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From 3539a72c260063713e4ecba17966ba9a768d8af9 Mon Sep 17 00:00:00 2001
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From: Lennart Poettering <lennart@poettering.net>
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Date: Wed, 16 Jan 2019 00:13:38 +0100
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Subject: [PATCH] strv: rework FOREACH_STRING() macro
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So it's apparently problematic that we use STRV_MAKE() (i.e. a compound
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initializer) outside of the {} block we use it in (and that includes
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outside of the ({}) block, too). Hence, let's rework the macro to not
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need that.
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This also makes the macro shorter, which is definitely a good and more
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readable. Moreover, it will now complain if the iterator is a "char*"
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instead of a "const char*", which is good too.
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Fixes: #11394
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(cherry picked from commit 66a64081f82dfad90f2f9394a477820a2e3e6510)
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Related: #2017033
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---
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src/basic/strv.h | 15 ++++-----------
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1 file changed, 4 insertions(+), 11 deletions(-)
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diff --git a/src/basic/strv.h b/src/basic/strv.h
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index c1e4c973b6..a09d76706d 100644
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--- a/src/basic/strv.h
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+++ b/src/basic/strv.h
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@@ -148,17 +148,10 @@ void strv_print(char **l);
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_found; \
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})
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-#define FOREACH_STRING(x, ...) \
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- for (char **_l = ({ \
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- char **_ll = STRV_MAKE(__VA_ARGS__); \
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- x = _ll ? _ll[0] : NULL; \
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- _ll; \
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- }); \
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- _l && *_l; \
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- x = ({ \
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- _l ++; \
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- _l[0]; \
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- }))
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+#define FOREACH_STRING(x, y, ...) \
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+ for (char **_l = STRV_MAKE(({ x = y; }), ##__VA_ARGS__); \
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+ x; \
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+ x = *(++_l))
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char **strv_reverse(char **l);
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char **strv_shell_escape(char **l, const char *bad);
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