[Bug c++/89858] crash with libmpfr.so.6
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89858 --- Comment #10 from Hans Buchmann --- Thank you. Hans Buchmann
[Bug c++/89858] crash with libmpfr.so.6
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89858 --- Comment #8 from Hans Buchmann --- Created attachment 46054 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46054&action=edit /proc/cpuinfo Sincerely Hans Buchmann
[Bug c++/89858] crash with libmpfr.so.6
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89858 --- Comment #6 from Hans Buchmann --- Created attachment 46048 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46048&action=edit Disassemly
[Bug c++/89858] crash with libmpfr.so.6
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89858 --- Comment #4 from Hans Buchmann --- Created attachment 46045 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46045&action=edit The gbd output With the help of our sysadmin Peter Schlachter we managed the following output, hopefully helpful for you. Sincerely Hans Buchmann
[Bug c++/89858] crash with libmpfr.so.6
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89858
--- Comment #2 from Hans Buchmann ---
Source from:
MPFR Version 4.0.1 from https://www.mpfr.org
made with:
TC=where to install
${MPFR_SRC}/configure \
--prefix=${TC} \
--with-gmp=${TC}
#
${MAKE}
${MAKE} install
A fake link:
libmpfr.so.6 -> /usr/lib64/libmpfr.so.4.1.1
to the original works perfectly
Sincerely
Hans Buchmann
[Bug c++/89858] New: crash with libmpfr.so.6
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89858
Bug ID: 89858
Summary: crash with libmpfr.so.6
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: hans.buchmann at fhnw dot ch
Target Milestone: ---
Compiling the code:
--
static const unsigned LEN=2;
unsigned data[LEN];
void start()
{
for(unsigned i=0;ihttps://gcc.gnu.org/bugs/> for instructions.
--
../tc/bin/nios2-linux-gnu-g++ -v
--
Using built-in specs.
COLLECT_GCC=../tc/bin/nios2-linux-gnu-g++
COLLECT_LTO_WRAPPER=/home/adm/hans.buchmann/qsc/arch/nios2/tc/bin/../libexec/gcc/nios2-linux-gnu/8.3.0/lto-wrapper
Target: nios2-linux-gnu
Configured with: /home/buchmann/resources/gcc-8.3.0/configure
--prefix=/home/buchmann/devel/superfluous/eo3s/nios2/tc-build/../tc
--with-gmp=/home/buchmann/devel/superfluous/eo3s/nios2/tc-build/../tc
--with-mpfr=/home/buchmann/devel/superfluous/eo3s/nios2/tc-build/../tc
--with-mpc-include=/home/buchmann/devel/superfluous/eo3s/nios2/tc-build/../tc/include
--with-mpc-lib=/home/buchmann/devel/superfluous/eo3s/nios2/tc-build/../tc/lib
--target=nios2-linux-gnu
--disable-nls
--disable-werror
--enable-languages=c,c++
--disable-threads
--disable-nls
--disable-__cxa_atexit
--with-as=/home/buchmann/devel/superfluous/eo3s/nios2/tc-build/../tc/nios2-linux-gnu/bin//as
--with-ld=/home/buchmann/devel/superfluous/eo3s/nios2/tc-build/../tc/nios2-linux-gnu/bin//ld
--with-newlib
--with-sysroot
--without-headers
--disable-libssp
--enable-lto
--disable-shared
Thread model: single
gcc version 8.3.0 (GCC)
Some remarks:
- the -O2 seems to be relevant
- Surprisingly the crash occurs only with libmpfr.so.6
- uname -a
Linux v90 3.10.0-514.el7.x86_64 #1 SMP
Wed Oct 19 11:24:13 EDT 2016 x86_64 x86_64 x86_64 GNU/Linux
Sincerely
Hans Buchmann
[Bug c++/86917] New: ICE in verify_ctor_sanity, at cp/constexpr.c:2798
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86917
Bug ID: 86917
Summary: ICE in verify_ctor_sanity, at cp/constexpr.c:2798
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: hans.buchmann at fhnw dot ch
Target Milestone: ---
Created attachment 44526
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44526&action=edit
The Bug
Compiling the (wrong) code
--8<--8<--8<--8<--8<--8<--8<--
struct Byte
{
constexpr Byte():c(0){}
static const Byte Zero;
unsigned c;
};
struct Word
{
typedef Byte W[4];
constexpr Word():w({Byte::Zero,Byte::Zero,Byte::Zero,Byte::Zero}){}
W w;
};
struct AES256
{
AES256();
Word w[60];
};
AES256::AES256()
{
}
--8<--8<--8<--8<--8<--8<--8<--
with
g++ -c -o bug.o bug.cc
results in:
--8<--8<--8<--8<--8<--8<--8<--
bug.cc: In constructor \u2018AES256::AES256()\u2019:
bug.cc:21:16: in \u2018constexpr\u2019 expansion of \u2018Word()\u2019
bug.cc:21:16: internal compiler error: in verify_ctor_sanity, at
cp/constexpr.c:2798
AES256::AES256()
^
Please submit a full bug report,
with preprocessed source if appropriate.
--8<--8<--8<--8<--8<--8<--8<--
g++ -v
--8<--8<--8<--8<--8<--8<--8<--
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/8.2.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib \
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info \
--with-bugurl=https://bugs.archlinux.org/ \
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ \
--enable-shared --enable-threads=posix --enable-libmpx \
--with-system-zlib --with-isl --enable-__cxa_atexit \
--disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch \
--disable-libssp --enable-gnu-unique-object --enable-linker-build-id \
--enable-lto --enable-plugin --enable-install-libiberty
--with-linker-hash-style=gnu\
--enable-gnu-indirect-function --enable-multilib --disable-werror \
--enable-checking=release --enable-default-pie --enable-default-ssp
--enable-cet=auto
Thread model: posix
gcc version 8.2.0 (GCC)
--8<--8<--8<--8<--8<--8<--8<--
Sincerely
Hans Buchmann
[Bug c/86217] New: option aux-info
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86217
Bug ID: 86217
Summary: option aux-info
Product: gcc
Version: 8.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: hans.buchmann at fhnw dot ch
Target Milestone: ---
Created attachment 44297
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44297&action=edit
The output file
Compiling the code
static inline int arch_within_stack_frames(const void * const stack,
const void * const stackend,
const void *obj, unsigned long len)
{
return 0;
}
static int arch_within_stack_frames(const void * const stack,
const void * const stackend,
const void *obj, unsigned long len);
---
with
gcc -aux-info aux-info.data \
-c \
-oaux-info.o \
aux-info.c
yields for aux-info.data:
---
/* compiled from: . */
/* aux-info.c:2:NF */
static int arch_within_stack_frames (const void *const const stack, const void
*const const stackend, const void *obj, long unsigned int len);
// !!twice
const
/* (stack, stackend, obj, len) const void *const const stack; const void *const
const stackend; const void *obj; long unsigned int len; */
/* aux-info.c:10:NC */
static int arch_within_stack_frames (const void *const , const void *const ,
const void *, long unsigned int);
it seems that the keyword 'inline' doubles the keyword const.
gcc -v:
Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --enable-libmpx --with-system-zlib --with-isl
--enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu
--disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object
--enable-linker-build-id --enable-lto --enable-plugin
--enable-install-libiberty --with-linker-hash-style=gnu
--enable-gnu-indirect-function --enable-multilib --disable-werror
--enable-checking=release --enable-default-pie --enable-default-ssp
Thread model: posix
gcc version 8.1.1 20180531 (GCC)
Sincerely
Hans Buchmann
[Bug target/71419] interrupt attribute silently dropped for Thumb code on armv7-a
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71419
--- Comment #2 from Hans Buchmann ---
The code is produced in arm mode:
.file "irq.cc"
.text
.align 2
.global _Z5_irq_v
.syntax unified
.arm <--- here
.fpu softvfp
.type _Z5_irq_v, %function
_Z5_irq_v:
.fnstart
.LFB0:
@ Interrupt Service Routine.
@ args = 0, pretend = 0, frame = 0
@ frame_needed = 0, uses_anonymous_args = 0
sub lr, lr, #4
push{r0, r1, r2, r3, ip, lr}
.save {r0, r1, r2, r3, ip, lr}
bl _Z8externalv
pop {r0, r1, r2, r3, ip, pc}^
.fnend
.size _Z5_irq_v, .-_Z5_irq_v
.ident "GCC: (GNU) 6.1.0"
compiling with -mthumb yields the correct error:
../src/irq.cc: In function 'void _irq_()':
../src/irq.cc:11:1: error: interrupt Service Routines cannot be coded in Thumb
mode
}
[Bug c++/71419] New: cortex-a9 IRQ
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71419
Bug ID: 71419
Summary: cortex-a9 IRQ
Product: gcc
Version: 6.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: hans.buchmann at fhnw dot ch
Target Milestone: ---
Compiling the code:
extern void external();
__attribute__ ((interrupt("IRQ"))) void _irq_() ;
void _irq_()
{
external();
}
with gcc 6.1.0 results in:
Disassembly of section .text:
<_Z5_irq_v>:
0: e24ee004sub lr, lr, #4
4: e92d500fpush{r0, r1, r2, r3, ip, lr}
8: ebfebl 0 <_Z8externalv>
c: e8bd900fpop {r0, r1, r2, r3, ip, pc} < here
The instruction:
e8bd900f pop {r0, r1, r2, r3, ip, pc}
compared to:
e8fd900f ldm sp!, {r0, r1, r2, r3, ip, pc}^
dont copy the SPSR back into the CPSR
The call:
${TC}/bin/arm-none-eabi-g++ -O2 -mcpu=cortex-a9 \
-c -o irq.o ../src/irq.cc
The Compiler g++ -v
Using built-in specs.
COLLECT_GCC=../tc/bin/arm-none-eabi-g++
COLLECT_LTO_WRAPPER=/home/buchmann/devel/gcc/target/arm/libexec/gcc/arm-none-eabi/6.1.0/lto-wrapper
Target: arm-none-eabi
Configured with: /home/buchmann/devel/gcc/dist/gcc-6.1/configure -v
--prefix=/home/buchmann/devel/gcc/target/arm --target=arm-none-eabi
--enable-languages=c,c++ --disable-threads --disable-nls --disable-__cxa_atexit
--with-as=/home/buchmann/devel/gcc/target/arm/arm-none-eabi/bin/as
--with-ld=/home/buchmann/devel/gcc/target/arm/arm-none-eabi/bin/ld
--with-newlib --with-sysroot --without-headers --disable-libssp --enable-lto
--disable-shared --enable-multilib
Thread model: single
gcc version 6.1.0 (GCC)
Kind regards
Hans Buchmann
