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Code Issues 1 Releases Wiki Activity

Fix bad integer printing range.

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This commit is contained in:
Calvin Rose 2019-12-01 09:46:20 -05:00
parent 36ef1c4749
commit db261aabf4
1 changed files with 5 additions and 1 deletions
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6
src/core/pp.c
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@ -37,7 +37,11 @@
static void number_to_string_b(JanetBuffer *buffer, double x) { static void number_to_string_b(JanetBuffer *buffer, double x) {
janet_buffer_ensure(buffer, buffer->count + BUFSIZE, 2); janet_buffer_ensure(buffer, buffer->count + BUFSIZE, 2);
const char *fmt = (x == floor(x) && x <= 2.0e53 && x >= -2.0e53) ? "%.0f" : "%g"; /* Use int32_t range for valid integers because that is the
* range most integer-expecting functions in the C api use. */
const char *fmt = (x == floor(x) &&
x <= ((double) INT32_MAX) &&
x >= ((double) INT32_MIN)) ? "%.0f" : "%g";
int count = snprintf((char *) buffer->data + buffer->count, BUFSIZE, fmt, x); int count = snprintf((char *) buffer->data + buffer->count, BUFSIZE, fmt, x);
buffer->count += count; buffer->count += count;
} }