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https://gitlab.freedesktop.org/pipewire/pipewire/-/commit/d3ea3142e1a4de206e616bc18f63a529e6b4986a.patch
https://bugs.gentoo.org/838427

From: psykose <alice@ayaya.dev>
Date: Wed, 13 Apr 2022 21:57:49 +0000
Subject: [PATCH] spa: fix c90 header include

placing declarations after code is invalid under ISO c90

Fixes !1211
--- a/spa/include/spa/utils/string.h
+++ b/spa/include/spa/utils/string.h
@@ -276,10 +276,11 @@ static inline int spa_scnprintf(char *buffer, size_t size, const char *format, .
 static inline float spa_strtof(const char *str, char **endptr)
 {
 	static locale_t locale = NULL;
+	locale_t prev;
 	float v;
 	if (SPA_UNLIKELY(locale == NULL))
 		locale = newlocale(LC_ALL_MASK, "C", NULL);
-	locale_t prev = uselocale(locale);
+	prev = uselocale(locale);
 	v = strtof(str, endptr);
 	uselocale(prev);
 	return v;
@@ -319,10 +320,11 @@ static inline bool spa_atof(const char *str, float *val)
 static inline double spa_strtod(const char *str, char **endptr)
 {
 	static locale_t locale = NULL;
+	locale_t prev;
 	double v;
 	if (SPA_UNLIKELY(locale == NULL))
 		locale = newlocale(LC_ALL_MASK, "C", NULL);
-	locale_t prev = uselocale(locale);
+	prev = uselocale(locale);
 	v = strtod(str, endptr);
 	uselocale(prev);
 	return v;
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