diff options
Diffstat (limited to 'pp_hot.c')
| -rw-r--r-- | pp_hot.c | 9 |
1 files changed, 5 insertions, 4 deletions
@@ -647,8 +647,8 @@ PP(pp_add) if (aiv >= 0) { auv = aiv; auvok = 1; /* Now acting as a sign flag. */ - } else { /* 2s complement assumption for IV_MIN */ - auv = (UV)-aiv; + } else { + auv = (aiv == IV_MIN) ? (UV)aiv : (UV)(-aiv); } } a_valid = 1; @@ -668,7 +668,7 @@ PP(pp_add) buv = biv; buvok = 1; } else - buv = (UV)-biv; + buv = (biv == IV_MIN) ? (UV)biv : (UV)(-biv); } /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, else "IV" now, independent of how it came in. @@ -709,7 +709,8 @@ PP(pp_add) else { /* Negate result */ if (result <= (UV)IV_MIN) - SETi( -(IV)result ); + SETi(result == (UV)IV_MIN + ? IV_MIN : -(IV)result); else { /* result valid, but out of range for IV. */ SETn( -(NV)result ); |