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[ASan] Support {f}puts(NULL) on Darwin, part 2

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Add braces around macro `{ MACRO(); }` to guard against macros that
expand to multiple statements.

llvm-svn: 366488
This commit is contained in:
Julian Lettner
2019-07-18 20:14:50 +00:00
parent 468f34d75f
commit be7a7ae0c3
1 changed files with 4 additions and 2 deletions
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6
compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
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@@ -1241,8 +1241,9 @@ INTERCEPTOR_WITH_SUFFIX(int, fputs, char *s, void *file) {
// libc file streams can call user-supplied functions, see fopencookie.
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, fputs, s, file);
if (!SANITIZER_MAC || s)
if (!SANITIZER_MAC || s) { // `fputs(NULL, file)` is supported on Darwin.
COMMON_INTERCEPTOR_READ_RANGE(ctx, s, REAL(strlen)(s) + 1);
}
return REAL(fputs)(s, file);
}
#define INIT_FPUTS COMMON_INTERCEPT_FUNCTION(fputs)
@@ -1255,8 +1256,9 @@ INTERCEPTOR(int, puts, char *s) {
// libc file streams can call user-supplied functions, see fopencookie.
void *ctx;
COMMON_INTERCEPTOR_ENTER(ctx, puts, s);
if (!SANITIZER_MAC || s)
if (!SANITIZER_MAC || s) { // `puts(NULL)` is supported on Darwin.
COMMON_INTERCEPTOR_READ_RANGE(ctx, s, REAL(strlen)(s) + 1);
}
return REAL(puts)(s);
}
#define INIT_PUTS COMMON_INTERCEPT_FUNCTION(puts)