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malloc: Fix tst-tcfree3 build csky-linux-gnuabiv2 with fortify source
With gcc 13.1 with --enable-fortify-source=2, tst-tcfree3 fails to build on csky-linux-gnuabiv2 with: ../string/bits/string_fortified.h: In function ‘do_test’: ../string/bits/string_fortified.h:26:8: error: inlining failed in call to ‘always_inline’ ‘memcpy’: target specific option mismatch 26 | __NTH (memcpy (void *__restrict __dest, const void *__restrict __src, | ^~~~~~ ../misc/sys/cdefs.h:81:62: note: in definition of macro ‘__NTH’ 81 | # define __NTH(fct) __attribute__ ((__nothrow__ __LEAF)) fct | ^~~ tst-tcfree3.c:45:3: note: called from here 45 | memcpy (c, a, 32); | ^~~~~~~~~~~~~~~~~ Instead of relying on -O0 to avoid malloc/free to be optimized away, disable the builtin. Reviewed-by: DJ Delorie <dj@redhat.com>
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@ -298,6 +298,8 @@ CPPFLAGS-malloc.c += -DUSE_TCACHE=1
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# Uncomment this for test releases. For public releases it is too expensive.
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#CPPFLAGS-malloc.o += -DMALLOC_DEBUG=1
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CFLAGS-tst-tcfree3.c += -fno-builtin-malloc -fno-builtin-free
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sLIBdir := $(shell echo $(slibdir) | sed 's,lib\(\|64\)$$,\\\\$$LIB,')
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$(objpfx)mtrace: mtrace.pl
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@ -19,9 +19,6 @@
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#include <malloc.h>
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#include <string.h>
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/* Prevent GCC from optimizing away any malloc/free pairs. */
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#pragma GCC optimize ("O0")
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static int
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do_test (void)
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{
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