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53 lines
1.7 KiB
Diff
53 lines
1.7 KiB
Diff
From 31d360646d7c1866a6ca1ee4b452b2c19940d028 Mon Sep 17 00:00:00 2001
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From: Mike Gilbert <floppym@gentoo.org>
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Date: Wed, 15 Oct 2025 14:26:43 -0400
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Subject: [PATCH] Check for fpurge declaration
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musl libc defines fpurge, but does not declare it in stdio.h.
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It seems to be unnecessary to call fpurge on musl.
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Bug: https://bugs.gentoo.org/963567
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---
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Src/utils.c | 2 +-
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configure.ac | 5 ++++-
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2 files changed, 5 insertions(+), 2 deletions(-)
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diff --git a/Src/utils.c b/Src/utils.c
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index 4ea7b8e93..5e41b712b 100644
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--- a/Src/utils.c
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+++ b/Src/utils.c
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@@ -2022,7 +2022,7 @@ redup(int x, int y)
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{
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int ret = y;
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-#ifdef HAVE_FPURGE
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+#if HAVE_DECL_FPURGE
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/* Make sure buffers are cleared when changing descriptor for a
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* FILE object. No fflush() here because the only way anything
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* can legitimately be left in the buffer is when an error has
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diff --git a/configure.ac b/configure.ac
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index 13895bb1d..1f035bc0d 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -1250,7 +1250,7 @@ AC_CHECK_FUNCS(strftime strptime mktime timelocal \
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select poll \
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readlink faccessx fchdir ftruncate \
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fstat lstat lchown fchown fchmod \
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- fpurge fseeko ftello \
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+ fseeko ftello \
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mkfifo _mktemp mkstemp \
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waitpid wait3 \
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sigqueue \
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@@ -1292,6 +1292,9 @@ AC_CHECK_FUNCS(strftime strptime mktime timelocal \
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setutxent getutxent endutxent getutent)
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AC_FUNC_STRCOLL
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+# fpurge exists on musl, but is undeclared in stdio.h and isn't actually required
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+AC_CHECK_DECLS([fpurge])
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+
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# isinf() and isnan() can exist as either functions or macros.
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AH_TEMPLATE([HAVE_ISINF],
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[Define to 1 if you have the `isinf' macro or function.])
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--
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2.51.0
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