[glibc/azanella/clang] malloc: Disable malloc builtins on tests

[Adhemerval Zanella]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=34e5a871994780c0696bfd99fb63e42f56f9a66e

commit 34e5a871994780c0696bfd99fb63e42f56f9a66e
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Wed Mar 30 15:42:18 2022 -0300

    malloc: Disable malloc builtins on tests
    
    To avoid compiler optimize away memory allocation calls, which might
    interfere when both valid and invalid calls checks.

Diff:
---
 malloc/Makefile | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/malloc/Makefile b/malloc/Makefile
index c83ade5f10..5363b884f5 100644
--- a/malloc/Makefile
+++ b/malloc/Makefile
@@ -370,3 +370,18 @@ tst-mallocstate-malloc-check-ENV = LD_PRELOAD=$(objpfx)libc_malloc_debug.so
 # libc_malloc_debug.so.
 $(objpfx)tst-mallocstate: $(objpfx)libc_malloc_debug.so
 $(objpfx)tst-mallocstate-malloc-check: $(objpfx)libc_malloc_debug.so
+
+CFLAGS-tst-memalign.c += -fno-builtin
+CFLAGS-tst-memalign-2.c += -fno-builtin
+CFLAGS-tst-memalign-3.c += -fno-builtin
+CFLAGS-tst-malloc.c += -fno-builtin
+CFLAGS-tst-malloc-backtrace.c += -fno-builtin
+CFLAGS-tst-malloc-check.c += -fno-builtin
+CFLAGS-tst-malloc-too-large.c += -fno-builtin
+CFLAGS-tst-realloc.c += -fno-builtin
+CFLAGS-tst-valloc.c += -fno-builtin
+CFLAGS-tst-compathooks-off.c += -fno-builtin
+CFLAGS-tst-compathooks-on.c += -fno-builtin
+CFLAGS-tst-mallinfo2.c += -fno-builtin
+CFLAGS-tst-aligned-alloc.c += -fno-builtin
+CFLAGS-tst-aligned-alloc-static.c += -fno-builtin