Replace alloca() with c99 or gcc extension variable-length arrays.

2 files changed, 2 insertions, 3 deletions

diff --git a/backtrace-symbols.c b/backtrace-symbols.c
index 018879d..ff91bea 100644
--- a/backtrace-symbols.c
+++ b/backtrace-symbols.c
@@ -45,7 +45,6 @@
 #define false 0
 
 #define _GNU_SOURCE
-#include <alloca.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -324,7 +323,7 @@ char **backtrace_symbols(void /*const*/ *const *const vector, int const length)
 	int const stack_depth = length - 1;
 
 	int total = 0;
-	char ***const locations = alloca(sizeof(char **) * (stack_depth+1));
+	char **locations[1+ stack_depth];  /* c99 or gcc extension */
 
 	bfd_init();
 	int x;
diff --git a/memstomp.c b/memstomp.c
index 7339872..28a0320 100644
--- a/memstomp.c
+++ b/memstomp.c
@@ -223,7 +223,7 @@ static char* generate_stacktrace(void) {
         size_t k;
         bool b;
 
-        void **const buffer = alloca(sizeof(void*) * frames_max);
+        void *buffer[frames_max];  /* c99 or gcc extension */
 
         n = real_backtrace(buffer, frames_max);
         assert(n >= 0);