Fixing up warnings caused by higher levels of optimisation.

Copied from Perforce
 Change: 179178
 ServerID: perforce.ravenbrook.com

4 files changed, 6 insertions, 12 deletions

diff --git a/mps/code/comm.gmk b/mps/code/comm.gmk
index 98f19aa0958..5e606fc09b9 100644
--- a/mps/code/comm.gmk
+++ b/mps/code/comm.gmk
@@ -202,7 +202,7 @@ all: mpmss sacss amcss amcsshe amsss amssshe segsmss awlut awluthe \
      mpsicv lockcov poolncv locv qs apss \
      finalcv finaltest arenacv bttest teletest \
      abqtest cbstest btcv mv2test messtest steptest \
-     walkt0 libcbt zcoll zmess \
+     walkt0 zcoll zmess \
      eventcnv \
      mps.a mpsplan.a
 
@@ -227,7 +227,6 @@ mpmss sacss amcss amcssth amcsshe amsss amssshe segsmss awlut awlutth \
   awluthe mpsicv lockcov poolncv locv qs apss \
   finalcv finaltest arenacv bttest teletest \
   expt825 \
-  libcbt \
   abqtest cbstest btcv mv2test \
   messtest steptest \
   walkt0 \
@@ -291,11 +290,6 @@ $(PFM)/$(VARIETY)/finaltest: $(PFM)/$(VARIETY)/finaltest.o \
 $(PFM)/$(VARIETY)/expt825: $(PFM)/$(VARIETY)/expt825.o \
         $(FMTDYTSTOBJ) $(MPMOBJ) $(PLINTHOBJ) $(AMCOBJ) $(TESTLIBOBJ)
 
-$(PFM)/$(VARIETY)/libcbt: $(PFM)/$(VARIETY)/libcbt.o \
-        $(PFM)/$(VARIETY)/mpslibcb.o \
-        $(PFM)/$(VARIETY)/mpsioan.o \
-        $(MPMOBJ) $(TESTLIBOBJ)
-
 $(PFM)/$(VARIETY)/locv: $(PFM)/$(VARIETY)/locv.o \
         $(MPMOBJ) $(PLINTHOBJ) $(LOOBJ) $(TESTLIBOBJ)
 
diff --git a/mps/code/dbgpool.c b/mps/code/dbgpool.c
index 765372fae64..c7978249596 100644
--- a/mps/code/dbgpool.c
+++ b/mps/code/dbgpool.c
@@ -472,7 +472,7 @@ static Res DebugPoolAlloc(Addr *aReturn,
                           Pool pool, Size size, Bool withReservoir)
 {
   Res res;
-  Addr new;
+  Addr new = NULL; /* suppress "may be used uninitialized" warning */
   PoolDebugMixin debug;
 
   AVER(aReturn != NULL);
diff --git a/mps/code/fri3gc.gmk b/mps/code/fri3gc.gmk
index 32f4496de6e..17ce26833a0 100644
--- a/mps/code/fri3gc.gmk
+++ b/mps/code/fri3gc.gmk
@@ -15,9 +15,9 @@ LIBS = -lm -pthread
 
 include gc.gmk
 
-CFLAGSCOMPILER := $(subst -pedantic,,$(CFLAGSCOMPILER))
-CFLAGSDEBUG = -g3
-CFLAGSOPT = -O -g3
+# FIXME: We pun types through the MPS interface, setting off this warning.
+# Can we avoid this?  The puns might indeed be dangerous.
+CFLAGSCOMPILER := $(CFLAGSCOMPILER) -Wno-strict-aliasing
 
 CC = cc
 
diff --git a/mps/code/poolams.c b/mps/code/poolams.c
index 4fbaba79b7d..f1ae7478bc3 100644
--- a/mps/code/poolams.c
+++ b/mps/code/poolams.c
@@ -885,7 +885,7 @@ static Res AMSBufferFill(Addr *baseReturn, Addr *limitReturn,
   AMS ams;
   Seg seg;
   Ring node, ring, nextNode;    /* for iterating over the segments */
-  Index base, limit;
+  Index base = 0, limit = 0;    /* suppress "may be used uninitialized" */
   Addr baseAddr, limitAddr;
   RankSet rankSet;
   Bool b;                       /* the return value of amsSegAlloc */