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Fix some apparently longstanding crash bugs in Stackwalker implementations when resolver is NULL.

Browse Source 
R=mark at http://breakpad.appspot.com/257001

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@761 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
ted.mielczarek
2011-01-24 19:59:09 +00:00
parent b904343e14
commit 281d52d944
7 changed files with 75 additions and 13 deletions
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24
src/processor/stackwalker_arm_unittest.cc
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@@ -130,6 +130,24 @@ class StackwalkerARMFixture {
const vector<StackFrame *> *frames;
};
class SanityCheck: public StackwalkerARMFixture, public Test { };
TEST_F(SanityCheck, NoResolver) {
// Since we have no call frame information, and all unwinding
// requires call frame information, the stack walk will end after
// the first frame.
StackwalkerARM walker(&system_info, &raw_context, &stack_region, &modules,
NULL, NULL);
// This should succeed even without a resolver or supplier.
ASSERT_TRUE(walker.Walk(&call_stack));
frames = call_stack.frames();
ASSERT_EQ(1U, frames->size());
StackFrameARM *frame = static_cast<StackFrameARM *>(frames->at(0));
// Check that the values from the original raw context made it
// through to the context in the stack frame.
EXPECT_EQ(0, memcmp(&raw_context, &frame->context, sizeof(raw_context)));
}
class GetContextFrame: public StackwalkerARMFixture, public Test { };
TEST_F(GetContextFrame, Simple) {
@@ -144,7 +162,7 @@ TEST_F(GetContextFrame, Simple) {
StackFrameARM *frame = static_cast<StackFrameARM *>(frames->at(0));
// Check that the values from the original raw context made it
// through to the context in the stack frame.
EXPECT_TRUE(memcmp(&raw_context, &frame->context, sizeof(raw_context)) == 0);
EXPECT_EQ(0, memcmp(&raw_context, &frame->context, sizeof(raw_context)));
}
class GetCallerFrame: public StackwalkerARMFixture, public Test { };
@@ -192,7 +210,7 @@ TEST_F(GetCallerFrame, ScanWithoutSymbols) {
StackFrameARM *frame0 = static_cast<StackFrameARM *>(frames->at(0));
EXPECT_EQ(StackFrame::FRAME_TRUST_CONTEXT, frame0->trust);
ASSERT_EQ(StackFrameARM::CONTEXT_VALID_ALL, frame0->context_validity);
EXPECT_TRUE(memcmp(&raw_context, &frame0->context, sizeof(raw_context)) == 0);
EXPECT_EQ(0, memcmp(&raw_context, &frame0->context, sizeof(raw_context)));
StackFrameARM *frame1 = static_cast<StackFrameARM *>(frames->at(1));
EXPECT_EQ(StackFrame::FRAME_TRUST_SCAN, frame1->trust);
@@ -255,7 +273,7 @@ TEST_F(GetCallerFrame, ScanWithFunctionSymbols) {
StackFrameARM *frame0 = static_cast<StackFrameARM *>(frames->at(0));
EXPECT_EQ(StackFrame::FRAME_TRUST_CONTEXT, frame0->trust);
ASSERT_EQ(StackFrameARM::CONTEXT_VALID_ALL, frame0->context_validity);
EXPECT_TRUE(memcmp(&raw_context, &frame0->context, sizeof(raw_context)) == 0);
EXPECT_EQ(0, memcmp(&raw_context, &frame0->context, sizeof(raw_context)));
EXPECT_EQ("monotreme", frame0->function_name);
EXPECT_EQ(0x40000100, frame0->function_base);