From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31422 invoked by alias); 22 Sep 2014 06:37:09 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 31365 invoked by uid 48); 22 Sep 2014 06:36:59 -0000 From: "dietmar.schindler@manroland-web.com" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/63326] New: pragma GCC causes wrong code generation Date: Mon, 22 Sep 2014 06:37:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 4.9.1 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: dietmar.schindler@manroland-web.com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2014-09/txt/msg02052.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63326 Bug ID: 63326 Summary: pragma GCC causes wrong code generation Product: gcc Version: 4.9.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: dietmar.schindler@manroland-web.com Created attachment 33530 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33530&action=edit preprocessed file The following command generates wrong code, returning 1 instead of 0 (as if the pragma line ended the statement in which it is placed). raeksrv1:~/bin/so/c> /tmp/usr/local/bin/gcc -v -save-temps bug.c -o bug Using built-in specs. COLLECT_GCC=/tmp/usr/local/bin/gcc COLLECT_LTO_WRAPPER=/tmp/usr/local/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.9.1/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: ../gcc-4.9.1/configure --enable-plugin --disable-libsanitizer : (reconfigured) ../gcc-4.9.1/configure --enable-plugin --enable-languages=c --disable-libsanitizer : (reconfigured) ../gcc-4.9.1/configure --enable-plugin --enable-languages=c --disable-libsanitizer --disable-libcilkrts Thread model: posix gcc version 4.9.1 (GCC) COLLECT_GCC_OPTIONS='-v' '-save-temps' '-o' 'bug' '-mtune=generic' '-march=x86-64' /tmp/usr/local/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.9.1/cc1 -E -quiet -v -iprefix /tmp/usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.9.1/ bug.c -mtune=generic -march=x86-64 -fpch-preprocess -o bug.i ignoring nonexistent directory "/tmp/usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.9.1/../../../../x86_64-unknown-linux-gnu/include" ignoring duplicate directory "/tmp/usr/local/bin/../lib/gcc/../../lib/gcc/x86_64-unknown-linux-gnu/4.9.1/include" ignoring duplicate directory "/tmp/usr/local/bin/../lib/gcc/../../lib/gcc/x86_64-unknown-linux-gnu/4.9.1/include-fixed" ignoring nonexistent directory "/tmp/usr/local/bin/../lib/gcc/../../lib/gcc/x86_64-unknown-linux-gnu/4.9.1/../../../../x86_64-unknown-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /tmp/usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.9.1/include /tmp/usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.9.1/include-fixed /usr/local/include /usr/include End of search list. COLLECT_GCC_OPTIONS='-v' '-save-temps' '-o' 'bug' '-mtune=generic' '-march=x86-64' /tmp/usr/local/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.9.1/cc1 -fpreprocessed bug.i -quiet -dumpbase bug.c -mtune=generic -march=x86-64 -auxbase bug -version -o bug.s GNU C (GCC) version 4.9.1 (x86_64-unknown-linux-gnu) compiled by GNU C version 4.9.1, GMP version 4.3.2, MPFR version 2.4.2, MPC version 0.8.1 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 GNU C (GCC) version 4.9.1 (x86_64-unknown-linux-gnu) compiled by GNU C version 4.9.1, GMP version 4.3.2, MPFR version 2.4.2, MPC version 0.8.1 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: aa505e323dbffe0cb500ba62f983d917 COLLECT_GCC_OPTIONS='-v' '-save-temps' '-o' 'bug' '-mtune=generic' '-march=x86-64' as -v --64 -o bug.o bug.s GNU assembler version 2.20.1 (i486-linux-gnu) using BFD version (GNU Binutils for Debian) 2.20.1-system.20100303 COMPILER_PATH=/tmp/usr/local/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.9.1/:/tmp/usr/local/bin/../libexec/gcc/ LIBRARY_PATH=/tmp/usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.9.1/:/tmp/usr/local/bin/../lib/gcc/:/tmp/usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.9.1/../../../../lib64/:/lib/../lib64/:/usr/lib/../lib64/:/tmp/usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.9.1/../../../:/lib/:/usr/lib/ COLLECT_GCC_OPTIONS='-v' '-save-temps' '-o' 'bug' '-mtune=generic' '-march=x86-64' /tmp/usr/local/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.9.1/collect2 --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o bug /usr/lib/../lib64/crt1.o /usr/lib/../lib64/crti.o /tmp/usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.9.1/crtbegin.o -L/tmp/usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.9.1 -L/tmp/usr/local/bin/../lib/gcc -L/tmp/usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.9.1/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -L/tmp/usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.9.1/../../.. bug.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /tmp/usr/local/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.9.1/crtend.o /usr/lib/../lib64/crtn.o