[PATCH] D54771: [compiler-rt][UBSan] silence_unsigned_overflow: do *NOT* ignore *fatal* unsigned overflows
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Wed Nov 21 12:38:39 PST 2018
This revision was automatically updated to reflect the committed changes.
Closed by commit rL347415: [compiler-rt][UBSan] silence_unsigned_overflow: do *NOT* ignore *fatal*… (authored by lebedevri, committed by ).
Herald added a subscriber: delcypher.
Changed prior to commit:
https://reviews.llvm.org/D54771?vs=174829&id=174967#toc
Repository:
rL LLVM
https://reviews.llvm.org/D54771
Files:
compiler-rt/trunk/lib/ubsan/ubsan_flags.inc
compiler-rt/trunk/lib/ubsan/ubsan_handlers.cc
compiler-rt/trunk/test/ubsan/TestCases/Integer/no-recover.cpp
Index: compiler-rt/trunk/lib/ubsan/ubsan_flags.inc
===================================================================
--- compiler-rt/trunk/lib/ubsan/ubsan_flags.inc
+++ compiler-rt/trunk/lib/ubsan/ubsan_flags.inc
@@ -25,5 +25,5 @@
UBSAN_FLAG(bool, report_error_type, false,
"Print specific error type instead of 'undefined-behavior' in summary.")
UBSAN_FLAG(bool, silence_unsigned_overflow, false,
- "Do not print error reports for unsigned integer overflow. "
- "Used to provide fuzzing signal without blowing up logs.")
+ "Do not print non-fatal error reports for unsigned integer overflow. "
+ "Used to provide fuzzing signal without blowing up logs.")
Index: compiler-rt/trunk/lib/ubsan/ubsan_handlers.cc
===================================================================
--- compiler-rt/trunk/lib/ubsan/ubsan_handlers.cc
+++ compiler-rt/trunk/lib/ubsan/ubsan_handlers.cc
@@ -119,7 +119,9 @@
if (ignoreReport(Loc, Opts, ET))
return;
- if (!IsSigned && flags()->silence_unsigned_overflow)
+ // If this is an unsigned overflow in non-fatal mode, potentially ignore it.
+ if (!IsSigned && !Opts.FromUnrecoverableHandler &&
+ flags()->silence_unsigned_overflow)
return;
ScopedReport R(Opts, Loc, ET);
Index: compiler-rt/trunk/test/ubsan/TestCases/Integer/no-recover.cpp
===================================================================
--- compiler-rt/trunk/test/ubsan/TestCases/Integer/no-recover.cpp
+++ compiler-rt/trunk/test/ubsan/TestCases/Integer/no-recover.cpp
@@ -1,7 +1,9 @@
// RUN: %clangxx -fsanitize=unsigned-integer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=RECOVER
// RUN: %clangxx -fsanitize=unsigned-integer-overflow -fno-sanitize-recover=all -fsanitize-recover=unsigned-integer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=RECOVER
// RUN: %env_ubsan_opts=silence_unsigned_overflow=1 %run %t 2>&1 | FileCheck %s --check-prefix=SILENT-RECOVER --allow-empty
-// RUN: %clangxx -fsanitize=unsigned-integer-overflow -fno-sanitize-recover=unsigned-integer-overflow %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=ABORT
+// RUN: %clangxx -fsanitize=unsigned-integer-overflow -fno-sanitize-recover=unsigned-integer-overflow %s -o %t
+// RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=ABORT
+// RUN: %env_ubsan_opts=silence_unsigned_overflow=1 not %run %t 2>&1 | FileCheck %s --check-prefix=ABORT
#include <stdint.h>
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