[llvm-branch-commits] [flang] release/20.x: flang: Fix build with latest libc++ (#127362) (PR #127805)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-flang-runtime

Author: None (llvmbot)

<details>
<summary>Changes</summary>

Backport 2b340c10a611d929fee25e6222909c8915e3d6b6

Requested by: @<!-- -->tstellar

---
Full diff: https://github.com/llvm/llvm-project/pull/127805.diff


1 Files Affected:

- (modified) flang/runtime/io-api-minimal.cpp (+2-1) 


``````````diff
diff --git a/flang/runtime/io-api-minimal.cpp b/flang/runtime/io-api-minimal.cpp
index 68768427be0c2..93ac82248aa4c 100644
--- a/flang/runtime/io-api-minimal.cpp
+++ b/flang/runtime/io-api-minimal.cpp
@@ -150,7 +150,8 @@ bool IODEF(OutputLogical)(Cookie cookie, bool truth) {
 // Provide own definition for `std::__libcpp_verbose_abort` to avoid dependency
 // on the version provided by libc++.
 
-void std::__libcpp_verbose_abort(char const *format, ...) {
+void std::__libcpp_verbose_abort(char const *format, ...) noexcept(
+    noexcept(std::__libcpp_verbose_abort(""))) {
   va_list list;
   va_start(list, format);
   std::vfprintf(stderr, format, list);

``````````

</details>


https://github.com/llvm/llvm-project/pull/127805