question about illegal utf-8 encoding in string literals
Hello I work for Intel on the Intel C++ compiler and we strive to be compatible with the gnu compiler. We are processing a source file assuming utf-8 encoding and we see a string literal with illegal utf-8 encoding, such as an 8-bit character with the high bit set like 0xa3. Testing shows that gcc is passes the illegal utf-8 character through without diagnostic message, as though it were an "extended ascii" character. I don't see a way to enable warnings for this issue. Please confirm that gcc handles illegal utf-8 encodings this way. Thanks and regards, Melanie Blower
RE: Transactional memory test case reduction failure
There's probably something wrong with your "check.sh" causing it to not return 0. You need to debug the script. > -Original Message- > From: sameeran joshi [mailto:gsocsamee...@gmail.com] > Sent: Sunday, August 26, 2018 2:38 PM > To: gcc@gcc.gnu.org > Cc: Shubham Narlawar > Subject: Transactional memory test case reduction failure > > Hi, > I have found an ICE in the transaction memory extension while compiling a > program with gcc,but unfortunately for filing a bug in the gcc bugzilla I am > unable to reduce the buggy file with creduce . > > I have included the command line option -fgnu-tm while compiling it. > Does creduce support transactional memory for reduction? > > In the interestingness test script,it > always returns 1, also following message is displayed > > C-Reduce cannot run because the interestingness test does not return zero. > Please ensure that it does so not only in the directory where you are > invoking C- > Reduce, but also in an arbitrary temporary directory containing only the files > that are being reduced. In other words, running these commands: > > DIR=`mktemp -d` > cp /home/swamimauli/upload/csmith/runtime/del/testcase.c $DIR > cd $DIR > /home/swamimauli/upload/csmith/runtime/del/check.sh > echo $? > > should result in "0" being echoed to the terminal. > > See "creduce --help" for more information. > > Thanks, > Sameeran Joshi
RE: Transactional memory test case reduction failure
The –Wall option probably doesn’t make a difference, warning can be issued and the return code is still 0. I use creduce a lot. Usually I have a “reference” compilation as well as the failure compilation. In your case, possibly, the reference compilation would be to NOT use the –fsquiggle option (where squiggle enables the transactional memory). You need to work on your script until it returns 0. At that point you can start up creduce. Does your test have a main program? I think you probably want the “-c” option I’m not that fluent with bash scripting—I think your “if” statement might be wrong. Here’s a script that works for me in a different case, #!/bin/bash # # timeout 30s g++ -w -c test.c >/dev/null 2>&1 &&\ timeout 30s g++ -w –fsquiggle -c test.c 2>&1 | \ head -1 | grep "internal compiler error" >/dev/null 2>&1 notice the backslash turns it all into a single line. It requires g++ to compile successfully on the first line – I use timeout because sometimes the compiler goes into an infinite loop – the 2nd line requires the compiler to issue an internal error as the first line of output. Grep returns 0 if the pattern is found From: sameeran joshi [mailto:gsocsamee...@gmail.com] Sent: Monday, August 27, 2018 11:13 AM To: Blower, Melanie Cc: gcc@gcc.gnu.org; Shubham Narlawar Subject: Re: Transactional memory test case reduction failure Hi,thanks for helping. Below is the text file contain the shell script . I tried removing the compiler flags like -Wall,still it's giving output as 1. Please review. Thanks, Sameeran joshi On 27-Aug-2018 7:41 PM, "Blower, Melanie" mailto:melanie.blo...@intel.com>> wrote: There's probably something wrong with your "check.sh" causing it to not return 0. You need to debug the script. > -Original Message- > From: sameeran joshi > [mailto:gsocsamee...@gmail.com<mailto:gsocsamee...@gmail.com>] > Sent: Sunday, August 26, 2018 2:38 PM > To: gcc@gcc.gnu.org<mailto:gcc@gcc.gnu.org> > Cc: Shubham Narlawar mailto:gsocshub...@gmail.com>> > Subject: Transactional memory test case reduction failure > > Hi, > I have found an ICE in the transaction memory extension while compiling a > program with gcc,but unfortunately for filing a bug in the gcc bugzilla I am > unable to reduce the buggy file with creduce . > > I have included the command line option -fgnu-tm while compiling it. > Does creduce support transactional memory for reduction? > > In the interestingness test script,it > always returns 1, also following message is displayed > > C-Reduce cannot run because the interestingness test does not return zero. > Please ensure that it does so not only in the directory where you are > invoking C- > Reduce, but also in an arbitrary temporary directory containing only the files > that are being reduced. In other words, running these commands: > > DIR=`mktemp -d` > cp /home/swamimauli/upload/csmith/runtime/del/testcase.c $DIR > cd $DIR > /home/swamimauli/upload/csmith/runtime/del/check.sh > echo $? > > should result in "0" being echoed to the terminal. > > See "creduce --help" for more information. > > Thanks, > Sameeran Joshi
RE: Transactional memory test case reduction failure
I’m going to let you take it from here. I added notes in the bottom of previous message showing you how I would do it. From: Shubham Narlawar [mailto:gsocshub...@gmail.com] Sent: Monday, August 27, 2018 11:35 AM To: Blower, Melanie Cc: sameeran joshi ; gcc@gcc.gnu.org Subject: Re: Transactional memory test case reduction failure Here is the file. I am getting some error in sending .sh file, so I send it as below. #!/bin/bash gcc -fgnu-tm testcase.c > out.txt 2>&1 &&\ if grep 'internal compiler error' out.txt then exit 0 else exit 1 fi #! gcc -c -fgnu-tm testcase.c On Mon, Aug 27, 2018 at 8:59 PM Blower, Melanie mailto:melanie.blo...@intel.com>> wrote: The –Wall option probably doesn’t make a difference, warning can be issued and the return code is still 0. I use creduce a lot. Usually I have a “reference” compilation as well as the failure compilation. In your case, possibly, the reference compilation would be to NOT use the –fsquiggle option (where squiggle enables the transactional memory). You need to work on your script until it returns 0. At that point you can start up creduce. Does your test have a main program? I think you probably want the “-c” option I’m not that fluent with bash scripting—I think your “if” statement might be wrong. Here’s a script that works for me in a different case, #!/bin/bash # # timeout 30s g++ -w -c test.c >/dev/null 2>&1 &&\ timeout 30s g++ -w –fsquiggle -c test.c 2>&1 | \ head -1 | grep "internal compiler error" >/dev/null 2>&1 notice the backslash turns it all into a single line. It requires g++ to compile successfully on the first line – I use timeout because sometimes the compiler goes into an infinite loop – the 2nd line requires the compiler to issue an internal error as the first line of output. Grep returns 0 if the pattern is found From: sameeran joshi [mailto:gsocsamee...@gmail.com<mailto:gsocsamee...@gmail.com>] Sent: Monday, August 27, 2018 11:13 AM To: Blower, Melanie mailto:melanie.blo...@intel.com>> Cc: gcc@gcc.gnu.org<mailto:gcc@gcc.gnu.org>; Shubham Narlawar mailto:gsocshub...@gmail.com>> Subject: Re: Transactional memory test case reduction failure Hi,thanks for helping. Below is the text file contain the shell script . I tried removing the compiler flags like -Wall,still it's giving output as 1. Please review. Thanks, Sameeran joshi On 27-Aug-2018 7:41 PM, "Blower, Melanie" mailto:melanie.blo...@intel.com>> wrote: There's probably something wrong with your "check.sh" causing it to not return 0. You need to debug the script. > -Original Message- > From: sameeran joshi > [mailto:gsocsamee...@gmail.com<mailto:gsocsamee...@gmail.com>] > Sent: Sunday, August 26, 2018 2:38 PM > To: gcc@gcc.gnu.org<mailto:gcc@gcc.gnu.org> > Cc: Shubham Narlawar mailto:gsocshub...@gmail.com>> > Subject: Transactional memory test case reduction failure > > Hi, > I have found an ICE in the transaction memory extension while compiling a > program with gcc,but unfortunately for filing a bug in the gcc bugzilla I am > unable to reduce the buggy file with creduce . > > I have included the command line option -fgnu-tm while compiling it. > Does creduce support transactional memory for reduction? > > In the interestingness test script,it > always returns 1, also following message is displayed > > C-Reduce cannot run because the interestingness test does not return zero. > Please ensure that it does so not only in the directory where you are > invoking C- > Reduce, but also in an arbitrary temporary directory containing only the files > that are being reduced. In other words, running these commands: > > DIR=`mktemp -d` > cp /home/swamimauli/upload/csmith/runtime/del/testcase.c $DIR > cd $DIR > /home/swamimauli/upload/csmith/runtime/del/check.sh > echo $? > > should result in "0" being echoed to the terminal. > > See "creduce --help" for more information. > > Thanks, > Sameeran Joshi
request for legal forms for copyright assignment
TWIMC I am an employee of Intel Corp. who will be making future contributions to gcc, binutils, gdb and glibc. I am writing to request copyright assignment forms, and other legal forms that are deemed necessary by FSF, which will enable me to contribute to gcc, binutils, gdb and glibc. Thanks and best regards, Melanie Blower (p.s. I'm resending this because the first message was sent in html, sorry if you received a duplicate request) BTW I have 2 colleagues in the same position of needing assignment forms from FSF. Do you prefer to hear from them directly or may I pass along the forms to them after I receive from you? Cf: The FSF prefers that a contributor files a copyright assignment for large contributions. See some documentation by the FSF for details and contact us (either via the gcc@gcc.gnu.org list or the GCC maintainer that is taking care of your contributions) to obtain the relevant forms. The most common forms are an assignment for a specific change, an assignment for all future changes, and an employer disclaimer, if an employer or school owns work created by the developer. It's a good idea to send assignme...@gnu.org a copy of your request. I
