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40 lines
1.4 KiB
Diff
40 lines
1.4 KiB
Diff
From 9e2c32390c5c253aade3bb703e51841748d2c37e Mon Sep 17 00:00:00 2001
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From: Jonathan Wakely <jwakely@redhat.com>
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Date: Sat, 28 Jan 2017 01:26:00 +0000
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Subject: [PATCH] Remove abs(float) function that clashes with std::abs(float)
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Depending on which C++ standard library headers have been included there
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might an abs(float) function already declared in the global namespace,
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so the definition in this file conflicts with it. This cause a build
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failure with GCC 7, which conforms more closely to the C++ standard with
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respect to overloads of abs.
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Including <cmath> and adding a using-declaration for std::abs ensures
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that the standard std::abs(float) function is available. This solution
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should be portable to all compilers.
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---
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handler.cc | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/handler.cc b/handler.cc
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index 8830ea2..685b1ff 100644
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--- a/handler.cc
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+++ b/handler.cc
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@@ -23,6 +23,8 @@
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#include <X11/extensions/XTest.h>
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#include <X11/XKBlib.h>
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#include <X11/Xproto.h>
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+#include <cmath> // std::abs(float)
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+using std::abs;
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XState *xstate = nullptr;
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@@ -533,8 +535,6 @@ class WaitForPongHandler : public Handler, protected Timeout {
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virtual Grabber::State grab_mode() { return parent->grab_mode(); }
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};
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-static inline float abs(float x) { return x > 0 ? x : -x; }
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-
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class AbstractScrollHandler : public Handler {
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bool have_x, have_y;
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float last_x, last_y;
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