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-rw-r--r--src/libmain/stack.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libmain/stack.cc b/src/libmain/stack.cc
index 64df95547e0b..b670e695d140 100644
--- a/src/libmain/stack.cc
+++ b/src/libmain/stack.cc
@@ -18,7 +18,7 @@ static void sigsegvHandler(int signo, siginfo_t * info, void * ctx)
        the stack pointer.  Unfortunately, getting the stack pointer is
        not portable. */
     bool haveSP = true;
-    char * sp;
+    char * sp = 0;
 #if defined(__x86_64__) && defined(REG_RSP)
     sp = (char *) ((ucontext *) ctx)->uc_mcontext.gregs[REG_RSP];
 #elif defined(REG_ESP)