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This seems to be an optimization bug in g77/gcc With Optimization <= O1 (only on file escape.f) the program gives different results from optimizing O2 with O2 but uncommenting the line 72 (which just prints the variable q) starting cxxxxx results are correct again, even with O2 !!! Is this a know register problem? I add the tar with makefile PS. same problems with 2.95.3 on another machine. =================================== local configuration ==================================== Pentium III (Katmai) g77 -v g77 version 2.95.2 19991024 (release) (from FSF-g77 version 0.5.25 19991024 (release)) Driving: g77 -ffixed-line-length-none -v -lg2c -lm Reading specs from /usr/local/gcc-2.95.2/lib/gcc-lib/i686-pc-linux-gnu/2.95.2/specs gcc version 2.95.2 19991024 (release) /usr/local/gcc-2.95.2/lib/gcc-lib/i686-pc-linux-gnu/2.95.2/collect2 -m elf_i386 -dynamic-linker /lib/ld-linux.so.2 /usr/lib/crt1.o /usr/lib/crti.o /usr/local/gcc-2.95.2/lib/gcc-lib/i686-pc-linux-gnu/2.95.2/crtbegin.o -L/usr/local/gcc-2.95.2/lib/gcc-lib/i686-pc-linux-gnu/2.95.2 -L/usr/local/gcc-2.95.2/lib -lg2c -lm -lgcc -lc -lgcc /usr/local/gcc-2.95.2/lib/gcc-lib/i686-pc-linux-gnu/2.95.2/crtend.o /usr/lib/crtn.o /usr/local/gcc-2.95.2/lib/gcc-lib/i686-pc-linux-gnu/2.95.2/libg2c.a(main.o): In function `main': /home/eckmann/export/gcc/objdir/i686-pc-linux-gnu/libf2c/libF77/../../../../gcc-2.95.2/libf2c/libF77/main.c:61: undefined reference to `MAIN__' collect2: ld returned 1 exit status __________________________________ Prof. Jean-Pierre Eckmann, Departement de Physique Theorique and Section de Mathematiques 32, Bld D'Yvoy, Universite de Geneve 1211 Geneva 4 Switzerland Phone (41)(22)7026360 Fax (41)(22)7026870 http://theory.physics.unige.ch/~eckmann
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