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Fix compile errors arising from compiling breakpad with clang.

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These compile errors occur when building the check target with:
CXX=clang++-3.8
CXXFLAGS="-Werror -Wconstant-conversion -g -O2 -std=c++11"

src/processor/stackwalker_mips.cc:60:9: error: comparison of constant
  18446744073709551615 with expression of type 'bool' is always false
  [Werror,-Wtautological-constant-out-of-range-compare]
        > 0xffffffffffffffff) {
        ^ ~~~~~~~~~~~~~~~~~~
src/processor/stackwalker_mips.cc:68:66: error: comparison of constant
  4294967295 with expression of type 'bool' is always false
  [-Werror,-Wtautological-constant-out-of-range-compare]
    if ((memory_ && memory_->GetBase() + memory_->GetSize() - 1) > 0xffffffff) {
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~

Change-Id: I29eed8f4a67b9feeb274aa1fc6c79a019135e8d6
Reviewed-on: https://chromium-review.googlesource.com/438445
Reviewed-by: Mike Frysinger <vapier@chromium.org>
This commit is contained in:
Tobias Sargeant 2017-02-06 17:57:54 +00:00 committed by Mike Frysinger
parent 6cc037526e
commit fd28a5bbe9
1 changed files with 17 additions and 16 deletions
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7
src/processor/stackwalker_mips.cc
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@ -55,9 +55,9 @@ StackwalkerMIPS::StackwalkerMIPS(const SystemInfo* system_info,
StackFrameSymbolizer* resolver_helper) StackFrameSymbolizer* resolver_helper)
: Stackwalker(system_info, memory, modules, resolver_helper), : Stackwalker(system_info, memory, modules, resolver_helper),
context_(context) { context_(context) {
if (memory_) {
if (context_->context_flags & MD_CONTEXT_MIPS64 ) { if (context_->context_flags & MD_CONTEXT_MIPS64 ) {
if ((memory_ && memory_->GetBase() + memory_->GetSize() - 1) if (0xffffffffffffffff - memory_->GetBase() < memory_->GetSize() - 1) {
> 0xffffffffffffffff) {
BPLOG(ERROR) << "Memory out of range for stackwalking mips64: " BPLOG(ERROR) << "Memory out of range for stackwalking mips64: "
<< HexString(memory_->GetBase()) << HexString(memory_->GetBase())
<< "+" << "+"
@ -65,7 +65,7 @@ StackwalkerMIPS::StackwalkerMIPS(const SystemInfo* system_info,
memory_ = NULL; memory_ = NULL;
} }
} else { } else {
if ((memory_ && memory_->GetBase() + memory_->GetSize() - 1) > 0xffffffff) { if (0xffffffff - memory_->GetBase() < memory_->GetSize() - 1) {
BPLOG(ERROR) << "Memory out of range for stackwalking mips32: " BPLOG(ERROR) << "Memory out of range for stackwalking mips32: "
<< HexString(memory_->GetBase()) << HexString(memory_->GetBase())
<< "+" << "+"
@ -73,6 +73,7 @@ StackwalkerMIPS::StackwalkerMIPS(const SystemInfo* system_info,
memory_ = NULL; memory_ = NULL;
} }
} }
}
} }
StackFrame* StackwalkerMIPS::GetContextFrame() { StackFrame* StackwalkerMIPS::GetContextFrame() {