builtin_arm_ssat():
```
#include
int dbg_ssat_out;
int dbg_ssat_in;
void test_arm_ssat(void)
{
dbg_ssat_out = __ssat(dbg_ssat_in, 16);
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