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logging: Duplicate only strings from rw memory

If argument for log_strdup is from ro memory then there is
no point to duplicate it. This may happen if function logs
variables coming from outside, e.g. function argument.

Signed-off-by: Krzysztof Chruscinski <>
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nordic-krch authored and nashif committed Jun 7, 2019
1 parent 9f7c2b6 commit 960041bfa5bc42147309af0745097fdd4af11e54
Showing with 1 addition and 1 deletion.
  1. +1 −1 subsys/logging/log_core.c
@@ -753,7 +753,7 @@ char *log_strdup(const char *str)
struct log_strdup_buf *dup;
int err;

if (IS_ENABLED(CONFIG_LOG_IMMEDIATE) || is_rodata(str)) {
return (char *)str;

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