tests : Fix compilation warnings (Linux/GCC) (#2451)

* fix hellaswag print format, cast away warning in test-double-float

* c++11 cannot use designated initializers

* add static to test-grad0.c internal functions

* use memcpy in test-double-float.c

* port c tests to c++

* use initializer list for ggml_init_params

7 files changed, 40 insertions, 37 deletions

diff --git a/Makefile b/Makefile
index 100614b..a692a39 100644
--- a/Makefile
+++ b/Makefile
@@ -411,13 +411,13 @@ benchmark-matmult: examples/benchmark/benchmark-matmult.cpp build-info.h ggml.o
 vdot: pocs/vdot/vdot.cpp ggml.o $(OBJS)
 	$(CXX) $(CXXFLAGS) $^ -o $@ $(LDFLAGS)
 
-tests/test-double-float: tests/test-double-float.c build-info.h ggml.o llama.o common.o $(OBJS)
+tests/test-double-float: tests/test-double-float.cpp build-info.h ggml.o llama.o common.o $(OBJS)
 	$(CXX) $(CXXFLAGS) $(filter-out %.txt,$^) -o $@ $(LDFLAGS)
 
-tests/test-grad0: tests/test-grad0.c build-info.h ggml.o llama.o common.o $(OBJS)
+tests/test-grad0: tests/test-grad0.cpp build-info.h ggml.o llama.o common.o $(OBJS)
 	$(CXX) $(CXXFLAGS) $(filter-out %.txt,$^) -o $@ $(LDFLAGS)
 
-tests/test-opt: tests/test-opt.c build-info.h ggml.o llama.o common.o $(OBJS)
+tests/test-opt: tests/test-opt.cpp build-info.h ggml.o llama.o common.o $(OBJS)
 	$(CXX) $(CXXFLAGS) $(filter-out %.txt,$^) -o $@ $(LDFLAGS)
 
 tests/test-quantize-fns: tests/test-quantize-fns.cpp build-info.h ggml.o llama.o common.o $(OBJS)
diff --git a/examples/common.cpp b/examples/common.cpp
index e643984..3e7c3b6 100644
--- a/examples/common.cpp
+++ b/examples/common.cpp
@@ -572,7 +572,7 @@ void gpt_print_usage(int /*argc*/, char ** argv, const gpt_params & params) {
     fprintf(stdout, "  --temp N              temperature (default: %.1f)\n", (double)params.temp);
     fprintf(stdout, "  --perplexity          compute perplexity over each ctx window of the prompt\n");
     fprintf(stdout, "  --hellaswag           compute HellaSwag score over random tasks from datafile supplied with -f\n");
-    fprintf(stdout, "  --hellaswag-tasks N   number of tasks to use when computing the HellaSwag score (default: %d)\n", params.hellaswag_tasks);
+    fprintf(stdout, "  --hellaswag-tasks N   number of tasks to use when computing the HellaSwag score (default: %zu)\n", params.hellaswag_tasks);
     fprintf(stdout, "  --keep N              number of tokens to keep from the initial prompt (default: %d, -1 = all)\n", params.n_keep);
     fprintf(stdout, "  --chunks N            max number of chunks to process (default: %d, -1 = all)\n", params.n_chunks);
     if (llama_mlock_supported()) {
diff --git a/scripts/sync-ggml.sh b/scripts/sync-ggml.sh
index 02ea6ec..3d13e85 100755
--- a/scripts/sync-ggml.sh
+++ b/scripts/sync-ggml.sh
@@ -10,5 +10,5 @@ cp -rpv ../ggml/src/ggml-metal.m     ./ggml-metal.m
 cp -rpv ../ggml/src/ggml-metal.metal ./ggml-metal.metal
 cp -rpv ../ggml/include/ggml/ggml.h  ./ggml.h
 
-cp -rpv ../ggml/tests/test-opt.c    ./tests/test-opt.c
-cp -rpv ../ggml/tests/test-grad0.c  ./tests/test-grad0.c
+cp -rpv ../ggml/tests/test-opt.cpp    ./tests/test-opt.cpp
+cp -rpv ../ggml/tests/test-grad0.cpp  ./tests/test-grad0.cpp
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 11ec6c7..1a40edb 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -6,10 +6,10 @@ function(llama_add_test source)
     add_test(NAME ${TEST_TARGET} COMMAND $<TARGET_FILE:${TEST_TARGET}> ${ARGN})
 endfunction()
 
-# llama_add_test(test-double-float.c) # SLOW
+# llama_add_test(test-double-float.cpp) # SLOW
 llama_add_test(test-quantize-fns.cpp)
 llama_add_test(test-quantize-perf.cpp)
 llama_add_test(test-sampling.cpp)
 llama_add_test(test-tokenizer-0.cpp ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab.bin)
-llama_add_test(test-grad0.c) # SLOW
-# llama_add_test(test-opt.c) # SLOW
+llama_add_test(test-grad0.cpp) # SLOW
+# llama_add_test(test-opt.cpp) # SLOW
diff --git a/tests/test-double-float.c b/tests/test-double-float.cpp
index 89dafc9..b506f27 100644
--- a/tests/test-double-float.c
+++ b/tests/test-double-float.cpp
@@ -3,10 +3,11 @@
 // This is done by checking all finite (non-NaN, non-infinite) floats.
 
 #undef NDEBUG
-#include <assert.h>
+#include <cassert>
 #include <immintrin.h>
-#include <math.h>
-#include <stdint.h>
+#include <cmath>
+#include <cstdint>
+#include <cstring>
 
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wdouble-promotion"
@@ -32,8 +33,9 @@ inline static float silu_float(float x) {
 int main(void) {
     uint32_t x = UINT32_MAX;
     do {
-        float f = *(float *)&x;
-        assert(!isfinite(f) || (round_orig(f) == round_float(f)));
+        float f;
+        memcpy(&f, &x, sizeof(x));
+        assert(!std::isfinite(f) || (round_orig(f) == round_float(f)));
     } while (x--);
 
 #ifdef __F16C__
diff --git a/tests/test-grad0.c b/tests/test-grad0.cpp
index 6d31221..75a698d 100644
--- a/tests/test-grad0.c
+++ b/tests/test-grad0.cpp
@@ -1,10 +1,10 @@
 #define _CRT_SECURE_NO_DEPRECATE // Disables ridiculous "unsafe" warnigns on Windows
 #include "ggml.h"
 
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <assert.h>
+#include <cmath>
+#include <cstdio>
+#include <cstdlib>
+#include <cassert>
 
 #if defined(_MSC_VER)
 #pragma warning(disable: 4244 4267) // possible loss of data
@@ -47,16 +47,16 @@
 
 #define GGML_PRINT(...) printf(__VA_ARGS__)
 
-float frand(void) {
+static float frand(void) {
     return (float)rand()/(float)RAND_MAX;
 }
 
-int irand(int n) {
+static int irand(int n) {
     if (n == 0) return 0;
     return rand()%n;
 }
 
-void get_random_dims(int64_t * dims, int ndims) {
+static void get_random_dims(int64_t * dims, int ndims) {
     dims[0] = dims[1] = dims[2] = dims[3] = 1;
 
     for (int i = 0; i < ndims; i++) {
@@ -64,7 +64,7 @@ void get_random_dims(int64_t * dims, int ndims) {
     }
 }
 
-struct ggml_tensor * get_random_tensor_f32(
+static struct ggml_tensor * get_random_tensor_f32(
         struct ggml_context * ctx0,
         int ndims,
         int64_t ne[],
@@ -112,7 +112,7 @@ struct ggml_tensor * get_random_tensor_f32(
     return result;
 }
 
-struct ggml_tensor * get_random_tensor_f16(
+static struct ggml_tensor * get_random_tensor_f16(
         struct ggml_context * ctx0,
         int ndims,
         int64_t ne[],
@@ -160,7 +160,7 @@ struct ggml_tensor * get_random_tensor_f16(
     return result;
 }
 
-struct ggml_tensor * get_random_tensor_i32(
+static struct ggml_tensor * get_random_tensor_i32(
         struct ggml_context * ctx0,
         int ndims,
         int64_t ne[],
@@ -208,7 +208,7 @@ struct ggml_tensor * get_random_tensor_i32(
     return result;
 }
 
-void print_elements(const char* label, const struct ggml_tensor * t) {
+static void print_elements(const char* label, const struct ggml_tensor * t) {
     if (!t) {
         printf("%s: %s = null\n", __func__, label);
         return;
@@ -228,7 +228,7 @@ void print_elements(const char* label, const struct ggml_tensor * t) {
 
 }
 
-bool check_gradient(
+static bool check_gradient(
         const char * op_name,
         struct ggml_context * ctx0,
         struct ggml_tensor * x[],
@@ -310,7 +310,7 @@ bool check_gradient(
 }
 
 // TODO: clean-up this ..
-bool check_mat_mul(
+static bool check_mat_mul(
         const struct ggml_tensor * y,
         const struct ggml_tensor * x0,
         const struct ggml_tensor * x1) {
@@ -373,9 +373,9 @@ bool check_mat_mul(
 
 int main(int argc, const char ** argv) {
     struct ggml_init_params params = {
-        .mem_size   = 128*1024*1024,
-        .mem_buffer = NULL,
-        .no_alloc   = false,
+        /* .mem_size   = */ 128*1024*1024,
+        /* .mem_buffer = */ NULL,
+        /* .no_alloc   = */ false,
     };
 
     int64_t ne[4];
diff --git a/tests/test-opt.c b/tests/test-opt.cpp
index 4eef62b..8ab2402 100644
--- a/tests/test-opt.c
+++ b/tests/test-opt.cpp
@@ -1,9 +1,9 @@
 #include "ggml.h"
 
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <assert.h>
+#include <cmath>
+#include <cstdio>
+#include <cstdlib>
+#include <cassert>
 
 #define MAX_NARGS 2
 
@@ -119,10 +119,11 @@ void set_element(struct ggml_tensor * t, int idx, float value) {
 
 int main(void) {
     struct ggml_init_params params = {
-        .mem_size   = 1024*1024*1024,
-        .mem_buffer = NULL,
-        .no_alloc   = false,
+        /* .mem_size   = */ 1024*1024*1024,
+        /* .mem_buffer = */ NULL,
+        /* .no_alloc   = */ false,
     };
+
     struct ggml_context * ctx = ggml_init(params);
 
     int64_t ne1[4] = {4, 128, 1, 1};