Fixes

Author: spievniev

tests/alt_linked_list.c

@@ -26,7 +26,7 @@ int main(void) {
         if (i % 2 == 0) {
             NodeB *cur = (NodeB *) _cur;
             NodeA *node = (NodeA *) malloc(sizeof(*node));
-            if (node == NULL) return 1;
+            if (node == NULL) return EXIT_FAILURE;
             node->value = i * 2;
             node->next = NULL;
 
@@ -35,7 +35,7 @@ int main(void) {
         } else {
             NodeA *cur = (NodeA *) _cur;
             NodeB *node = (NodeB *) malloc(sizeof(*node));
-            if (node == NULL) return 1;
+            if (node == NULL) return EXIT_FAILURE;
             node->value = i * -1.23;
             node->next = NULL;
 

tests/linked_list.c

@@ -17,7 +17,7 @@ int main(void) {
     Node *cur = &head;
     for (int i = 1; i < NODES; i++) {
         Node *node = (Node *) malloc(sizeof(*node));
-        if (node == NULL) return 1;
+        if (node == NULL) return EXIT_FAILURE;
         node->value = i * 2;
         node->next = NULL;
 

uprintf.h

@@ -76,8 +76,8 @@ extern int _upf_test_status;
 // them to get expanded before stringification.
 #define _upf_stringify_va_args(...) #__VA_ARGS__
 
-// The noop instruction is required to keep the return PC within the scope of the
-// caller function. Otherwise, it might be optimized to return outside of it.
+// The noop instruction is required to prevent tail call optimization
+// and keep the return PC within the scope of the caller function.
 #define uprintf(fmt, ...)                                                                        \
     do {                                                                                         \
         _upf_uprintf(__FILE__, __LINE__, fmt, _upf_stringify_va_args(__VA_ARGS__), __VA_ARGS__); \
@@ -86,7 +86,7 @@ extern int _upf_test_status;
 
 #endif  // UPRINTF_H
 
-// ====================== SOURCE ==========================
+// ================== IMPLEMENTATION ======================
 
 #ifdef UPRINTF_IMPLEMENTATION
 
@@ -4458,7 +4458,7 @@ __attribute__((noinline)) void _upf_uprintf(const char *file_path, int line, con
     ptrdiff_t pc = pc_ptr - _upf_state.base;
 
     _upf_state.current_cu = _upf_find_cu(pc);
-    _UPF_ASSERT(_upf_state.current_cu != NULL);
+    if (_upf_state.current_cu == NULL) _UPF_ERROR("Failed to find the current compilation unit.");
 
     _upf_state.current_scopes.length = 0;
     _upf_find_scopes(pc, &_upf_state.current_cu->scope, &_upf_state.current_scopes);