In the following code, __gfortran_os_error is thrown as unresolved at link
time. The trouble goes away if
//'=0'
is removed.
$ cat silly.f
character(16) :: str,namx
len=4
namx='abcdefg'
str=' '
str(7:)=namx(1:len)//'=0'
write (6,*) str
end
$ gfortran silly.f
/usr/bin/ld: Undefined symbols:
__gfortran_os_error
collect2: ld returned 1 exit status
$ gfortran -v
Using built-in specs.
Target: i386-apple-darwin8.9.1
Configured with: ../gcc-4.3-20070518/configure --enable-languages=fortran
--enable-static --disable-shared
Thread model: posix
gcc version 4.3.0 20070518 (experimental)
$ uname -a
Darwin Peter-Knowles-MacBook.local 8.9.1 Darwin Kernel Version 8.9.1: Thu Feb
22 20:55:00 PST 2007; root:xnu-792.18.15~1/RELEASE_I386 i386 i386
--
Summary: Unresolved external __gfortran_os_error in program that
manipulates strings
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: KnowlesPJ at Cardiff dot ac dot uk
GCC build triplet: i386-apple-darwin8.9.1
GCC host triplet: i386-apple-darwin8.9.1
GCC target triplet: i386-apple-darwin8.9.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32155
