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Improve boostrap-ubsan config (PR bootstrap/64914).

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2018-05-10  Martin Liska  <mliska@suse.cz>

	PR bootstrap/64914
	* bootstrap-ubsan.mk: Define UBSAN_BOOTSTRAP.
2018-05-10  Martin Liska  <mliska@suse.cz>

	PR bootstrap/64914
	* md5.c: Use strict alignment with UBSAN_BOOTSTRAP.

From-SVN: r260112
This commit is contained in:
Martin Liska 2018-05-10 12:15:42 +02:00 committed by Martin Liska
parent 427a7384b9
commit 84ec5aea48
4 changed files with 14 additions and 4 deletions
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5
config/ChangeLog
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@ -1,3 +1,8 @@
2018-05-10 Martin Liska <mliska@suse.cz>
PR bootstrap/64914
* bootstrap-ubsan.mk: Define UBSAN_BOOTSTRAP.
2018-05-09 Joshua Watt <jpewhacker@gmail.com>
* ax_pthread.m4: Add file.

6
config/bootstrap-ubsan.mk
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@ -1,8 +1,8 @@
# This option enables -fsanitize=undefined for stage2 and stage3.
STAGE2_CFLAGS += -fsanitize=undefined
STAGE3_CFLAGS += -fsanitize=undefined
POSTSTAGE1_LDFLAGS += -fsanitize=undefined -static-libubsan \
STAGE2_CFLAGS += -fsanitize=undefined -DUBSAN_BOOTSTRAP
STAGE3_CFLAGS += -fsanitize=undefined -DUBSAN_BOOTSTRAP
POSTSTAGE1_LDFLAGS += -fsanitize=undefined -static-libubsan -DUBSAN_BOOTSTRAP \
-B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/ \
-B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/ubsan/ \
-B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/ubsan/.libs

5
libiberty/ChangeLog
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@ -1,3 +1,8 @@
2018-05-10 Martin Liska <mliska@suse.cz>
PR bootstrap/64914
* md5.c: Use strict alignment with UBSAN_BOOTSTRAP.
2018-04-30 Daniel van Gerpen <daniel@vangerpen.de>
* argv.c (expandargv): Fix memory leak for copied argv.

2
libiberty/md5.c
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@ -231,7 +231,7 @@ md5_process_bytes (const void *buffer, size_t len, struct md5_ctx *ctx)
/* Process available complete blocks. */
if (len > 64)
{
#if !_STRING_ARCH_unaligned
#if !_STRING_ARCH_unaligned || defined UBSAN_BOOTSTRAP
/* To check alignment gcc has an appropriate operator. Other
compilers don't. */
# if __GNUC__ >= 2