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From: "aap1 at psu dot edu" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/54522] New: Using "g77 -O -fno-automatic", reassignment of a variable in an if statement in a function triggers a compiler bug. Date: Fri, 07 Sep 2012 21:30:00 -0000 [thread overview] Message-ID: <bug-54522-4@http.gcc.gnu.org/bugzilla/> (raw) http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54522 Bug #: 54522 Summary: Using "g77 -O -fno-automatic", reassignment of a variable in an if statement in a function triggers a compiler bug. Classification: Unclassified Product: gcc Version: 3.4.6 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned@gcc.gnu.org ReportedBy: aap1@psu.edu C g77 bug found 9/7/2012. C When command "g77 -c -O -fno-automatic reasssignment_bug.for" is C used on the included code, the following is produced: C C reassignment_bug.for: In function `dum': C In file included from reassignment_bug.for:0: C reassignment_bug.for:7: internal compiler error: in gen_reg_rtx, at C emit-rtl.c:819 C Please submit a full bug report, C with preprocessed source if appropriate. C See <URL:http://bugzilla.redhat.com/bugzilla> for instructions. C C The code is non-sensical but valid and should not crash the compiler. C The logic was found in a larger more complex piece of code where the C cause was hard to find. C C Compiler version from "g77 -v": C Reading specs from /usr/lib/gcc/x86_64-redhat-linux/3.4.6/specs C Configured with: ../configure --prefix=/usr --mandir=/usr/share/man C --infodir=/usr/share/info --enable-shared --enable-threads=posix C --disable-checking --with-system-zlib --enable-__cxa_atexit C --disable-libunwind-exceptions --enable-languages=c,c++,f77 C --disable-libgcj --host=x86_64-redhat-linux C Thread model: posix C gcc version 3.4.6 20060404 (Red Hat 3.4.6-19.el6) C FUNCTION DUM(A) B=A IF (B.EQ.1) B=A DUM=B RETURN END
next reply other threads:[~2012-09-07 21:30 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-09-07 21:30 aap1 at psu dot edu [this message] 2012-09-07 21:40 ` [Bug fortran/54522] " pinskia at gcc dot gnu.org 2012-09-09 14:48 ` janus at gcc dot gnu.org 2012-09-09 15:27 ` dominiq at lps dot ens.fr 2012-09-10 10:30 ` rguenth at gcc dot gnu.org
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