109 lines
4.5 KiB
Diff
109 lines
4.5 KiB
Diff
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wtf, code with undefined behavior.
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SPIRV/SpvBuilder.cpp:701:39: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
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unsigned value = *(unsigned int*)&f;
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SPIRV/SpvBuilder.cpp:724:55: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
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unsigned long long value = *(unsigned long long*)&d;
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glslang/MachineIndependent/Constant.cpp:51:31: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
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int bitPatternL = *(int*)&x;
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glslang/MachineIndependent/Constant.cpp:60:31: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
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int bitPatternL = *(int*)&x;
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And pointless compile timestamps.
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glslang-devel.x86_64: W: file-contains-date-and-time /usr/bin/spirv-remap
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Your file uses __DATE and __TIME__ this causes the package to rebuild when
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---
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SPIRV/SpvBuilder.cpp | 9 +++++++--
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StandAlone/spirv-remap.cpp | 2 +-
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glslang/MachineIndependent/Constant.cpp | 15 +++++++++++----
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3 files changed, 19 insertions(+), 7 deletions(-)
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Index: glslang-2.3.g244/SPIRV/SpvBuilder.cpp
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===================================================================
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--- glslang-2.3.g244.orig/SPIRV/SpvBuilder.cpp
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+++ glslang-2.3.g244/SPIRV/SpvBuilder.cpp
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@@ -53,6 +53,7 @@
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#ifndef _WIN32
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#include <cstdio>
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#endif
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+#include <cstring>
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namespace spv {
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@@ -698,7 +699,9 @@ Id Builder::makeFloatConstant(float f, b
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{
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Op opcode = specConstant ? OpSpecConstant : OpConstant;
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Id typeId = makeFloatType(32);
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- unsigned value = *(unsigned int*)&f;
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+ unsigned value;
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+ static_assert(sizeof(value) <= sizeof(float), "horrible code");
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+ memcpy(&value, &f, sizeof(value));
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// See if we already made it. Applies only to regular constants, because specialization constants
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// must remain distinct for the purpose of applying a SpecId decoration.
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@@ -721,7 +724,9 @@ Id Builder::makeDoubleConstant(double d,
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{
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Op opcode = specConstant ? OpSpecConstant : OpConstant;
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Id typeId = makeFloatType(64);
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- unsigned long long value = *(unsigned long long*)&d;
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+ unsigned long long value;
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+ static_assert(sizeof(value) <= sizeof(d), "horrible code");
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+ memcpy(&value, &d, sizeof(value));
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unsigned op1 = value & 0xFFFFFFFF;
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unsigned op2 = value >> 32;
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Index: glslang-2.3.g244/StandAlone/spirv-remap.cpp
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===================================================================
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--- glslang-2.3.g244.orig/StandAlone/spirv-remap.cpp
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+++ glslang-2.3.g244/StandAlone/spirv-remap.cpp
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@@ -225,7 +225,7 @@ namespace {
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}
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}
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else if (arg == "--version" || arg == "-V") {
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- std::cout << basename(argv[0]) << " version 0.97 " << __DATE__ << " " << __TIME__ << std::endl;
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+ std::cout << basename(argv[0]) << " version 0.97 " << "__DATE__" << " " << "__TIME__" << std::endl;
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exit(0);
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} else if (arg == "--input" || arg == "-i") {
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// Collect input files
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Index: glslang-2.3.g244/glslang/MachineIndependent/Constant.cpp
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===================================================================
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--- glslang-2.3.g244.orig/glslang/MachineIndependent/Constant.cpp
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+++ glslang-2.3.g244/glslang/MachineIndependent/Constant.cpp
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@@ -38,6 +38,7 @@
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#include <cmath>
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#include <cfloat>
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#include <cstdlib>
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+#include <cstring>
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namespace {
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@@ -48,8 +49,11 @@ using namespace glslang;
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bool isNan(double x)
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{
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// tough to find a platform independent library function, do it directly
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- int bitPatternL = *(int*)&x;
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- int bitPatternH = *((int*)&x + 1);
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+ int bitPatternL;
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+ static_assert(sizeof(int[2]) <= sizeof(x), "horrible code");
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+ memcpy(&bitPatternL, &x, sizeof(bitPatternL));
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+ int bitPatternH;
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+ memcpy(&bitPatternH, reinterpret_cast<int *>(&x) + 1, sizeof(bitPatternH));
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return (bitPatternH & 0x7ff80000) == 0x7ff80000 &&
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((bitPatternH & 0xFFFFF) != 0 || bitPatternL != 0);
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}
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@@ -57,8 +61,11 @@ bool isNan(double x)
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bool isInf(double x)
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{
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// tough to find a platform independent library function, do it directly
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- int bitPatternL = *(int*)&x;
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- int bitPatternH = *((int*)&x + 1);
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+ int bitPatternL;
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+ static_assert(sizeof(int[2]) <= sizeof(x), "horrible code");
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+ memcpy(&bitPatternL, &x, sizeof(bitPatternL));
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+ int bitPatternH;
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+ memcpy(&bitPatternH, reinterpret_cast<int *>(&x) + 1, sizeof(bitPatternH));
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return (bitPatternH & 0x7ff00000) == 0x7ff00000 &&
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(bitPatternH & 0xFFFFF) == 0 && bitPatternL == 0;
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}
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