Remove redundant include headers.

- stdlib.h
- stddef.h
- stdint.h
- stdarg.h
- limits.h
- float.h

11 files changed, 11 insertions, 25 deletions

diff --git a/src/class.c b/src/class.c
index 33a610c26..cf438d55e 100644
--- a/src/class.c
+++ b/src/class.c
@@ -4,7 +4,6 @@
 ** See Copyright Notice in mruby.h
 */
 
-#include <stdarg.h>
 #include <mruby.h>
 #include <mruby/array.h>
 #include <mruby/hash.h>
diff --git a/src/dump.c b/src/dump.c
index 628c3dbc4..94d5cf74d 100644
--- a/src/dump.c
+++ b/src/dump.c
@@ -5,7 +5,6 @@
 */
 
 #include <string.h>
-#include <limits.h>
 #include <math.h>
 #include <mruby/dump.h>
 #include <mruby/string.h>
diff --git a/src/error.c b/src/error.c
index 7953deea7..45e118b96 100644
--- a/src/error.c
+++ b/src/error.c
@@ -5,7 +5,6 @@
 */
 
 #include <errno.h>
-#include <stdarg.h>
 #include <stdlib.h>
 #include <mruby.h>
 #include <mruby/array.h>
diff --git a/src/fmt_fp.c b/src/fmt_fp.c
index 43daf2307..bac62b88a 100644
--- a/src/fmt_fp.c
+++ b/src/fmt_fp.c
@@ -1,6 +1,5 @@
 #include <mruby.h>
 #include <string.h>
-#include <stdlib.h>
 
 #ifndef MRB_NO_FLOAT
 /***********************************************************************
diff --git a/src/gc.c b/src/gc.c
index bcd0b29b6..a40bd8545 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -5,7 +5,6 @@
 */
 
 #include <string.h>
-#include <stdlib.h>
 #ifdef MRB_USE_MALLOC_TRIM
 #include <malloc.h>
 #endif
@@ -24,6 +23,10 @@
 #include <mruby/throw.h>
 #include <mruby/presym.h>
 
+#ifdef MRB_GC_STRESS
+#include <stdlib.h>
+#endif
+
 /*
   = Tri-color Incremental Garbage Collection
 
diff --git a/src/load.c b/src/load.c
index bd0811743..83e06f1f8 100644
--- a/src/load.c
+++ b/src/load.c
@@ -4,8 +4,6 @@
 ** See Copyright Notice in mruby.h
 */
 
-#include <limits.h>
-#include <stdlib.h>
 #include <string.h>
 #include <math.h>
 #include <mruby/dump.h>
diff --git a/src/numeric.c b/src/numeric.c
index b22026ebb..17f5ac1bc 100644
--- a/src/numeric.c
+++ b/src/numeric.c
@@ -5,11 +5,8 @@
 */
 
 #ifndef MRB_NO_FLOAT
-#include <float.h>
 #include <math.h>
 #endif
-#include <limits.h>
-#include <stdlib.h>
 #include <string.h>
 
 #include <mruby.h>
diff --git a/src/readflt.c b/src/readflt.c
index 19a8e8dc6..b320a43c1 100644
--- a/src/readflt.c
+++ b/src/readflt.c
@@ -20,7 +20,6 @@ My modifications in this file are also placed in the public domain.
 Matz (Yukihiro Matsumoto)
 */
 
-#include <stdlib.h>
 #include <string.h>
 #include <math.h>
 #include <errno.h>
diff --git a/src/string.c b/src/string.c
index 03d9c8a9c..2258cc218 100644
--- a/src/string.c
+++ b/src/string.c
@@ -8,14 +8,6 @@
 # define _CRT_NONSTDC_NO_DEPRECATE
 #endif
 
-#ifndef MRB_NO_FLOAT
-#include <float.h>
-#include <math.h>
-#endif
-#include <limits.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
 #include <mruby.h>
 #include <mruby/array.h>
 #include <mruby/class.h>
@@ -23,6 +15,10 @@
 #include <mruby/string.h>
 #include <mruby/numeric.h>
 #include <mruby/presym.h>
+#ifndef MRB_NO_FLOAT
+#include <math.h>
+#endif
+#include <string.h>
 
 typedef struct mrb_shared_string {
   int refcnt;
diff --git a/src/symbol.c b/src/symbol.c
index 007b8c885..5b05f1a9f 100644
--- a/src/symbol.c
+++ b/src/symbol.c
@@ -4,7 +4,6 @@
 ** See Copyright Notice in mruby.h
 */
 
-#include <limits.h>
 #include <string.h>
 #include <mruby.h>
 #include <mruby/khash.h>
diff --git a/src/vm.c b/src/vm.c
index cd70faf11..d52d690f5 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -4,11 +4,6 @@
 ** See Copyright Notice in mruby.h
 */
 
-#include <stddef.h>
-#include <stdarg.h>
-#ifndef MRB_NO_FLOAT
-#include <math.h>
-#endif
 #include <mruby.h>
 #include <mruby/array.h>
 #include <mruby/class.h>
@@ -25,6 +20,9 @@
 #include <mruby/throw.h>
 #include <mruby/dump.h>
 #include <mruby/presym.h>
+#ifndef MRB_NO_FLOAT
+#include <math.h>
+#endif
 
 #ifdef MRB_NO_STDIO
 #if defined(__cplusplus)