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authorFrédéric Bérat <fberat@redhat.com>2023-03-17 10:17:28 +0100
committerFrédéric Bérat <fberat@redhat.com>2023-07-05 16:59:48 +0200
commit20c894d21eb64153abf7c7f96e6a151897cf1488 (patch)
tree41038a7e2daf61f19d10f4804313e8e33430046b /setjmp
parent64d9580cdf7e417170abbef0327e04b29712e949 (diff)
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Exclude routines from fortification
Since the _FORTIFY_SOURCE feature uses some routines of Glibc, they need to
be excluded from the fortification.

On top of that:
 - some tests explicitly verify that some level of fortification works
   appropriately, we therefore shouldn't modify the level set for them.
 - some objects need to be build with optimization disabled, which
   prevents _FORTIFY_SOURCE to be used for them.

Assembler files that implement architecture specific versions of the
fortified routines were not excluded from _FORTIFY_SOURCE as there is no
C header included that would impact their behavior.

Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Diffstat (limited to 'setjmp')
-rw-r--r--setjmp/Makefile9
1 files changed, 9 insertions, 0 deletions
diff --git a/setjmp/Makefile b/setjmp/Makefile
index e5733a8c52..363fb6673c 100644
--- a/setjmp/Makefile
+++ b/setjmp/Makefile
@@ -38,4 +38,13 @@ gen-as-const-headers += jmp_buf-macros.sym
 
 include ../Rules
 
+# This test messes the stack on purpose, which triggers longjump fortify
+# failure
+CFLAGS-bug269-setjmp.c += $(no-fortify-source)
+
+# Exclude fortified routines from being built with _FORTIFY_SOURCE
+routines_no_fortify += \
+  longjmp \
+  # routines_no_fortify
+
 $(objpfx)tst-setjmp-fp: $(libm)