gentoo/dev-java/openjdk/files/openjdk-8.472_p08-fixBuild_failure_with_glibc-2.42.patch

From nicoslocalrepo Mon Sep 17 00:00:00 2001
From: Nico Roeser
Date: Sat, 13 Sep 2025 13:23:33 +0200
Subject: [PATCH] Backport fix for C2Y uabs() naming collision

Make the code build with glibc 2.42 or later, which include an
implementation of uabs (for C2Y).

Original patch:
8354941: Build failure with glibc 2.42 due to uabs() name collision

Backport-of: 38bb8adf4f632b08af15f2d8530b35f05f86a020
---
 hotspot/src/cpu/aarch64/vm/assembler_aarch64.cpp      | 2 +-
 hotspot/src/cpu/aarch64/vm/assembler_aarch64.hpp      | 2 +-
 hotspot/src/cpu/aarch64/vm/macroAssembler_aarch64.cpp | 2 +-
 hotspot/src/cpu/aarch64/vm/stubGenerator_aarch64.cpp  | 4 ++--
 hotspot/src/share/vm/opto/mulnode.cpp                 | 4 ++--
 hotspot/src/share/vm/utilities/globalDefinitions.hpp  | 8 ++++----
 6 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/hotspot/src/cpu/aarch64/vm/assembler_aarch64.cpp b/hotspot/src/cpu/aarch64/vm/assembler_aarch64.cpp
--- a/hotspot/src/cpu/aarch64/vm/assembler_aarch64.cpp
+++ b/hotspot/src/cpu/aarch64/vm/assembler_aarch64.cpp
@@ -1445,7 +1445,7 @@ void Assembler::add_sub_immediate(Register Rd, Register Rn, unsigned uimm, int o
 
 bool Assembler::operand_valid_for_add_sub_immediate(long imm) {
   bool shift = false;
-  unsigned long uimm = uabs(imm);
+  unsigned long uimm = g_uabs(imm);
   if (uimm < (1 << 12))
     return true;
   if (uimm < (1 << 24)
diff --git a/hotspot/src/cpu/aarch64/vm/assembler_aarch64.hpp b/hotspot/src/cpu/aarch64/vm/assembler_aarch64.hpp
--- a/hotspot/src/cpu/aarch64/vm/assembler_aarch64.hpp
+++ b/hotspot/src/cpu/aarch64/vm/assembler_aarch64.hpp
@@ -825,7 +825,7 @@ public:
   static const unsigned long branch_range = NOT_DEBUG(128 * M) DEBUG_ONLY(2 * M);
 
   static bool reachable_from_branch_at(address branch, address target) {
-    return uabs(target - branch) < branch_range;
+    return g_uabs(target - branch) < branch_range;
   }
 
   // Unconditional branch (immediate)
diff --git a/hotspot/src/cpu/aarch64/vm/macroAssembler_aarch64.cpp b/hotspot/src/cpu/aarch64/vm/macroAssembler_aarch64.cpp
--- a/hotspot/src/cpu/aarch64/vm/macroAssembler_aarch64.cpp
+++ b/hotspot/src/cpu/aarch64/vm/macroAssembler_aarch64.cpp
@@ -2023,7 +2023,7 @@ void MacroAssembler::wrap_add_sub_imm_insn(Register Rd, Register Rn, unsigned im
   if (operand_valid_for_add_sub_immediate((int)imm)) {
     (this->*insn1)(Rd, Rn, imm);
   } else {
-    if (uabs(imm) < (1 << 24)) {
+    if (g_uabs(imm) < (1 << 24)) {
        (this->*insn1)(Rd, Rn, imm & -(1 << 12));
        (this->*insn1)(Rd, Rd, imm & ((1 << 12)-1));
     } else {
diff --git a/hotspot/src/cpu/aarch64/vm/stubGenerator_aarch64.cpp b/hotspot/src/cpu/aarch64/vm/stubGenerator_aarch64.cpp
--- a/hotspot/src/cpu/aarch64/vm/stubGenerator_aarch64.cpp
+++ b/hotspot/src/cpu/aarch64/vm/stubGenerator_aarch64.cpp
@@ -1093,7 +1093,7 @@ class StubGenerator: public StubCodeGenerator {
 
   void copy_memory_small(Register s, Register d, Register count, Register tmp, int step) {
     bool is_backwards = step < 0;
-    size_t granularity = uabs(step);
+    size_t granularity = g_uabs(step);
     int direction = is_backwards ? -1 : 1;
     int unit = wordSize * direction;
 
@@ -1149,7 +1149,7 @@ class StubGenerator: public StubCodeGenerator {
                    Register count, Register tmp, int step) {
     copy_direction direction = step < 0 ? copy_backwards : copy_forwards;
     bool is_backwards = step < 0;
-    int granularity = uabs(step);
+    int granularity = g_uabs(step);
     const Register t0 = r3, t1 = r4;
 
     // <= 96 bytes do inline. Direction doesn't matter because we always
diff --git a/hotspot/src/share/vm/opto/mulnode.cpp b/hotspot/src/share/vm/opto/mulnode.cpp
--- a/hotspot/src/share/vm/opto/mulnode.cpp
+++ b/hotspot/src/share/vm/opto/mulnode.cpp
@@ -189,7 +189,7 @@ Node *MulINode::Ideal(PhaseGVN *phase, bool can_reshape) {
   // Check for negative constant; if so negate the final result
   bool sign_flip = false;
 
-  unsigned int abs_con = uabs(con);
+  unsigned int abs_con = g_uabs(con);
   if (abs_con != (unsigned int)con) {
     sign_flip = true;
   }
@@ -285,7 +285,7 @@ Node *MulLNode::Ideal(PhaseGVN *phase, bool can_reshape) {
 
   // Check for negative constant; if so negate the final result
   bool sign_flip = false;
-  julong abs_con = uabs(con);
+  julong abs_con = g_uabs(con);
   if (abs_con != (julong)con) {
     sign_flip = true;
   }
diff --git a/hotspot/src/share/vm/utilities/globalDefinitions.hpp b/hotspot/src/share/vm/utilities/globalDefinitions.hpp
--- a/hotspot/src/share/vm/utilities/globalDefinitions.hpp
+++ b/hotspot/src/share/vm/utilities/globalDefinitions.hpp
@@ -1254,7 +1254,7 @@ inline bool is_even(intx x) { return !is_odd(x); }
 
 // abs methods which cannot overflow and so are well-defined across
 // the entire domain of integer types.
-static inline unsigned int uabs(unsigned int n) {
+static inline unsigned int g_uabs(unsigned int n) {
   union {
     unsigned int result;
     int value;
@@ -1263,7 +1263,7 @@ static inline unsigned int uabs(unsigned int n) {
   if (value < 0) result = 0-result;
   return result;
 }
-static inline julong uabs(julong n) {
+static inline julong g_uabs(julong n) {
   union {
     julong result;
     jlong value;
@@ -1272,8 +1272,8 @@ static inline julong uabs(julong n) {
   if (value < 0) result = 0-result;
   return result;
 }
-static inline julong uabs(jlong n) { return uabs((julong)n); }
-static inline unsigned int uabs(int n) { return uabs((unsigned int)n); }
+static inline julong g_uabs(jlong n) { return g_uabs((julong)n); }
+static inline unsigned int g_uabs(int n) { return g_uabs((unsigned int)n); }
 
 // "to" should be greater than "from."
 inline intx byte_size(void* from, void* to) {
-- 
2.51.0