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authorMax Ostapenko <m.ostapenko@partner.samsung.com>2015-10-21 10:51:03 +0300
committerMaxim Ostapenko <chefmax@gcc.gnu.org>2015-10-21 10:51:03 +0300
commit21d6106320c64bfd87ee81a3c0e342ba7697e0a3 (patch)
tree7f623e5c442aab66f9a863b9042ba31de703ef00 /libsanitizer
parent15ebe1fe46a75067b027128e35d75b17a5d4e299 (diff)
downloadgcc-21d6106320c64bfd87ee81a3c0e342ba7697e0a3.tar.gz
sanitizer_stacktrace.cc (GetCanonicFrame): Assume we compiled code with GCC when extracting the caller PC for ARM if...
libsanitizer/ * sanitizer_common/sanitizer_stacktrace.cc (GetCanonicFrame): Assume we compiled code with GCC when extracting the caller PC for ARM if no valid frame pointer is available. From-SVN: r229115
Diffstat (limited to 'libsanitizer')
-rw-r--r--libsanitizer/ChangeLog6
-rw-r--r--libsanitizer/sanitizer_common/sanitizer_stacktrace.cc4
2 files changed, 8 insertions, 2 deletions
diff --git a/libsanitizer/ChangeLog b/libsanitizer/ChangeLog
index 80ce1585857..2ed4cc32191 100644
--- a/libsanitizer/ChangeLog
+++ b/libsanitizer/ChangeLog
@@ -1,5 +1,11 @@
2015-10-21 Maxim Ostapenko <m.ostapenko@partner.samsung.com>
+ * sanitizer_common/sanitizer_stacktrace.cc (GetCanonicFrame): Assume we
+ compiled code with GCC when extracting the caller PC for ARM if no
+ valid frame pointer is available.
+
+2015-10-21 Maxim Ostapenko <m.ostapenko@partner.samsung.com>
+
PR bootstrap/63888
Reapply:
2015-02-20 Jakub Jelinek <jakub@redhat.com>
diff --git a/libsanitizer/sanitizer_common/sanitizer_stacktrace.cc b/libsanitizer/sanitizer_common/sanitizer_stacktrace.cc
index 7b0c084b1a2..796d472a1eb 100644
--- a/libsanitizer/sanitizer_common/sanitizer_stacktrace.cc
+++ b/libsanitizer/sanitizer_common/sanitizer_stacktrace.cc
@@ -60,8 +60,8 @@ static inline uhwptr *GetCanonicFrame(uptr bp,
// Nope, this does not look right either. This means the frame after next does
// not have a valid frame pointer, but we can still extract the caller PC.
// Unfortunately, there is no way to decide between GCC and LLVM frame
- // layouts. Assume LLVM.
- return bp_prev;
+ // layouts. Assume GCC.
+ return bp_prev - 1;
#else
return (uhwptr*)bp;
#endif