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| author | Yukihiro "Matz" Matsumoto <[email protected]> | 2014-02-25 00:47:02 +0900 |
|---|---|---|
| committer | Yukihiro "Matz" Matsumoto <[email protected]> | 2014-02-25 00:47:02 +0900 |
| commit | c636386953f806c5edee574019cb3f923e8817f2 (patch) | |
| tree | a4914cc5d5143ed1b18e10aa3eae5b1099a8d896 /src/numeric.c | |
| parent | ddf9504558f88a664a9c7046ea104cbce9cc708e (diff) | |
| download | mruby-c636386953f806c5edee574019cb3f923e8817f2.tar.gz mruby-c636386953f806c5edee574019cb3f923e8817f2.zip | |
avoid accessing uninitialized string; ref ac936fc
Diffstat (limited to 'src/numeric.c')
| -rw-r--r-- | src/numeric.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/numeric.c b/src/numeric.c index ec7f05b97..e081cf80a 100644 --- a/src/numeric.c +++ b/src/numeric.c @@ -19,9 +19,11 @@ #define ceil(f) ceilf(f) #define fmod(x,y) fmodf(x,y) #define FLO_MAX_DIGITS 7 +#define FLO_MAX_SIGN_LENGTH 3 #define FLO_EPSILON FLT_EPSILON #else #define FLO_MAX_DIGITS 14 +#define FLO_MAX_SIGN_LENGTH 10 #define FLO_EPSILON DBL_EPSILON #endif @@ -159,6 +161,7 @@ mrb_flo_to_str(mrb_state *mrb, mrb_value flo) } } if (beg >= 0) length = end - beg; + if (length > FLO_MAX_SIGN_LENGTH) length = FLO_MAX_SIGN_LENGTH; } if (abs(exp) + length >= FLO_MAX_DIGITS) { @@ -166,7 +169,7 @@ mrb_flo_to_str(mrb_state *mrb, mrb_value flo) e = TRUE; n = n / pow(10.0, exp); if (isinf(n)) { - if (s[0] == '-') { + if (s < c) { /* s[0] == '-' */ return mrb_str_new_lit(mrb, "-0.0"); } else { |