[Mlir-commits] [mlir] [mlir][capi] Fix non-portable int64_t printf formatting in greedy rewrite config test (PR #175487)

[Alexandre Eberhardt]

https://github.com/alexandreeberhardt created https://github.com/llvm/llvm-project/pull/175487

This PR fixes non-portable `printf` formatting in the GreedyRewriteDriverConfig C-API test.

### Problem
The test prints `int64_t` values using `%ld`. This is not portable on LLP64 platforms (Windows or some MacOS configurations), where `long` is 32-bit, which can truncate values or lead to undefined behavior.

### Fix
- Include `<inttypes.h>`
- Print `int64_t` values using the `PRId64` macro:
  - `%" PRId64 "`

### Testing
- `ninja check-mlir`


>From 8af049dff7dd2c24b3449d972f4cc19bec180ba7 Mon Sep 17 00:00:00 2001
From: alexandre <alexandre.eber07 at gmail.com>
Date: Mon, 12 Jan 2026 00:20:22 -0500
Subject: [PATCH] [mlir][capi] Fix non-portable int64_t printf formatting in
 greedy rewrite config test

The C-API test prints int64_t values using %ld, which is not portable on LLP64
platforms (Windows or some MacOS configurations) where long is 32-bit. Use <inttypes.h> and PRId64 to
print int64_t portably.

Test: ninja check-mlir
---
 mlir/test/CAPI/rewrite.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/mlir/test/CAPI/rewrite.c b/mlir/test/CAPI/rewrite.c
index 0745eb496c1d7..5795646be544f 100644
--- a/mlir/test/CAPI/rewrite.c
+++ b/mlir/test/CAPI/rewrite.c
@@ -14,8 +14,10 @@
 #include "mlir-c/IR.h"
 
 #include <assert.h>
+#include <inttypes.h>
 #include <stdio.h>
 
+
 MlirOperation createOperationWithName(MlirContext ctx, const char *name) {
   MlirStringRef nameRef = mlirStringRefCreateFromCString(name);
   MlirLocation loc = mlirLocationUnknownGet(ctx);
@@ -554,10 +556,10 @@ void testGreedyRewriteDriverConfig(MlirContext ctx) {
 
   // Test all configuration getters and verify values
   // CHECK: MaxIterations: 5
-  fprintf(stderr, "MaxIterations: %ld\n",
+  fprintf(stderr, "MaxIterations: %" PRId64 "\n",
           mlirGreedyRewriteDriverConfigGetMaxIterations(config));
   // CHECK: MaxNumRewrites: 100
-  fprintf(stderr, "MaxNumRewrites: %ld\n",
+  fprintf(stderr, "MaxNumRewrites: %" PRId64 "\n",
           mlirGreedyRewriteDriverConfigGetMaxNumRewrites(config));
   // CHECK: UseTopDownTraversal: 1
   fprintf(stderr, "UseTopDownTraversal: %d\n",