forked from OSchip/llvm-project
149 lines
6.3 KiB
C
149 lines
6.3 KiB
C
// RUN: %check_clang_tidy %s android-comparison-in-temp-failure-retry %t
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#define TEMP_FAILURE_RETRY(x) \
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({ \
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typeof(x) __z; \
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do \
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__z = (x); \
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while (__z == -1); \
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__z; \
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})
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int foo();
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int bar(int a);
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void test() {
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int i;
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TEMP_FAILURE_RETRY((i = foo()));
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TEMP_FAILURE_RETRY(foo());
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TEMP_FAILURE_RETRY((foo()));
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TEMP_FAILURE_RETRY(foo() == 1);
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// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: top-level comparison in TEMP_FAILURE_RETRY [android-comparison-in-temp-failure-retry]
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TEMP_FAILURE_RETRY((foo() == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:29: warning: top-level comparison in TEMP_FAILURE_RETRY
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TEMP_FAILURE_RETRY((int)(foo() == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:34: warning: top-level comparison in TEMP_FAILURE_RETRY
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TEMP_FAILURE_RETRY(bar(foo() == 1));
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TEMP_FAILURE_RETRY((bar(foo() == 1)));
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TEMP_FAILURE_RETRY((bar(foo() == 1)) == 1);
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// CHECK-MESSAGES: :[[@LINE-1]]:40: warning: top-level comparison in TEMP_FAILURE_RETRY
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TEMP_FAILURE_RETRY(((bar(foo() == 1)) == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:41: warning: top-level comparison in TEMP_FAILURE_RETRY
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TEMP_FAILURE_RETRY((int)((bar(foo() == 1)) == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:46: warning: top-level comparison in TEMP_FAILURE_RETRY
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#define INDIRECT TEMP_FAILURE_RETRY
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INDIRECT(foo());
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INDIRECT((foo() == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:19: warning: top-level comparison in TEMP_FAILURE_RETRY
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INDIRECT(bar(foo() == 1));
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INDIRECT((int)((bar(foo() == 1)) == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:36: warning: top-level comparison in TEMP_FAILURE_RETRY
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#define TFR(x) TEMP_FAILURE_RETRY(x)
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TFR(foo());
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TFR((foo() == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:14: warning: top-level comparison in TEMP_FAILURE_RETRY
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TFR(bar(foo() == 1));
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TFR((int)((bar(foo() == 1)) == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:31: warning: top-level comparison in TEMP_FAILURE_RETRY
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#define ADD_TFR(x) (1 + TEMP_FAILURE_RETRY(x) + 1)
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ADD_TFR(foo());
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ADD_TFR(foo() == 1);
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// CHECK-MESSAGES: :[[@LINE-1]]:17: warning: top-level comparison in TEMP_FAILURE_RETRY
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ADD_TFR(bar(foo() == 1));
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ADD_TFR((int)((bar(foo() == 1)) == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:35: warning: top-level comparison in TEMP_FAILURE_RETRY
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#define ADDP_TFR(x) (1 + TEMP_FAILURE_RETRY((x)) + 1)
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ADDP_TFR(foo());
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ADDP_TFR((foo() == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:19: warning: top-level comparison in TEMP_FAILURE_RETRY
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ADDP_TFR(bar(foo() == 1));
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ADDP_TFR((int)((bar(foo() == 1)) == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:36: warning: top-level comparison in TEMP_FAILURE_RETRY
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#define MACRO TEMP_FAILURE_RETRY(foo() == 1)
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MACRO;
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: top-level comparison in TEMP_FAILURE_RETRY
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// Be sure that being a macro arg doesn't mess with this.
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#define ID(x) (x)
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ID(ADDP_TFR(bar(foo() == 1)));
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ID(ADDP_TFR(bar(foo() == 1) == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:31: warning: top-level comparison in TEMP_FAILURE_RETRY
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ID(MACRO);
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// CHECK-MESSAGES: :[[@LINE-1]]:6: warning: top-level comparison in TEMP_FAILURE_RETRY
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#define CMP(x) x == 1
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TEMP_FAILURE_RETRY(CMP(foo()));
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// CHECK-MESSAGES: :[[@LINE-1]]:22: warning: top-level comparison in TEMP_FAILURE_RETRY
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}
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// Be sure that it works inside of things like loops, if statements, etc.
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void control_flow() {
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do {
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if (TEMP_FAILURE_RETRY(foo())) {
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}
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if (TEMP_FAILURE_RETRY(foo() == 1)) {
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// CHECK-MESSAGES: :[[@LINE-1]]:34: warning: top-level comparison in TEMP_FAILURE_RETRY
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}
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if (TEMP_FAILURE_RETRY(bar(foo() == 1))) {
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}
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if (TEMP_FAILURE_RETRY(bar(foo() == 1) == 1)) {
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// CHECK-MESSAGES: :[[@LINE-1]]:44: warning: top-level comparison in TEMP_FAILURE_RETRY
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}
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} while (TEMP_FAILURE_RETRY(foo() == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:37: warning: top-level comparison in TEMP_FAILURE_RETRY
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}
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void with_nondependent_variable_type() {
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#undef TEMP_FAILURE_RETRY
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#define TEMP_FAILURE_RETRY(x) \
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({ \
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long int __z; \
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do \
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__z = (x); \
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while (__z == -1); \
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__z; \
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})
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TEMP_FAILURE_RETRY((foo()));
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TEMP_FAILURE_RETRY((int)(foo() == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:34: warning: top-level comparison in TEMP_FAILURE_RETRY
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TEMP_FAILURE_RETRY((bar(foo() == 1)));
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TEMP_FAILURE_RETRY((int)((bar(foo() == 1)) == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:46: warning: top-level comparison in TEMP_FAILURE_RETRY
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}
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// I can't find a case where TEMP_FAILURE_RETRY is implemented like this, but if
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// we can cheaply support it, I don't see why not.
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void obscured_temp_failure_retry() {
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#undef TEMP_FAILURE_RETRY
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#define IMPL(x) \
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({ \
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typeof(x) __z; \
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do \
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__z = (x); \
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while (__z == -1); \
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__z; \
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})
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#define IMPL2(x) IMPL(x)
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#define TEMP_FAILURE_RETRY(x) IMPL2(x)
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TEMP_FAILURE_RETRY((foo()));
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TEMP_FAILURE_RETRY((int)(foo() == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:34: warning: top-level comparison in TEMP_FAILURE_RETRY
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TEMP_FAILURE_RETRY((bar(foo() == 1)));
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TEMP_FAILURE_RETRY((int)((bar(foo() == 1)) == 1));
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// CHECK-MESSAGES: :[[@LINE-1]]:46: warning: top-level comparison in TEMP_FAILURE_RETRY
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}
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