[Bug c/37917] New: inline functions are lost when defining c99/gnu99 without inline optimizations

[peroyvind at mandriva dot org]

gcc will simply remove functions if they're declared inline without
optimizations.
testinline.c:
inline int testinline()
{
        return 1;
}

int main(int argc, char *argv[])
{
        return testinline();
}

[peroyvind@lappis src]$ gcc -std=gnu99 testinline.c; echo $?
/home/peroyvind/tmp/ccKURkmv.o: In function `main':
testinline.c:(.text+0x15): undefined reference to `testinline'
collect2: ld returned 1 exit status
1
[peroyvind@lappis src]$

Ouchy! test() is simply removed, making main() call a non-existing function..

[peroyvind@lappis src]$ gcc -std=gnu99 -finline testinline.c; echo $?
0
[peroyvind@lappis src]$
Works swell, function gets inlined.

[peroyvind@lappis src]$ gcc -std=gnu99 -fgnu89-inline testinline.c; echo $?
0
[peroyvind@lappis src]$
Same behaviour as when using gnu89, function doesn't get inlined, nor does it
get removed..

With -fgnu89-inline giving the expected behaviour, I feel a bit confused
whether this is actually a bug or intended? I lack insight, but I sure hope
using inline functions without gcc optimizations resulting in breakage isn't
intended.


-- 
           Summary: inline functions are lost when defining c99/gnu99
                    without inline optimizations
           Product: gcc
           Version: 4.3.2
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: peroyvind at mandriva dot org
 GCC build triplet: x86_64-manbo-linux-gnu
  GCC host triplet: x86_64-manbo-linux-gnu
GCC target triplet: x86_64-manbo-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37917