[pypy-issue] Issue #3084: RevDB build fails (pypy/pypy)

[Stefano Rivera]

New issue 3084: RevDB build fails
https://bitbucket.org/pypy/pypy/issues/3084/revdb-build-fails

Stefano Rivera:

PyPy 2.7 7.2.0rc0 fails to build RevDB with this:

```
gcc -O3 -pthread -fomit-frame-pointer -Wall -Wno-unused -Wno-address -fdebug-prefix-map=/<<BUILDDIR>>/pypy-7.2.0~rc0+dfsg=. -Wformat -Werror=format-security -DPYPY_USING_BOEHM_GC -DPYPY_BOEHM_WITH_HEADER -DPy_BUILD_CORE -DPy_BUILD_CORE -DPy_BUILD_CORE -DPy_BUILD_CORE -o pypy_module_time.o -c pypy_module_time.c -I"/<<BUILDDIR>>/pypy-7.2.0~rc0+dfsg/rpython"/translator/c -I"/<<BUILDDIR>>/pypy-7.2.0~rc0+dfsg/rpython"/translator/revdb -I"/<<BUILDDIR>>/pypy-7.2.0~rc0+dfsg/rpython"/../pypy/module/cpyext/include -I"/<<BUILDDIR>>/pypy-7.2.0~rc0+dfsg/rpython"/../pypy/module/cpyext/parse -I"/<<BUILDDIR>>/pypy-7.2.0~rc0+dfsg/rpython"/../build-tmp/usession-debian-0 -I"/<<BUILDDIR>>/pypy-7.2.0~rc0+dfsg/rpython"/../pypy/module/_cffi_backend/src -I"/<<BUILDDIR>>/pypy-7.2.0~rc0+dfsg/rpython"/rlib/rjitlog/src -I"/<<BUILDDIR>>/pypy-7.2.0~rc0+dfsg/rpython"/../pypy/module/_multibytecodec -I"/<<BUILDDIR>>/pypy-7.2.0~rc0+dfsg/rpython"/../pypy/module/operator
pypy_module_sys.c: In function 'pypy_g_setrecursionlimit':
pypy_module_sys.c:956:2: warning: implicit declaration of function 'OP_GC_INCREASE_ROOT_STACK_
DEPTH' [-Wimplicit-function-declaration]
  956 |  OP_GC_INCREASE_ROOT_STACK_DEPTH(l_v414508, /* nothing */);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
pypy_module_sys.c:956:58: error: expected expression before ')' token
  956 |  OP_GC_INCREASE_ROOT_STACK_DEPTH(l_v414508, /* nothing */);
      |                                                          ^
```

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