fix: Avoid crash for -arch as last compiler option

The bug has been present since 89aa39f394e0fa4935e6cadd7184e372a37f9506
(ccache 3.3).

Fixes #1377.

(cherry picked from commit 432e1f5178631aec14a76f8be82c7e090c45bc69)

diff --git a/src/argprocessing.cpp b/src/argprocessing.cpp
index 93046e13a9b00c8b5441ed421b1c39338f8fbcd0..22f135723d4ef43504d03adbb3563b3dcceaf725 100644 (file)
--- a/src/argprocessing.cpp
+++ b/src/argprocessing.cpp
@@ -426,6 +426,10 @@ process_option_arg(const Context& ctx,
 
   // Handle -arch options.
   if (arg == "-arch") {
+    if (i == args.size() - 1) {
+      LOG("Missing argument to {}", args[i]);
+      return Statistic::bad_compiler_arguments;
+    }
     ++i;
     args_info.arch_args.emplace_back(args[i]);
     if (args_info.arch_args.size() == 2) {