fixup: Ensure buffer allocation for bootstrap

Bootstrap was failing because the vector did not allocate the internal buffer and was holding a null pointer. Commit to fixup is b71fd2a gcc/rust/ChangeLog: * expand/rust-proc-macro.cc (generate_proc_macro_decls_symbol): Resize the vector and initialize it with dummy data before changing it. Signed-off-by: Pierre-Emmanuel Patry <[email protected]>
Rust-GCC · Nov 21, 2023 · 5f0e77a · 5f0e77a
1 parent 1a758c3
commit 5f0e77a
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/gcc/rust/expand/rust-proc-macro.cc b/gcc/rust/expand/rust-proc-macro.cc
@@ -183,7 +183,8 @@ generate_proc_macro_decls_symbol (std::uint32_t stable_crate_id)
   // Size could be hardcoded since we know the input size but I elected to
   // calculate it everytime so we won't have any desync between code and data.
   int size = std::snprintf (nullptr, 0, PROC_MACRO_DECLS_FMT_ARGS);
-  std::vector<char> buf (size + 1);
+  std::vector<char> buf;
+  buf.resize (size + 1, '\0');
   std::sprintf (buf.data (), PROC_MACRO_DECLS_FMT_ARGS);
 #undef PROC_MACRO_DECLS_FMT_ARGS