fix: prevent bad argument pop back when querying toolchain (#342)

Myriad-Dreamin · web-flow · commit 53689f225685 · 2026-01-10T22:43:47.000+08:00
diff --git a/src/Compiler/Command.cpp b/src/Compiler/Command.cpp
@@ -730,7 +730,11 @@ CompilationContext CompilationDatabase::lookup(llvm::StringRef file,
             }
         }
 
-        arguments.pop_back();
+        if(arguments.empty()) {
+            LOG_WARN("failed to query toolchain: {}", file);
+        } else {
+            arguments.pop_back();
+        }
     }
 
     arguments.emplace_back(file.data());

Original file line number	Diff line number	Diff line change
`@@ -730,7 +730,11 @@ CompilationContext CompilationDatabase::lookup(llvm::StringRef file,`
`730`	`730`	`}`
`731`	`731`	`}`
`732`	`732`
`733`		`- arguments.pop_back();`
	`733`	`+ if(arguments.empty()) {`
	`734`	`+ LOG_WARN("failed to query toolchain: {}", file);`
	`735`	`+ } else {`
	`736`	`+ arguments.pop_back();`
	`737`	`+ }`
`734`	`738`	`}`
`735`	`739`
`736`	`740`	`arguments.emplace_back(file.data());`