Parse very large numbers as Infinity

kgiszczak · Feb 10, 2024 · 13c11f0 · 13c11f0
1 parent 49a5dd3
commit 13c11f0
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Showing 5 changed files with 11 additions and 2 deletions.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## [0.7.0] - 2024-02-10
 
 - Update tomlc99 to the latest version
+- Parse very large numbers as Infinity
 
 ## [0.6.0] - 2023-05-05
 

diff --git a/ext/tomlib/toml.c b/ext/tomlib/toml.c
@@ -2203,7 +2203,7 @@ int toml_rtod_ex(toml_raw_t src, double *ret_, char *buf, int buflen) {
 }
 
 int toml_rtod(toml_raw_t src, double *ret_) {
-  char buf[100];
+  char buf[400];
   return toml_rtod_ex(src, ret_, buf, sizeof(buf));
 }
 

diff --git a/ext/tomlib/tomlib.c b/ext/tomlib/tomlib.c
@@ -187,7 +187,7 @@ static VALUE toml_table_key_to_rb_value(const toml_table_t *table, const char *k
 
   datum = toml_double_in(table, key);
 
-  if (datum.ok) {
+  if (datum.ok || datum.u.d == INFINITY || datum.u.d == -INFINITY) {
     return DBL2NUM(datum.u.d);
   }
 

diff --git a/spec/examples/parser/valid/spec-very-large-floats.toml b/spec/examples/parser/valid/spec-very-large-floats.toml
@@ -0,0 +1,4 @@
+ex1 = 1e1000
+ex2 = -1e1000
+ex3 = 9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999.0
+ex4 = -9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999.0
diff --git a/spec/examples/parser/valid/spec-very-large-floats.yaml b/spec/examples/parser/valid/spec-very-large-floats.yaml
@@ -0,0 +1,4 @@
+ex1: .inf
+ex2: -.inf
+ex3: .inf
+ex4: -.inf