Ion binary crashes with floating point exception

[docfate111]

Running build-release.sh to install creates ion and ionizer.
Going into ion-c/build/release/tools/cli

Running

ion process [filename]

cause floating point exception for some inputs such as

[[1, -12D516753754312305], [-629107941, 255.0], []]

or

[[1, -12.516753754312305], [-6D9107941, 255.0], []]

[tgregg]

This error is triggered by the following numbers.

-12D516753754312305
-6D9107941

This seems to be because the decNumber library does not support exponents this large. It should fail more gracefully than with SIGFPE, though.

Do you have a use case for decimals with exponents this large?

[docfate111]

No I am just practicing fuzzing stuff/looking for security issues.

[tgregg]

Thanks for the report, @docfate111 . I'm going to reopen this so we can raise a more graceful error.

[m6w6]

Is there any reason decContext.traps is actually set?

diff --git a/tools/events/ion_event_util.cpp b/tools/events/ion_event_util.cpp
index 5a26a5d..5f61843 100644
--- a/tools/events/ion_event_util.cpp
+++ b/tools/events/ion_event_util.cpp
@@ -22,7 +22,7 @@ decContext g_IonEventDecimalContext = {
         DEC_MAX_MATH,                   // max exponent
         -DEC_MAX_MATH,                  // min exponent
         DEC_ROUND_HALF_EVEN,            // rounding mode
-        DEC_Errors,                     // trap conditions
+        0,                              // trap conditions
         0,                              // status flags
         0                               // apply exponent clamp?
 };

{
  error_type: READ,
  message: "/home/mike/src/ion-c/tools/events/ion_event_stream.cpp:364 : IERR_NUMERIC_OVERFLOW",
  location: "sigfpe.ion"
}