X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fruntime.c;h=a4fc68adbf13ced6c1fc871b5d4c63830ed19035;hb=f2b65035e35f3f7ae5f645cea6338538235ca899;hp=ab619517738c6eab6f77e486e161d555901beb07;hpb=3106aee96a20d1a76a114e504bc2931f8196cace;p=sbcl.git

diff --git a/src/runtime/runtime.c b/src/runtime/runtime.c
index ab61951..a4fc68a 100644
--- a/src/runtime/runtime.c
+++ b/src/runtime/runtime.c
@@ -194,7 +194,7 @@ search_for_core ()
     char *stem = "/sbcl.core";
     char *core;
 
-    if(!sbcl_home) sbcl_home = SBCL_HOME;
+    if (!(sbcl_home && *sbcl_home)) sbcl_home = SBCL_HOME;
     lookhere = (char *) calloc(strlen(sbcl_home) +
                                strlen(stem) +
                                1,
@@ -234,6 +234,7 @@ main(int argc, char *argv[], char *envp[])
     boolean end_runtime_options = 0;
 
     lispobj initial_function;
+    const char *sbcl_home = getenv("SBCL_HOME");
 
     interrupt_init();
     block_blockable_signals();
@@ -332,7 +333,7 @@ main(int argc, char *argv[], char *envp[])
     }
 
     /* Align down to multiple of page_table page size */
-    dynamic_space_size = (dynamic_space_size/PAGE_BYTES) * PAGE_BYTES;
+    dynamic_space_size &= ~(PAGE_BYTES - 1);
 
     /* KLUDGE: os_vm_page_size is set by os_init(), and on some
      * systems (e.g. Alpha) arch_init() needs need os_vm_page_size, so
@@ -361,8 +362,9 @@ main(int argc, char *argv[], char *envp[])
        }
     }
 
-    /* Make sure that SBCL_HOME is set, unless loading an embedded core. */
-    if (!getenv("SBCL_HOME") && embedded_core_offset == 0) {
+    /* Make sure that SBCL_HOME is set and not the empty string,
+       unless loading an embedded core. */
+    if (!(sbcl_home && *sbcl_home) && embedded_core_offset == 0) {
         char *envstring, *copied_core, *dir;
         char *stem = "SBCL_HOME=";
         copied_core = copied_string(core);