diff --git a/ghostscript-noopt.patch b/ghostscript-noopt.patch
new file mode 100644
index 0000000..3a93580
--- /dev/null
+++ b/ghostscript-noopt.patch
@@ -0,0 +1,11 @@
+--- ghostscript-7.07/src/int.mak.noopt	2005-03-10 17:22:53.000000000 +0000
++++ ghostscript-7.07/src/int.mak	2005-03-10 17:24:10.000000000 +0000
+@@ -105,7 +105,7 @@
+ $(PSOBJ)igcref.$(OBJ) : $(PSSRC)igcref.c $(GH) $(memory__h)\
+  $(gsexit_h) $(gsstruct_h)\
+  $(iastate_h) $(idebug_h) $(igc_h) $(iname_h) $(ipacked_h) $(store_h)
+-	$(PSCC) $(PSO_)igcref.$(OBJ) $(C_) $(PSSRC)igcref.c
++	$(PSCC) -O0 $(PSO_)igcref.$(OBJ) $(C_) $(PSSRC)igcref.c
+ 
+ $(PSOBJ)igcstr.$(OBJ) : $(PSSRC)igcstr.c $(GH) $(memory__h)\
+  $(gsmdebug_h) $(gsstruct_h) $(iastate_h) $(igcstr_h)
diff --git a/ghostscript.spec b/ghostscript.spec
index 1ee26b8..83086d6 100644
--- a/ghostscript.spec
+++ b/ghostscript.spec
@@ -18,6 +18,7 @@ Patch3: ghostscript-scripts.patch
 Patch4: ghostscript-ps2epsi.patch
 Patch5: ghostscript-badc.patch
 Patch6: ghostscript-pagesize.patch
+Patch7: ghostscript-noopt.patch
 
 Requires: zlib, libpng, glib2
 Requires: urw-fonts >= 1.1, ghostscript-fonts
@@ -85,6 +86,9 @@ A GTK-enabled version of Ghostscript, called 'gsx'.
 # Prevent pdf2ps generating "null setpagesize" (bug #126446).
 %patch6 -p1 -b .pagesize
 
+# Build igcref.c with -O0 to work around bug #150771.
+%patch7 -p1 -b .noopt
+
 # Convert manual pages to UTF-8
 from8859_1() {
 	iconv -f iso-8859-1 -t utf-8 < "$1" > "${1}_"
@@ -213,6 +217,7 @@ rm -rf $RPM_BUILD_ROOT
 
 %changelog
 * Mon Jun  6 2005 Tim Waugh <twaugh@redhat.com>
+- Build igcref.c with -O0 to work around bug #150771.
 - Renumber patches.
 
 * Fri Jun  3 2005 Tim Waugh <twaugh@redhat.com> 8.15-0.rc3.1