alloca!

libregexp.c

@@ -30,6 +30,7 @@
 
 #include "cutils.h"
 #include "libregexp.h"
+#include "xalloca.h"
 
 /*
   TODO:
@@ -2529,7 +2530,7 @@ int lre_exec(uint8_t **capture,
     for(i = 0; i < s->capture_count * 2; i++)
         capture[i] = NULL;
     alloca_size = s->stack_size_max * sizeof(stack_buf[0]);
-    stack_buf = alloca(alloca_size);
+    stack_buf = xalloca(alloca_size);
     ret = lre_exec_backtrack(s, capture, stack_buf, 0, bc_buf + RE_HEADER_LEN,
                              cbuf + (cindex << cbuf_type), FALSE);
     lre_realloc(s->opaque, s->state_stack, 0);

quickjs.c

@@ -47,6 +47,7 @@
 #include "quickjs.h"
 #include "libregexp.h"
 #include "libbf.h"
+#include "xalloca.h"
 
 #if defined(EMSCRIPTEN)
 #define DIRECT_DISPATCH  0
@@ -4870,7 +4871,7 @@ static JSValue js_c_function_data_call(JSContext *ctx, JSValueConst func_obj,
 
     /* XXX: could add the function on the stack for debug */
     if (unlikely(argc < s->length)) {
-        arg_buf = alloca(sizeof(arg_buf[0]) * s->length);
+        arg_buf = xalloca(sizeof(arg_buf[0]) * s->length);
         for(i = 0; i < argc; i++)
             arg_buf[i] = argv[i];
         for(i = argc; i < s->length; i++)
@@ -13993,7 +13994,7 @@ static JSValue js_call_c_function(JSContext *ctx, JSValueConst func_obj,
 
     if (unlikely(argc < arg_count)) {
         /* ensure that at least argc_count arguments are readable */
-        arg_buf = alloca(sizeof(arg_buf[0]) * arg_count);
+        arg_buf = xalloca(sizeof(arg_buf[0]) * arg_count);
         for(i = 0; i < argc; i++)
             arg_buf[i] = argv[i];
         for(i = argc; i < arg_count; i++)
@@ -14104,7 +14105,7 @@ static JSValue js_call_bound_function(JSContext *ctx, JSValueConst func_obj,
     arg_count = bf->argc + argc;
     if (js_check_stack_overflow(ctx->rt, sizeof(JSValue) * arg_count))
         return JS_ThrowStackOverflow(ctx);
-    arg_buf = alloca(sizeof(JSValue) * arg_count);
+    arg_buf = xalloca(sizeof(JSValue) * arg_count);
     for(i = 0; i < bf->argc; i++) {
         arg_buf[i] = bf->argv[i];
     }
@@ -14231,7 +14232,7 @@ static JSValue JS_CallInternal(JSContext *caller_ctx, JSValueConst func_obj,
     init_list_head(&sf->var_ref_list);
     var_refs = p->u.func.var_refs;
 
-    local_buf = alloca(alloca_size);
+    local_buf = xalloca(alloca_size);
     if (unlikely(arg_allocated_size)) {
         int n = min_int(argc, b->arg_count);
         arg_buf = local_buf;