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From: Siddhesh Poyarekar <siddhesh@sourceware.org>
To: libc-stable@sourceware.org
Cc: carlos@redhat.com, fweimer@redhat.com,
	Adhemerval Zanella <adhemerval.zanella@linaro.org>
Subject: [committed 2.34 7/8] debug: Autogenerate _FORTIFY_SOURCE tests
Date: Fri, 11 Mar 2022 20:42:02 +0530	[thread overview]
Message-ID: <20220311151203.3585163-8-siddhesh@sourceware.org> (raw)
In-Reply-To: <20220311151203.3585163-1-siddhesh@sourceware.org>

Rename debug/tst-chk1.c to debug/tst-fortify.c and add make hackery to
autogenerate tests with different macros enabled to build and run the
same test with different configurations as well as different
fortification levels.

The change also ends up expanding the -lfs tests to include
_FORTIFY_SOURCE=3.

Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
(cherry picked from commit db27f1251b008280a29d540b4f8ab2a38a0d80af)
---
 Makerules                           |   6 ++
 debug/Makefile                      | 111 +++++++++++++++++-----------
 debug/tst-chk2.c                    |   2 -
 debug/tst-chk3.c                    |   2 -
 debug/tst-chk4.cc                   |   1 -
 debug/tst-chk5.cc                   |   2 -
 debug/tst-chk6.cc                   |   2 -
 debug/tst-chk7.c                    |   2 -
 debug/tst-chk8.cc                   |   2 -
 debug/{tst-chk1.c => tst-fortify.c} |   0
 debug/tst-lfschk1.c                 |   2 -
 debug/tst-lfschk2.c                 |   2 -
 debug/tst-lfschk3.c                 |   2 -
 debug/tst-lfschk4.cc                |   2 -
 debug/tst-lfschk5.cc                |   2 -
 debug/tst-lfschk6.cc                |   2 -
 16 files changed, 74 insertions(+), 68 deletions(-)
 delete mode 100644 debug/tst-chk2.c
 delete mode 100644 debug/tst-chk3.c
 delete mode 100644 debug/tst-chk4.cc
 delete mode 100644 debug/tst-chk5.cc
 delete mode 100644 debug/tst-chk6.cc
 delete mode 100644 debug/tst-chk7.c
 delete mode 100644 debug/tst-chk8.cc
 rename debug/{tst-chk1.c => tst-fortify.c} (100%)
 delete mode 100644 debug/tst-lfschk1.c
 delete mode 100644 debug/tst-lfschk2.c
 delete mode 100644 debug/tst-lfschk3.c
 delete mode 100644 debug/tst-lfschk4.cc
 delete mode 100644 debug/tst-lfschk5.cc
 delete mode 100644 debug/tst-lfschk6.cc

diff --git a/Makerules b/Makerules
index 596fa68376..7fbe85719a 100644
--- a/Makerules
+++ b/Makerules
@@ -424,6 +424,12 @@ $(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
 endef
 object-suffixes-left := $(all-object-suffixes)
 include $(o-iterator)
+
+define o-iterator-doit
+$(objpfx)%$o: $(objpfx)%.cc $(before-compile); $$(compile-command.cc)
+endef
+object-suffixes-left := $(all-object-suffixes)
+include $(o-iterator)
 endif
 
 # Generate .dT files as we compile.
diff --git a/debug/Makefile b/debug/Makefile
index bc37e466ee..acc1b8f6ad 100644
--- a/debug/Makefile
+++ b/debug/Makefile
@@ -1,4 +1,5 @@
-# Copyright (C) 1998-2021 Free Software Foundation, Inc.
+# Copyright (C) 1998-2022 Free Software Foundation, Inc.
+# Copyright The GNU Toolchain Authors.
 # This file is part of the GNU C Library.
 
 # The GNU C Library is free software; you can redistribute it and/or
@@ -110,32 +111,60 @@ CFLAGS-tst-longjmp_chk3.c += -fexceptions -fasynchronous-unwind-tables
 CPPFLAGS-tst-longjmp_chk3.c += -D_FORTIFY_SOURCE=1
 CPPFLAGS-tst-realpath-chk.c += -D_FORTIFY_SOURCE=2
 
+# _FORTIFY_SOURCE tests.
+# Auto-generate tests for _FORTIFY_SOURCE for different levels, compilers and
+# preprocessor conditions based on tst-fortify.c.
+#
+# To add a new test condition, define a cflags-$(cond) make variable to set
+# CFLAGS for the file.
+
+tests-all-chk = tst-fortify
+tests-c-chk =
+tests-cc-chk =
+
+CFLAGS-tst-fortify.c += -Wno-format -Wno-deprecated-declarations -Wno-error
+
+# No additional flags for the default tests.
+define cflags-default
+endef
+
+define cflags-lfs
+CFLAGS-tst-fortify-$(1)-lfs-$(2).$(1) += -D_FILE_OFFSET_BITS=64
+endef
+
 # We know these tests have problems with format strings, this is what
 # we are testing.  Disable that warning.  They are also testing
 # deprecated functions (notably gets) so disable that warning as well.
 # And they also generate warnings from warning attributes, which
 # cannot be disabled via pragmas, so require -Wno-error to be used.
-CFLAGS-tst-chk1.c += -Wno-format -Wno-deprecated-declarations -Wno-error
-CFLAGS-tst-chk2.c += -Wno-format -Wno-deprecated-declarations -Wno-error
-CFLAGS-tst-chk3.c += -Wno-format -Wno-deprecated-declarations -Wno-error
-CFLAGS-tst-chk4.cc += -Wno-format -Wno-deprecated-declarations -Wno-error
-CFLAGS-tst-chk5.cc += -Wno-format -Wno-deprecated-declarations -Wno-error
-CFLAGS-tst-chk6.cc += -Wno-format -Wno-deprecated-declarations -Wno-error
-CFLAGS-tst-chk7.c += -Wno-format -Wno-deprecated-declarations -Wno-error
-CFLAGS-tst-chk8.cc += -Wno-format -Wno-deprecated-declarations -Wno-error
-CFLAGS-tst-lfschk1.c += -Wno-format -Wno-deprecated-declarations -Wno-error
-CFLAGS-tst-lfschk2.c += -Wno-format -Wno-deprecated-declarations -Wno-error
-CFLAGS-tst-lfschk3.c += -Wno-format -Wno-deprecated-declarations -Wno-error
-CFLAGS-tst-lfschk4.cc += -Wno-format -Wno-deprecated-declarations -Wno-error
-CFLAGS-tst-lfschk5.cc += -Wno-format -Wno-deprecated-declarations -Wno-error
-CFLAGS-tst-lfschk6.cc += -Wno-format -Wno-deprecated-declarations -Wno-error
-LDLIBS-tst-chk4 = -lstdc++
-LDLIBS-tst-chk5 = -lstdc++
-LDLIBS-tst-chk6 = -lstdc++
-LDLIBS-tst-chk8 = -lstdc++
-LDLIBS-tst-lfschk4 = -lstdc++
-LDLIBS-tst-lfschk5 = -lstdc++
-LDLIBS-tst-lfschk6 = -lstdc++
+define gen-chk-test
+tests-$(1)-chk += tst-fortify-$(1)-$(2)-$(3)
+CFLAGS-tst-fortify-$(1)-$(2)-$(3).$(1) += -D_FORTIFY_SOURCE=$(3) -Wno-format \
+					  -Wno-deprecated-declarations \
+					  -Wno-error
+$(eval $(call cflags-$(2),$(1),$(3)))
+$(objpfx)tst-fortify-$(1)-$(2)-$(3).$(1): tst-fortify.c Makefile
+	( echo "/* Autogenerated from Makefile.  */"; \
+	  echo ""; \
+	  echo "#include \"tst-fortify.c\"" ) > $$@.tmp
+	mv $$@.tmp $$@
+endef
+
+chk-extensions = c cc
+chk-types = default lfs
+chk-levels = 1 2 3
+
+$(foreach e,$(chk-extensions), \
+  $(foreach t,$(chk-types), \
+    $(foreach l,$(chk-levels), \
+      $(eval $(call gen-chk-test,$(e),$(t),$(l))))))
+
+tests-all-chk += $(tests-c-chk) $(tests-cc-chk)
+
+define link-cc
+LDLIBS-$(1) = -lstdc++
+endef
+$(foreach t,$(tests-cc-chk), $(eval $(call link-cc,$(t))))
 
 # backtrace_symbols only works if we link with -rdynamic.  backtrace
 # requires unwind tables on most architectures.
@@ -152,19 +181,25 @@ LDFLAGS-tst-backtrace6 = -rdynamic
 
 CFLAGS-tst-ssp-1.c += -fstack-protector-all
 
-tests = backtrace-tst tst-longjmp_chk tst-chk1 tst-chk2 tst-chk3 \
-	tst-lfschk1 tst-lfschk2 tst-lfschk3 test-strcpy_chk test-stpcpy_chk \
-	tst-chk4 tst-chk5 tst-chk6 tst-chk7 tst-chk8 tst-lfschk4 tst-lfschk5 \
-	tst-lfschk6 tst-longjmp_chk2 tst-backtrace2 tst-backtrace3 \
-	tst-backtrace4 tst-backtrace5 tst-backtrace6 tst-realpath-chk
+tests = backtrace-tst \
+	tst-longjmp_chk \
+	test-strcpy_chk \
+	test-stpcpy_chk \
+	tst-longjmp_chk2 \
+	tst-backtrace2 \
+	tst-backtrace3 \
+	tst-backtrace4 \
+	tst-backtrace5 \
+	tst-backtrace6 \
+	tst-realpath-chk \
+	$(tests-all-chk)
 
 ifeq ($(have-ssp),yes)
 tests += tst-ssp-1
 endif
 
 ifeq (,$(CXX))
-tests-unsupported = tst-chk4 tst-chk5 tst-chk6 tst-chk8 \
-		    tst-lfschk4 tst-lfschk5 tst-lfschk6
+tests-unsupported = $(tests-cc-chk)
 endif
 
 extra-libs = libSegFault libpcprofile
@@ -191,20 +226,10 @@ ifeq ($(run-built-tests),yes)
 LOCALES := de_DE.UTF-8
 include ../gen-locales.mk
 
-$(objpfx)tst-chk1.out: $(gen-locales)
-$(objpfx)tst-chk2.out: $(gen-locales)
-$(objpfx)tst-chk3.out: $(gen-locales)
-$(objpfx)tst-chk4.out: $(gen-locales)
-$(objpfx)tst-chk5.out: $(gen-locales)
-$(objpfx)tst-chk6.out: $(gen-locales)
-$(objpfx)tst-chk7.out: $(gen-locales)
-$(objpfx)tst-chk8.out: $(gen-locales)
-$(objpfx)tst-lfschk1.out: $(gen-locales)
-$(objpfx)tst-lfschk2.out: $(gen-locales)
-$(objpfx)tst-lfschk3.out: $(gen-locales)
-$(objpfx)tst-lfschk4.out: $(gen-locales)
-$(objpfx)tst-lfschk5.out: $(gen-locales)
-$(objpfx)tst-lfschk6.out: $(gen-locales)
+define chk-gen-locales
+$(objpfx)$(1).out: $(gen-locales)
+endef
+$(foreach t, $(tests-all-chk), $(eval $(call chk-gen-locales,$(t))))
 endif
 
 sLIBdir := $(shell echo $(slibdir) | sed 's,lib\(\|64\)$$,\\\\$$LIB,')
diff --git a/debug/tst-chk2.c b/debug/tst-chk2.c
deleted file mode 100644
index be37ce2d22..0000000000
--- a/debug/tst-chk2.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#define _FORTIFY_SOURCE 1
-#include "tst-chk1.c"
diff --git a/debug/tst-chk3.c b/debug/tst-chk3.c
deleted file mode 100644
index 38b8e4fb36..0000000000
--- a/debug/tst-chk3.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#define _FORTIFY_SOURCE 2
-#include "tst-chk1.c"
diff --git a/debug/tst-chk4.cc b/debug/tst-chk4.cc
deleted file mode 100644
index c82e6aac86..0000000000
--- a/debug/tst-chk4.cc
+++ /dev/null
@@ -1 +0,0 @@
-#include "tst-chk1.c"
diff --git a/debug/tst-chk5.cc b/debug/tst-chk5.cc
deleted file mode 100644
index be37ce2d22..0000000000
--- a/debug/tst-chk5.cc
+++ /dev/null
@@ -1,2 +0,0 @@
-#define _FORTIFY_SOURCE 1
-#include "tst-chk1.c"
diff --git a/debug/tst-chk6.cc b/debug/tst-chk6.cc
deleted file mode 100644
index 38b8e4fb36..0000000000
--- a/debug/tst-chk6.cc
+++ /dev/null
@@ -1,2 +0,0 @@
-#define _FORTIFY_SOURCE 2
-#include "tst-chk1.c"
diff --git a/debug/tst-chk7.c b/debug/tst-chk7.c
deleted file mode 100644
index 2a7b323812..0000000000
--- a/debug/tst-chk7.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#define _FORTIFY_SOURCE 3
-#include "tst-chk1.c"
diff --git a/debug/tst-chk8.cc b/debug/tst-chk8.cc
deleted file mode 100644
index 2a7b323812..0000000000
--- a/debug/tst-chk8.cc
+++ /dev/null
@@ -1,2 +0,0 @@
-#define _FORTIFY_SOURCE 3
-#include "tst-chk1.c"
diff --git a/debug/tst-chk1.c b/debug/tst-fortify.c
similarity index 100%
rename from debug/tst-chk1.c
rename to debug/tst-fortify.c
diff --git a/debug/tst-lfschk1.c b/debug/tst-lfschk1.c
deleted file mode 100644
index f3e6d47d5e..0000000000
--- a/debug/tst-lfschk1.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#define _FILE_OFFSET_BITS 64
-#include "tst-chk1.c"
diff --git a/debug/tst-lfschk2.c b/debug/tst-lfschk2.c
deleted file mode 100644
index 95d4db1d32..0000000000
--- a/debug/tst-lfschk2.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#define _FILE_OFFSET_BITS 64
-#include "tst-chk2.c"
diff --git a/debug/tst-lfschk3.c b/debug/tst-lfschk3.c
deleted file mode 100644
index 50a1ae1258..0000000000
--- a/debug/tst-lfschk3.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#define _FILE_OFFSET_BITS 64
-#include "tst-chk3.c"
diff --git a/debug/tst-lfschk4.cc b/debug/tst-lfschk4.cc
deleted file mode 100644
index f3e6d47d5e..0000000000
--- a/debug/tst-lfschk4.cc
+++ /dev/null
@@ -1,2 +0,0 @@
-#define _FILE_OFFSET_BITS 64
-#include "tst-chk1.c"
diff --git a/debug/tst-lfschk5.cc b/debug/tst-lfschk5.cc
deleted file mode 100644
index 95d4db1d32..0000000000
--- a/debug/tst-lfschk5.cc
+++ /dev/null
@@ -1,2 +0,0 @@
-#define _FILE_OFFSET_BITS 64
-#include "tst-chk2.c"
diff --git a/debug/tst-lfschk6.cc b/debug/tst-lfschk6.cc
deleted file mode 100644
index 50a1ae1258..0000000000
--- a/debug/tst-lfschk6.cc
+++ /dev/null
@@ -1,2 +0,0 @@
-#define _FILE_OFFSET_BITS 64
-#include "tst-chk3.c"
-- 
2.35.1


  parent reply	other threads:[~2022-03-11 15:13 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-11 15:11 [committed 2.34 0/8] _FORTIFY_SOURCE=3 and fixes Siddhesh Poyarekar
2022-03-11 15:11 ` [committed 2.34 1/8] Don't add access size hints to fortifiable functions Siddhesh Poyarekar
2022-03-11 15:11 ` [committed 2.34 2/8] Make sure that the fortified function conditionals are constant Siddhesh Poyarekar
2022-03-11 15:11 ` [committed 2.34 3/8] debug: Add tests for _FORTIFY_SOURCE=3 Siddhesh Poyarekar
2022-03-11 15:11 ` [committed 2.34 4/8] __glibc_unsafe_len: Fix comment Siddhesh Poyarekar
2022-03-11 15:12 ` [committed 2.34 5/8] fortify: Fix spurious warning with realpath Siddhesh Poyarekar
2022-03-11 15:12 ` [committed 2.34 6/8] Enable _FORTIFY_SOURCE=3 for gcc 12 and above Siddhesh Poyarekar
2022-03-11 15:12 ` Siddhesh Poyarekar [this message]
2022-03-11 15:12 ` [committed 2.34 8/8] debug: Synchronize feature guards in fortified functions [BZ #28746] Siddhesh Poyarekar

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