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The sigsegv example exited by sigfpe. Fixed!

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This commit is contained in:
Kjell Hedsröm 2015-11-22 16:35:36 -07:00
parent df093e3563
commit 11e22dd40d
1 changed files with 15 additions and 1 deletions
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16
example/main_sigsegv.cpp
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@ -44,6 +44,15 @@ namespace example_fatal
int zero = 0; // trying to fool the compiler to automatically warn int zero = 0; // trying to fool the compiler to automatically warn
LOG(INFO) << "This is a bad operation [value/zero] : " << value / zero; LOG(INFO) << "This is a bad operation [value/zero] : " << value / zero;
} }
void tryToKillWithAccessingIllegalPointer(std::unique_ptr<std::string> badStringPtr) {
auto badPtr = std::move(badStringPtr);
LOG(INFO) << "Function calls through a nullptr object will trigger SIGSEGV";
badStringPtr->append("crashing");
}
} // example fatal } // example fatal
@ -96,8 +105,13 @@ int main(int argc, char **argv)
// OK --- on Ubunti this caused get a compiler warning with gcc4.6 // OK --- on Ubunti this caused get a compiler warning with gcc4.6
// from gcc 4.7.2 (at least) it causes a crash (as expected) // from gcc 4.7.2 (at least) it causes a crash (as expected)
// On windows itll probably crash // On windows itll probably crash
//example_fatal::tryToKillWithIllegalPrintout(); example_fatal::tryToKillWithIllegalPrintout();
// try 2
std::unique_ptr<std::string> badStringPtr;
example_fatal::tryToKillWithAccessingIllegalPointer(std::move(badStringPtr));
// what happened? OK. let us just exit with SIGFPE
int value = 1; // system dependent but it SHOULD never reach this line int value = 1; // system dependent but it SHOULD never reach this line
example_fatal::killByZeroDivision(value); example_fatal::killByZeroDivision(value);
return 0; return 0;