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-rw-r--r--malloc/Makefile14
1 files changed, 14 insertions, 0 deletions
diff --git a/malloc/Makefile b/malloc/Makefile
index fa1730ecb7..91eb17dd7a 100644
--- a/malloc/Makefile
+++ b/malloc/Makefile
@@ -115,6 +115,20 @@ endif
include ../Rules
+# Support references to removed APIs. We use #pragma GCC poison in
+# <stdc-predef.h> to make it difficult to reference them. For select
+# source files, we work around this poisoning by defining a macro on
+# the command line (which is processed before <stdc-predef.h> and can
+# therefore use tokens poisoned later).
+poisoned_apis = \
+ __malloc_initialize_hook \
+
+unpoisoned_api_defines := \
+ $(foreach sym,$(poisoned_apis), \
+ $(patsubst %,-Dold%, $(sym))=$(sym))
+CPPFLAGS-malloc.c = $(unpoisoned_api_defines)
+CPPFLAGS-mcheck-init.c = $(unpoisoned_api_defines)
+
CFLAGS-mcheck-init.c = $(PIC-ccflag)
CFLAGS-obstack.c = $(uses-callbacks)