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536456a7e9
Summary: Both EOF and the max value of unsigned char is platform dependent. In this patch we try our best to deduce the value of EOF from the Preprocessor, if we can't we fall back to -1. Reviewers: Szelethus, NoQ Subscribers: whisperity, xazax.hun, kristof.beyls, baloghadamsoftware, szepet, rnkovacs, a.sidorin, mikhail.ramalh Tags: #clang Differential Revision: https://reviews.llvm.org/D74473
27 lines
1.3 KiB
C
27 lines
1.3 KiB
C
// RUN: %clang_analyze_cc1 -analyzer-checker=core,apiModeling.StdCLibraryFunctions,debug.ExprInspection -verify -analyzer-config eagerly-assume=false %s
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// RUN: %clang_analyze_cc1 -triple i686-unknown-linux -analyzer-checker=core,apiModeling.StdCLibraryFunctions,debug.ExprInspection -verify -analyzer-config eagerly-assume=false %s
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// RUN: %clang_analyze_cc1 -triple x86_64-unknown-linux -analyzer-checker=core,apiModeling.StdCLibraryFunctions,debug.ExprInspection -verify -analyzer-config eagerly-assume=false %s
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// RUN: %clang_analyze_cc1 -triple armv7-a15-linux -analyzer-checker=core,apiModeling.StdCLibraryFunctions,debug.ExprInspection -verify -analyzer-config eagerly-assume=false %s
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// RUN: %clang_analyze_cc1 -triple thumbv7-a15-linux -analyzer-checker=core,apiModeling.StdCLibraryFunctions,debug.ExprInspection -verify -analyzer-config eagerly-assume=false %s
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void clang_analyzer_eval(int);
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typedef struct FILE FILE;
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// Unorthodox EOF value.
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#define EOF (-2)
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int getc(FILE *);
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void test_getc(FILE *fp) {
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int x;
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while ((x = getc(fp)) != EOF) {
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clang_analyzer_eval(x > 255); // expected-warning{{FALSE}}
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clang_analyzer_eval(x >= 0); // expected-warning{{TRUE}}
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}
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int y = getc(fp);
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if (y < 0) {
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clang_analyzer_eval(y == -2); // expected-warning{{TRUE}}
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}
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}
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