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Linux: improve tryRead macro safety

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Add an explicit else clause so a following else branch for a prior if
condition does not get mixed up.

Also force a trailing semicolon and thereby silence current
-Wextra-semi-stmt warnings.

Improve readability of the hwloc_bitmap_foreach_begin loop macro.
This commit is contained in:
Christian Göttsche 2021-08-14 11:21:54 +02:00 committed by BenBE
parent ae1816e563
commit 970885edc3
2 changed files with 4 additions and 3 deletions
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1
configure.ac
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@ -668,6 +668,7 @@ AS_VAR_IF(CACHEVAR,yes,
AS_VAR_POPDEF([CACHEVAR])dnl
])dnl AX_CHECK_COMPILE_FLAGS
AX_CHECK_COMPILE_FLAG([-Wextra-semi-stmt], [AM_CFLAGS="$AM_CFLAGS -Wextra-semi-stmt"], , [-Werror=unknown-warning-option]) dnl the autoconf check itself generates -Wextra-semi-stmt
AX_CHECK_COMPILE_FLAG([-Wimplicit-int-conversion], [AM_CFLAGS="$AM_CFLAGS -Wimplicit-int-conversion"], , [-Werror])
AX_CHECK_COMPILE_FLAG([-Wnull-dereference], [AM_CFLAGS="$AM_CFLAGS -Wnull-dereference"], , [-Werror])

6
linux/LinuxProcessList.c
View File

@ -1609,7 +1609,7 @@ static inline void LinuxProcessList_scanMemoryInfo(ProcessList* this) {
(variable) = parsed_; \
} \
break; \
}
} else (void) 0 /* Require a ";" after the macro use. */
switch (buffer[0]) {
case 'M':
@ -1785,12 +1785,12 @@ static inline void LinuxProcessList_scanZfsArcstats(LinuxProcessList* lpl) {
if (String_startsWith(buffer, label)) { \
sscanf(buffer + strlen(label), " %*2u %32llu", variable); \
break; \
}
} else (void) 0 /* Require a ";" after the macro use. */
#define tryReadFlag(label, variable, flag) \
if (String_startsWith(buffer, label)) { \
(flag) = sscanf(buffer + strlen(label), " %*2u %32llu", variable); \
break; \
}
} else (void) 0 /* Require a ";" after the macro use. */
switch (buffer[0]) {
case 'c':