gcc 3.0 removes function calls

[Raymond Toy]

Consider the code in the attached file, bug.c.

gcc -v says

Reading specs from 
/apps/gnu/solaris2.7/gcc-3.0/lib/gcc-lib/sparc-sun-solaris2.7/3.0/specs
Configured with: ./configure --prefix=/apps/gnu/solaris2.7/gcc-3.0 
--enable-shared --enable-version-specific-runtime-libs : (reconfigured) 
./configure --prefix=/apps/gnu/solaris2.7/gcc-3.0 --enable-shared 
--enable-version-specific-runtime-libs --enable-lang=c++,f77,java
Thread model: posix
gcc version 3.0

Compile this file with "gcc -O -c bug.c".  Then use nm to look at the
contents of the object file.  You'll see that only a handful of the
functions are actually in the object file.  Most of them have been
deleted.

This looks like a bug to me.  Even "gcc -O0 -g" does this.

Ray

P.S.  This file is from CMUCL which uses this technique to make sure
all C functions that CMUCL uses is defined.

bug.c
Description: Text document