Backport https://github.com/flyinghead/flycast/commit/092ee6d8a5c173ac08cde603c94d70c848585fc8

core/hw/pvr/ta_ctx.cpp

@@ -210,7 +210,7 @@ TA_context* tactx_Alloc(void)
 	TA_context* rv = 0;
 
    mtx_pool.Lock();
-	if (ctx_pool.size())
+	if (!ctx_pool.empty())
 	{
 		rv = ctx_pool[ctx_pool.size()-1];
 		ctx_pool.pop_back();

core/hw/sh4/dyna/ssa_regalloc.h

@@ -244,7 +244,7 @@ public:
 	}
 
 	void Cleanup() {
-		verify(final_opend || block->oplist.size() == 0);
+		verify(final_opend || block->oplist.empty());
 		final_opend = false;
 		FlushAllRegs(true);
 		verify(reg_alloced.empty());

core/rend/gles/gldraw.cpp

@@ -272,7 +272,7 @@ static void SortTriangles(int first, int count)
 	GenSorted(first, count, pidx_sort, vidx_sort);
 
 	//Upload to GPU if needed
-	if (pidx_sort.size())
+	if (!pidx_sort.empty())
 	{
 		//Bind and upload sorted index buffer
 		glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, gl.vbo.idxs2); glCheck();
@@ -295,7 +295,7 @@ static void SortTriangles(int first, int count)
 void DrawSorted(bool multipass)
 {
 	//if any drawing commands, draw them
-	if (pidx_sort.size())
+	if (!pidx_sort.empty())
 	{
 		u32 count=pidx_sort.size();