Constified variables for getenv

4 files changed, 5 insertions, 5 deletions

diff --git a/cont.c b/cont.c
index e8ac786031..e02942681a 100644
--- a/cont.c
+++ b/cont.c
@@ -3053,7 +3053,7 @@ Init_Cont(void)
     fiber_initialize_keywords[0] = rb_intern_const("blocking");
     fiber_initialize_keywords[1] = rb_intern_const("pool");
 
-    char * fiber_shared_fiber_pool_free_stacks = getenv("RUBY_SHARED_FIBER_POOL_FREE_STACKS");
+    const char *fiber_shared_fiber_pool_free_stacks = getenv("RUBY_SHARED_FIBER_POOL_FREE_STACKS");
     if (fiber_shared_fiber_pool_free_stacks) {
         shared_fiber_pool.free_stacks = atoi(fiber_shared_fiber_pool_free_stacks);
     }
diff --git a/dln_find.c b/dln_find.c
index ca62441631..6fe847e601 100644
--- a/dln_find.c
+++ b/dln_find.c
@@ -218,7 +218,7 @@ dln_find_1(const char *fname, const char *path, char *fbuf, size_t size,
 			       dp[1] == '\\' ||
 #endif
 			       dp[1] == '/')) {
-		char *home;
+		const char *home;
 
 		home = getenv("HOME");
 		if (home != NULL) {
diff --git a/gc.c b/gc.c
index b9f49db600..5ec317ddc7 100644
--- a/gc.c
+++ b/gc.c
@@ -10013,7 +10013,7 @@ gc_get_auto_compact(rb_execution_context_t *ec, VALUE _)
 static int
 get_envparam_size(const char *name, size_t *default_value, size_t lower_bound)
 {
-    char *ptr = getenv(name);
+    const char *ptr = getenv(name);
     ssize_t val;
 
     if (ptr != NULL && *ptr) {
@@ -10071,7 +10071,7 @@ get_envparam_size(const char *name, size_t *default_value, size_t lower_bound)
 static int
 get_envparam_double(const char *name, double *default_value, double lower_bound, double upper_bound, int accept_zero)
 {
-    char *ptr = getenv(name);
+    const char *ptr = getenv(name);
     double val;
 
     if (ptr != NULL && *ptr) {
diff --git a/ruby.c b/ruby.c
index f297c2b0a8..113e895bb2 100644
--- a/ruby.c
+++ b/ruby.c
@@ -1803,7 +1803,7 @@ process_options(int argc, char **argv, ruby_cmdline_options_t *opt)
 		opt->script = "-";
 	    }
 	    else if (opt->do_search) {
-		char *path = getenv("RUBYPATH");
+		const char *path = getenv("RUBYPATH");
 
 		opt->script = 0;
 		if (path) {