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logging: Fix log_strdup detection on non-standard messages

Detection of missing log_strdup call was applied to every message
while it applies only to standard messages (string + arguments).
Appling it to hexdump messages could lead to fault as seen on
nrf9160_pca10090ns board.

Signed-off-by: Krzysztof Chruscinski <>
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nordic-krch authored and nashif committed Jun 10, 2019
1 parent 6331dae commit aabe964b98493c088eb399cb5801ec89dc1e200e
Showing with 10 additions and 3 deletions.
  1. +10 −3 subsys/logging/log_core.c
@@ -151,7 +151,7 @@ static bool is_rodata(const void *addr)

* @brief Scan string arguments and report evert address which is not in read
* @brief Scan string arguments and report every address which is not in read
* only memory and not yet duplicated.
* @param msg Log message.
@@ -161,8 +161,15 @@ static void detect_missed_strdup(struct log_msg *msg)
#define ERR_MSG "argument %d in log message \"%s\" missing log_strdup()."
u32_t idx;
const char *str;
const char *msg_str = log_msg_str_get(msg);
u32_t mask = count_s(msg_str, log_msg_nargs_get(msg));
const char *msg_str;
u32_t mask;

if (!log_msg_is_std(msg)) {

msg_str = log_msg_str_get(msg);
mask = count_s(msg_str, log_msg_nargs_get(msg));

while (mask) {
idx = 31 - __builtin_clz(mask);

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