https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66058
Bug ID: 66058
Summary: Backslash in comment kills compile
Product: gcc
Version: 5.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: matthew.thompson at nasa dot gov
Target Milestone: ---
Created attachment 35489
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35489&action=edit
Reproducer of compiler bug
I've discovered what I think is a bug in gfortran-5.1.0 but I'm not sure. To
wit, given the code attached, if you compile it:
**********
(430) $ gfortran -c -v -save-temps TRAMP_coag.F
Using built-in specs.
COLLECT_GCC=gfortran
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-5.1.0/configure --prefix=/ford1/local/gcc/gcc-5.1.0
Thread model: posix
gcc version 5.1.0 (GCC)
COLLECT_GCC_OPTIONS='-c' '-v' '-save-temps' '-mtune=generic' '-march=x86-64'
/ford1/local/gcc/gcc-5.1.0/libexec/gcc/x86_64-unknown-linux-gnu/5.1.0/f951
TRAMP_coag.F -ffixed-form -cpp=TRAMP_coag.f90 -quiet -v TRAMP_coag.F -quiet
-dumpbase TRAMP_coag.F -mtune=generic -march=x86-64 -auxbase TRAMP_coag
-version -fintrinsic-modules-path
/ford1/local/gcc/gcc-5.1.0/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/finclude -o
TRAMP_coag.s
GNU Fortran (GCC) version 5.1.0 (x86_64-unknown-linux-gnu)
compiled by GNU C version 5.1.0, 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
ignoring nonexistent directory
"/ford1/local/gcc/gcc-5.1.0/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/ford1/local/gcc/gcc-5.1.0/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/finclude
/ford1/local/gcc/gcc-5.1.0/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/include
/usr/local/include
/ford1/local/gcc/gcc-5.1.0/include
/ford1/local/gcc/gcc-5.1.0/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/include-fixed
/usr/include
End of search list.
GNU Fortran2008 (GCC) version 5.1.0 (x86_64-unknown-linux-gnu)
compiled by GNU C version 5.1.0, 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
TRAMP_coag.F:27:31:
IF( PUSE .GT. KIJ_PRES2 ) THEN
1
Error: Symbol ‘kij_pres2’ at (1) has no IMPLICIT type
TRAMP_coag.F:23:31:
IF( TUSE .GT. KIJ_TEMP2 ) THEN
1
Error: Symbol ‘kij_temp2’ at (1) has no IMPLICIT type
**********
Now, if you open that code and remove the backslashes at the end of lines 5 and
7, you get:
**********
(431) $ gfortran -c -v -save-temps TRAMP_coag.works.F
Using built-in specs.
COLLECT_GCC=gfortran
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-5.1.0/configure --prefix=/ford1/local/gcc/gcc-5.1.0
Thread model: posix
gcc version 5.1.0 (GCC)
COLLECT_GCC_OPTIONS='-c' '-v' '-save-temps' '-mtune=generic' '-march=x86-64'
/ford1/local/gcc/gcc-5.1.0/libexec/gcc/x86_64-unknown-linux-gnu/5.1.0/f951
TRAMP_coag.works.F -ffixed-form -cpp=TRAMP_coag.works.f90 -quiet -v
TRAMP_coag.works.F -quiet -dumpbase TRAMP_coag.works.F -mtune=generic
-march=x86-64 -auxbase TRAMP_coag.works -version -fintrinsic-modules-path
/ford1/local/gcc/gcc-5.1.0/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/finclude -o
TRAMP_coag.works.s
GNU Fortran (GCC) version 5.1.0 (x86_64-unknown-linux-gnu)
compiled by GNU C version 5.1.0, 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
ignoring nonexistent directory
"/ford1/local/gcc/gcc-5.1.0/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/ford1/local/gcc/gcc-5.1.0/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/finclude
/ford1/local/gcc/gcc-5.1.0/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/include
/usr/local/include
/ford1/local/gcc/gcc-5.1.0/include
/ford1/local/gcc/gcc-5.1.0/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/include-fixed
/usr/include
End of search list.
GNU Fortran2008 (GCC) version 5.1.0 (x86_64-unknown-linux-gnu)
compiled by GNU C version 5.1.0, 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
COLLECT_GCC_OPTIONS='-c' '-v' '-save-temps' '-mtune=generic' '-march=x86-64'
as -v --64 -o TRAMP_coag.works.o TRAMP_coag.works.s
GNU assembler version 2.20.51.0.2 (x86_64-redhat-linux) using BFD version
version 2.20.51.0.2-5.42.el6 20100205
COMPILER_PATH=/ford1/local/gcc/gcc-5.1.0/libexec/gcc/x86_64-unknown-linux-gnu/5.1.0/:/ford1/local/gcc/gcc-5.1.0/libexec/gcc/x86_64-unknown-linux-gnu/5.1.0/:/ford1/local/gcc/gcc-5.1.0/libexec/gcc/x86_64-unknown-linux-gnu/:/ford1/local/gcc/gcc-5.1.0/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/:/ford1/local/gcc/gcc-5.1.0/lib/gcc/x86_64-unknown-linux-gnu/
LIBRARY_PATH=/ford1/local/gcc/gcc-5.1.0/lib64/../lib64/:/ford1/local/gcc/gcc-5.1.0/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/:/ford1/local/gcc/gcc-5.1.0/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../../../lib64/:/lib/../lib64/:/usr/lib/../lib64/:/ford1/local/gcc/gcc-5.1.0/lib64/:/ford1/local/gcc/gcc-5.1.0/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-c' '-v' '-save-temps' '-mtune=generic' '-march=x86-64'
**********
I will note that PGI and Intel Fortran compile this just fine.
