https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93193
Bug ID: 93193
Summary: C preprocessor works across commented lines
Product: gcc
Version: 9.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: i.s.ger at yandex dot ru
Target Milestone: ---
C preprocessor works across commented lines, so than if C-like multiline
comments are in .F files, the output file in incorrect.
I have tried to compile the following file (gfortran 9.2.1):
program main
! /*
print *, "Hello, World!"
! */
end program main
If -cpp flag is set, the output of `gfortran example.F90 -cpp -E` (compiled
program is incorrect):
# 1 "example.F90"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "example.F90"
program main
!
end program main
If -nocpp flag is set, the output of `gfortran example.F90 -nocpp -E` (compiled
program is correct):
MAIN__ main
Analyzing compilation unit
Performing interprocedural optimizations
<*free_lang_data> <visibility> <build_ssa_passes> <opt_local_passes>
<remove_symbols> <targetclone> <free-fnsummary>Streaming LTO
<whole-program> <fnsummary> <inline> <free-fnsummary> <single-use>
<comdats>Assembling functions:
<materialize-all-clones> <simdclone> MAIN__ main
Time variable usr sys wall
GGC
phase parsing : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 50%)
1684 kB ( 85%)
phase opt and generate : 0.01 (100%) 0.00 ( 0%) 0.01 ( 50%)
111 kB ( 6%)
parser (global) : 0.00 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
1684 kB ( 85%)
varconst : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 50%)
0 kB ( 0%)
initialize rtl : 0.01 (100%) 0.00 ( 0%) 0.00 ( 0%)
12 kB ( 1%)
rest of compilation : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 50%)
4 kB ( 0%)
TOTAL : 0.01 0.00 0.02
1978 kB
I do not know what the compiler wants to say to me in the second case, but I
would have expected to see preprocessored code.
