diff options
| -rw-r--r-- | strings/dtoa.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/strings/dtoa.c b/strings/dtoa.c index 05c9bb6e529..f7c38b2420d 100644 --- a/strings/dtoa.c +++ b/strings/dtoa.c @@ -1009,6 +1009,7 @@ static Bigint *pow5mult(Bigint *b, int k, Stack_alloc *alloc) Bigint *b1, *p5, *p51=NULL; int i; static int p05[3]= { 5, 25, 125 }; + my_bool overflow= FALSE; if ((i= k & 3)) b= multadd(b, p05[i-1], 0, alloc); @@ -1027,16 +1028,19 @@ static Bigint *pow5mult(Bigint *b, int k, Stack_alloc *alloc) if (!(k>>= 1)) break; /* Calculate next power of 5 */ - if (p5 < p5_a + P5A_MAX) - ++p5; - else if (p5 == p5_a + P5A_MAX) - p5= mult(p5, p5, alloc); - else + if (overflow) { p51= mult(p5, p5, alloc); Bfree(p5, alloc); p5= p51; } + else if (p5 < p5_a + P5A_MAX) + ++p5; + else if (p5 == p5_a + P5A_MAX) + { + p5= mult(p5, p5, alloc); + overflow= TRUE; + } } if (p51) Bfree(p51, alloc); |