Hi, I'm not sure if this is a bug in gcc, or in Java, or maybe even a feature, so I'm asking for opinion here before opening a PR...
The attached testcase requires gcc and gfortran, as well as a JDK installation. When running "make" with gcc/gfortran 4.7.2 and Oracle JDK 1.7, a single call to JNI_CreateJavaVM() changes the behaviour of subsequent READ statements in the Fortran code, depending on the value of the LC_ALL environment variable. If this is a bug (it certainly feels like one to me), do you think it is fixable in either gcc or the Java libraries, or is this some unfortunate interaction that cannot really be fixed? If there is something that can be done in gcc, I'll be happy to open a full bug report. Cheers, Martin Output of "make" on my local machine for reference: rm -f *.o testcase *~ gcc -I/opt/java/jdk7/include -I/opt/java/jdk7/include/linux -c testcase_c.c gfortran -c testcase_f.f90 gfortran -o testcase testcase_c.o testcase_f.f90 -L/opt/java/jdk7/jre/lib/amd64/server -ljvm running with LC_ALL=C before JVM creation: result= 2.7260000000000000 after JVM creation: result= 2.7260000000000000 running with LC_ALL=POSIX before JVM creation: result= 2.7260000000000000 after JVM creation: result= 2.7260000000000000 running with LC_ALL=de_DE before JVM creation: result= 2.7260000000000000 after JVM creation: result= 2.0000000000000000
testcase.tgz
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