https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78942
Bug ID: 78942
Summary: Incorrect error message for preprocessed source
Product: gcc
Version: 6.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: baradi09 at gmail dot com
Target Milestone: ---
The line number and the code shown in error messages are inconsistent, when
instead of preprocessing a file on the fly (option -cpp) the file is
preprocessed first (-cpp -E) and then compiled with gfortran.
echo 'program F,AIL' > test.F90; gfortran -cpp test.F90
yields the CORRECT error message:
test.F90:1:7:
program F,AIL
1
Error: Invalid form of PROGRAM statement at (1)
While
echo 'program F,AIL' > test.F90; gfortran -cpp -E test.F90 > test.f90; gfortran
test.f90
gives the WRONG error message:
test.f90:1:7:
# 1 "test.F90"
1
Error: Invalid form of PROGRAM statement at (1)
The preprocessed file (test.f90) looks as:
# 1 "test.F90"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "test.F90"
program F,AIL
which seems to be correct, though.
Actually, the issue can be cured by changing the first line marker to indicate
an include file, as running gfortran on the modified preprocessed source below
gives the correct error message again:
# 1 "test.F90" 1
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "test.F90"
program F,AIL
Probably the error was introduced in gfortran 5, as the error messages are
consistent in 4.9, but not in 5.1 any more.
This bug may be also related to bug 78792.
