Revert "Add SIGTERM support (#12881)"

Crashlytics/CHANGELOG.md

@@ -1,3 +1,6 @@
+# Unreleased
+- [changed] Reverted "Add SIGTERM support (#12881)" (#13117)
+
 # 10.28.0
 - [fixed] Created a new queue for rollouts persistence writes and made sure rollouts logging queue is not nil while dispatching (#12913).
 

Crashlytics/Crashlytics/Controllers/FIRCLSMetricKitManager.m

@@ -438,8 +438,6 @@ - (NSString *)getSignalName:(NSNumber *)signalCode {
       return @"SIGSYS";
     case SIGTRAP:
       return @"SIGTRAP";
-    case SIGTERM:
-      return @"SIGTERM";
     default:
       return @"UNKNOWN";
   }

Crashlytics/Crashlytics/Handlers/FIRCLSMachException.c

@@ -150,8 +150,6 @@ exception_mask_t FIRCLSMachExceptionMaskForSignal(int signal) {
       return EXC_MASK_CRASH;
     case SIGFPE:
       return EXC_MASK_ARITHMETIC;
-    case SIGTERM:
-      return EXC_MASK_CRASH;
   }
 
   return 0;

Crashlytics/Crashlytics/Handlers/FIRCLSSignal.c

@@ -21,17 +21,8 @@
 #include <stdlib.h>
 
 #if CLS_SIGNAL_SUPPORTED
-static const int FIRCLSFatalSignals[FIRCLSSignalCount] = {
-    SIGABRT, SIGBUS, SIGFPE, SIGILL,
-    SIGSEGV, SIGSYS, SIGTRAP,
-    // SIGTERM can be caught and is usually sent by iOS and variants
-    // when Apple wants to try and gracefully shutdown the app
-    // before sending a SIGKILL (which can't be caught).
-    // Some areas I've seen this happen are:
-    // - When the OS updates an app.
-    // - In some circumstances for Watchdog Events.
-    // - Resource overuse (CPU, Disk, ...).
-    SIGTERM};
+static const int FIRCLSFatalSignals[FIRCLSSignalCount] = {SIGABRT, SIGBUS, SIGFPE, SIGILL,
+                                                          SIGSEGV, SIGSYS, SIGTRAP};
 
 #if CLS_USE_SIGALTSTACK
 static void FIRCLSSignalInstallAltStack(FIRCLSSignalReadContext *roContext);
@@ -246,9 +237,6 @@ void FIRCLSSignalNameLookup(int number, int code, const char **name, const char
     case SIGTRAP:
       *name = "SIGTRAP";
       break;
-    case SIGTERM:
-      *name = "SIGTERM";
-      break;
     default:
       *name = "UNKNOWN";
       break;

Crashlytics/Crashlytics/Handlers/FIRCLSSignal.h

@@ -30,8 +30,7 @@
 #endif
 
 #if CLS_SIGNAL_SUPPORTED
-// keep in sync with the list in _FIRCLSFatalSignals_.
-#define FIRCLSSignalCount (8)
+#define FIRCLSSignalCount (7)
 
 typedef struct {
   const char* path;