fix: avoid integer underflow on get context start line

mya-project · Jan 16, 2025 · 70fd9a8 · 70fd9a8
1 parent 02941cb
commit 70fd9a8
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/error_handling.c b/src/error_handling.c
@@ -5,6 +5,7 @@
 #include "module.h"
 
 
+#define MIN(a, b)  (a < b ? a : b)
 #define LBUFF_SIZE 127
 
 
@@ -23,7 +24,7 @@ _error_remove_line(module_t* module);
 void
 error_module_ctx(module_t* module, unsigned int line, unsigned int column, unsigned int length, const char* message)
 {
-  unsigned int ctx_start_line = line - ERR_CTX_SIZE;
+  unsigned int ctx_start_line = MIN(line - ERR_CTX_SIZE, 0);
   unsigned int ctx_end_line = line + ERR_CTX_SIZE;
   unsigned int current_line = 0;