gcc4: extern inline vs. c99

[Yaakov (Cygwin/X)]

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Dave,

gcc-4 -std=c99 appears to be treating extern inline functions as if they
were marked dllexport, leading to all sorts of linking problems.  STC:

$ cat > test-ntohs1.c <<EOF
#include <netinet/in.h>

extern void foo (uint32_t);

int main(void) {
    uint32_t a = 10;
    htonl(a);
    foo(a);
    return 0;
}
EOF

$ cat > test-ntohs2.c <<EOF
#include <netinet/in.h>

void foo(uint32_t i) {
        htonl(i);
}
EOF

$ gcc-4 -o test-ntohs.exe test-ntohs1.c test-ntohs2.c

$ gcc-4 -std=c99 -o test-ntohs.exe test-ntohs1.c test-ntohs2.c
/var/tmp/ccUwNnD4.o:test-ntohs2.c:(.text+0x0): multiple definition of
`___ntohl'
/var/tmp/ccise4Pi.o:test-ntohs1.c:(.text+0x0): first defined here
/var/tmp/ccUwNnD4.o:test-ntohs2.c:(.text+0x15): multiple definition of
`___ntohs'
/var/tmp/ccise4Pi.o:test-ntohs1.c:(.text+0x15): first defined here
collect2: ld returned 1 exit status


Yaakov
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